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 #include <linux/types.h>
  19 #include <asm/byteorder.h>
  20
  21 /*
  22  * DS bit usage
  23  *
  24  * TA = transmitter address
  25  * RA = receiver address
  26  * DA = destination address
  27  * SA = source address
  28  *
  29  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  30  * -----------------------------------------------------------------
  31  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  32  *  0       1       DA      BSSID   SA      -       AP -> STA
  33  *  1       0       BSSID   SA      DA      -       AP <- STA
  34  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  35  */
  36
  37 #define FCS_LEN 4
  38
  39 #define IEEE80211_FCTL_VERS             0x0003
  40 #define IEEE80211_FCTL_FTYPE            0x000c
  41 #define IEEE80211_FCTL_STYPE            0x00f0
  42 #define IEEE80211_FCTL_TODS             0x0100
  43 #define IEEE80211_FCTL_FROMDS           0x0200
  44 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  45 #define IEEE80211_FCTL_RETRY            0x0800
  46 #define IEEE80211_FCTL_PM               0x1000
  47 #define IEEE80211_FCTL_MOREDATA         0x2000
  48 #define IEEE80211_FCTL_PROTECTED        0x4000
  49 #define IEEE80211_FCTL_ORDER            0x8000
  50
  51 #define IEEE80211_SCTL_FRAG             0x000F
  52 #define IEEE80211_SCTL_SEQ              0xFFF0
  53
  54 #define IEEE80211_FTYPE_MGMT            0x0000
  55 #define IEEE80211_FTYPE_CTL             0x0004
  56 #define IEEE80211_FTYPE_DATA            0x0008
  57
  58 /* management */
  59 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  60 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  61 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  62 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  63 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  64 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  65 #define IEEE80211_STYPE_BEACON          0x0080
  66 #define IEEE80211_STYPE_ATIM            0x0090
  67 #define IEEE80211_STYPE_DISASSOC        0x00A0
  68 #define IEEE80211_STYPE_AUTH            0x00B0
  69 #define IEEE80211_STYPE_DEAUTH          0x00C0
  70 #define IEEE80211_STYPE_ACTION          0x00D0
  71
  72 /* control */
  73 #define IEEE80211_STYPE_BACK_REQ        0x0080
  74 #define IEEE80211_STYPE_BACK            0x0090
  75 #define IEEE80211_STYPE_PSPOLL          0x00A0
  76 #define IEEE80211_STYPE_RTS             0x00B0
  77 #define IEEE80211_STYPE_CTS             0x00C0
  78 #define IEEE80211_STYPE_ACK             0x00D0
  79 #define IEEE80211_STYPE_CFEND           0x00E0
  80 #define IEEE80211_STYPE_CFENDACK        0x00F0
  81
  82 /* data */
  83 #define IEEE80211_STYPE_DATA                    0x0000
  84 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  85 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  86 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  87 #define IEEE80211_STYPE_NULLFUNC                0x0040
  88 #define IEEE80211_STYPE_CFACK                   0x0050
  89 #define IEEE80211_STYPE_CFPOLL                  0x0060
  90 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  91 #define IEEE80211_STYPE_QOS_DATA                0x0080
  92 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  95 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  96 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  97 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  98 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  99
 100
 101 /* miscellaneous IEEE 802.11 constants */
 102 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 103 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 104 #define IEEE80211_MAX_AID               2007
 105 #define IEEE80211_MAX_TIM_LEN           251
 106 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 107    6.2.1.1.2.
 108
 109    802.11e clarifies the figure in section 7.1.2. The frame body is
 110    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 111 #define IEEE80211_MAX_DATA_LEN          2304
 112 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 113 #define IEEE80211_MAX_FRAME_LEN         2352
 114
 115 #define IEEE80211_MAX_SSID_LEN          32
 116
 117 #define IEEE80211_MAX_MESH_ID_LEN       32
 118
 119 #define IEEE80211_QOS_CTL_LEN           2
 120 /* 1d tag mask */
 121 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 122 /* TID mask */
 123 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 124 /* EOSP */
 125 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 126 /* ACK policy */
 127 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 128 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 129 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 130 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 131 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 132 /* A-MSDU 802.11n */
 133 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 134 /* Mesh Control 802.11s */
 135 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 136
 137 /* U-APSD queue for WMM IEs sent by AP */
 138 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 139 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 140
 141 /* U-APSD queues for WMM IEs sent by STA */
 142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 144 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 145 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 146 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 147
 148 /* U-APSD max SP length for WMM IEs sent by STA */
 149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 152 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 153 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 154 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 155
 156 #define IEEE80211_HT_CTL_LEN            4
 157
 158 struct ieee80211_hdr {
 159         __le16 frame_control;
 160         __le16 duration_id;
 161         u8 addr1[6];
 162         u8 addr2[6];
 163         u8 addr3[6];
 164         __le16 seq_ctrl;
 165         u8 addr4[6];
 166 } __attribute__ ((packed));
 167
 168 struct ieee80211_hdr_3addr {
 169         __le16 frame_control;
 170         __le16 duration_id;
 171         u8 addr1[6];
 172         u8 addr2[6];
 173         u8 addr3[6];
 174         __le16 seq_ctrl;
 175 } __attribute__ ((packed));
 176
 177 struct ieee80211_qos_hdr {
 178         __le16 frame_control;
 179         __le16 duration_id;
 180         u8 addr1[6];
 181         u8 addr2[6];
 182         u8 addr3[6];
 183         __le16 seq_ctrl;
 184         __le16 qos_ctrl;
 185 } __attribute__ ((packed));
 186
 187 /**
 188  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 189  * @fc: frame control bytes in little-endian byteorder
 190  */
 191 static inline int ieee80211_has_tods(__le16 fc)
 192 {
 193         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 194 }
 195
 196 /**
 197  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 198  * @fc: frame control bytes in little-endian byteorder
 199  */
 200 static inline int ieee80211_has_fromds(__le16 fc)
 201 {
 202         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 203 }
 204
 205 /**
 206  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 207  * @fc: frame control bytes in little-endian byteorder
 208  */
 209 static inline int ieee80211_has_a4(__le16 fc)
 210 {
 211         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 212         return (fc & tmp) == tmp;
 213 }
 214
 215 /**
 216  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 217  * @fc: frame control bytes in little-endian byteorder
 218  */
 219 static inline int ieee80211_has_morefrags(__le16 fc)
 220 {
 221         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 222 }
 223
 224 /**
 225  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 226  * @fc: frame control bytes in little-endian byteorder
 227  */
 228 static inline int ieee80211_has_retry(__le16 fc)
 229 {
 230         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 231 }
 232
 233 /**
 234  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 235  * @fc: frame control bytes in little-endian byteorder
 236  */
 237 static inline int ieee80211_has_pm(__le16 fc)
 238 {
 239         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 240 }
 241
 242 /**
 243  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 244  * @fc: frame control bytes in little-endian byteorder
 245  */
 246 static inline int ieee80211_has_moredata(__le16 fc)
 247 {
 248         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 249 }
 250
 251 /**
 252  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 253  * @fc: frame control bytes in little-endian byteorder
 254  */
 255 static inline int ieee80211_has_protected(__le16 fc)
 256 {
 257         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 258 }
 259
 260 /**
 261  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 262  * @fc: frame control bytes in little-endian byteorder
 263  */
 264 static inline int ieee80211_has_order(__le16 fc)
 265 {
 266         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 267 }
 268
 269 /**
 270  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 271  * @fc: frame control bytes in little-endian byteorder
 272  */
 273 static inline int ieee80211_is_mgmt(__le16 fc)
 274 {
 275         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 276                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 277 }
 278
 279 /**
 280  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 281  * @fc: frame control bytes in little-endian byteorder
 282  */
 283 static inline int ieee80211_is_ctl(__le16 fc)
 284 {
 285         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 286                cpu_to_le16(IEEE80211_FTYPE_CTL);
 287 }
 288
 289 /**
 290  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 291  * @fc: frame control bytes in little-endian byteorder
 292  */
 293 static inline int ieee80211_is_data(__le16 fc)
 294 {
 295         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 296                cpu_to_le16(IEEE80211_FTYPE_DATA);
 297 }
 298
 299 /**
 300  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 301  * @fc: frame control bytes in little-endian byteorder
 302  */
 303 static inline int ieee80211_is_data_qos(__le16 fc)
 304 {
 305         /*
 306          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 307          * to check the one bit
 308          */
 309         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 310                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 311 }
 312
 313 /**
 314  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 315  * @fc: frame control bytes in little-endian byteorder
 316  */
 317 static inline int ieee80211_is_data_present(__le16 fc)
 318 {
 319         /*
 320          * mask with 0x40 and test that that bit is clear to only return true
 321          * for the data-containing substypes.
 322          */
 323         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 324                cpu_to_le16(IEEE80211_FTYPE_DATA);
 325 }
 326
 327 /**
 328  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 329  * @fc: frame control bytes in little-endian byteorder
 330  */
 331 static inline int ieee80211_is_assoc_req(__le16 fc)
 332 {
 333         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 334                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 335 }
 336
 337 /**
 338  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 339  * @fc: frame control bytes in little-endian byteorder
 340  */
 341 static inline int ieee80211_is_assoc_resp(__le16 fc)
 342 {
 343         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 344                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 345 }
 346
 347 /**
 348  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 349  * @fc: frame control bytes in little-endian byteorder
 350  */
 351 static inline int ieee80211_is_reassoc_req(__le16 fc)
 352 {
 353         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 354                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 355 }
 356
 357 /**
 358  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 359  * @fc: frame control bytes in little-endian byteorder
 360  */
 361 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 362 {
 363         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 364                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 365 }
 366
 367 /**
 368  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 369  * @fc: frame control bytes in little-endian byteorder
 370  */
 371 static inline int ieee80211_is_probe_req(__le16 fc)
 372 {
 373         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 374                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 375 }
 376
 377 /**
 378  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 379  * @fc: frame control bytes in little-endian byteorder
 380  */
 381 static inline int ieee80211_is_probe_resp(__le16 fc)
 382 {
 383         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 384                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 385 }
 386
 387 /**
 388  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 389  * @fc: frame control bytes in little-endian byteorder
 390  */
 391 static inline int ieee80211_is_beacon(__le16 fc)
 392 {
 393         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 394                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 395 }
 396
 397 /**
 398  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 399  * @fc: frame control bytes in little-endian byteorder
 400  */
 401 static inline int ieee80211_is_atim(__le16 fc)
 402 {
 403         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 404                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 405 }
 406
 407 /**
 408  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 409  * @fc: frame control bytes in little-endian byteorder
 410  */
 411 static inline int ieee80211_is_disassoc(__le16 fc)
 412 {
 413         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 414                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 415 }
 416
 417 /**
 418  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 419  * @fc: frame control bytes in little-endian byteorder
 420  */
 421 static inline int ieee80211_is_auth(__le16 fc)
 422 {
 423         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 424                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 425 }
 426
 427 /**
 428  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 429  * @fc: frame control bytes in little-endian byteorder
 430  */
 431 static inline int ieee80211_is_deauth(__le16 fc)
 432 {
 433         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 434                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 435 }
 436
 437 /**
 438  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 439  * @fc: frame control bytes in little-endian byteorder
 440  */
 441 static inline int ieee80211_is_action(__le16 fc)
 442 {
 443         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 444                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 445 }
 446
 447 /**
 448  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 449  * @fc: frame control bytes in little-endian byteorder
 450  */
 451 static inline int ieee80211_is_back_req(__le16 fc)
 452 {
 453         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 454                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 455 }
 456
 457 /**
 458  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 459  * @fc: frame control bytes in little-endian byteorder
 460  */
 461 static inline int ieee80211_is_back(__le16 fc)
 462 {
 463         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 464                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 465 }
 466
 467 /**
 468  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 469  * @fc: frame control bytes in little-endian byteorder
 470  */
 471 static inline int ieee80211_is_pspoll(__le16 fc)
 472 {
 473         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 474                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 475 }
 476
 477 /**
 478  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 479  * @fc: frame control bytes in little-endian byteorder
 480  */
 481 static inline int ieee80211_is_rts(__le16 fc)
 482 {
 483         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 484                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 485 }
 486
 487 /**
 488  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 489  * @fc: frame control bytes in little-endian byteorder
 490  */
 491 static inline int ieee80211_is_cts(__le16 fc)
 492 {
 493         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 494                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 495 }
 496
 497 /**
 498  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 499  * @fc: frame control bytes in little-endian byteorder
 500  */
 501 static inline int ieee80211_is_ack(__le16 fc)
 502 {
 503         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 504                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 505 }
 506
 507 /**
 508  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 509  * @fc: frame control bytes in little-endian byteorder
 510  */
 511 static inline int ieee80211_is_cfend(__le16 fc)
 512 {
 513         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 514                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 515 }
 516
 517 /**
 518  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 519  * @fc: frame control bytes in little-endian byteorder
 520  */
 521 static inline int ieee80211_is_cfendack(__le16 fc)
 522 {
 523         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 524                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 525 }
 526
 527 /**
 528  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 529  * @fc: frame control bytes in little-endian byteorder
 530  */
 531 static inline int ieee80211_is_nullfunc(__le16 fc)
 532 {
 533         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 534                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 535 }
 536
 537 /**
 538  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 539  * @fc: frame control bytes in little-endian byteorder
 540  */
 541 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 542 {
 543         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 544                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 545 }
 546
 547 struct ieee80211s_hdr {
 548         u8 flags;
 549         u8 ttl;
 550         __le32 seqnum;
 551         u8 eaddr1[6];
 552         u8 eaddr2[6];
 553 } __attribute__ ((packed));
 554
 555 /* Mesh flags */
 556 #define MESH_FLAGS_AE_A4        0x1
 557 #define MESH_FLAGS_AE_A5_A6     0x2
 558 #define MESH_FLAGS_AE           0x3
 559 #define MESH_FLAGS_PS_DEEP      0x4
 560
 561 /**
 562  * struct ieee80211_quiet_ie
 563  *
 564  * This structure refers to "Quiet information element"
 565  */
 566 struct ieee80211_quiet_ie {
 567         u8 count;
 568         u8 period;
 569         __le16 duration;
 570         __le16 offset;
 571 } __attribute__ ((packed));
 572
 573 /**
 574  * struct ieee80211_msrment_ie
 575  *
 576  * This structure refers to "Measurement Request/Report information element"
 577  */
 578 struct ieee80211_msrment_ie {
 579         u8 token;
 580         u8 mode;
 581         u8 type;
 582         u8 request[0];
 583 } __attribute__ ((packed));
 584
 585 /**
 586  * struct ieee80211_channel_sw_ie
 587  *
 588  * This structure refers to "Channel Switch Announcement information element"
 589  */
 590 struct ieee80211_channel_sw_ie {
 591         u8 mode;
 592         u8 new_ch_num;
 593         u8 count;
 594 } __attribute__ ((packed));
 595
 596 /**
 597  * struct ieee80211_tim
 598  *
 599  * This structure refers to "Traffic Indication Map information element"
 600  */
 601 struct ieee80211_tim_ie {
 602         u8 dtim_count;
 603         u8 dtim_period;
 604         u8 bitmap_ctrl;
 605         /* variable size: 1 - 251 bytes */
 606         u8 virtual_map[1];
 607 } __attribute__ ((packed));
 608
 609 /**
 610  * struct ieee80211_meshconf_ie
 611  *
 612  * This structure refers to "Mesh Configuration information element"
 613  */
 614 struct ieee80211_meshconf_ie {
 615         u8 meshconf_psel;
 616         u8 meshconf_pmetric;
 617         u8 meshconf_congest;
 618         u8 meshconf_synch;
 619         u8 meshconf_auth;
 620         u8 meshconf_form;
 621         u8 meshconf_cap;
 622 } __attribute__ ((packed));
 623
 624 /**
 625  * struct ieee80211_rann_ie
 626  *
 627  * This structure refers to "Root Announcement information element"
 628  */
 629 struct ieee80211_rann_ie {
 630         u8 rann_flags;
 631         u8 rann_hopcount;
 632         u8 rann_ttl;
 633         u8 rann_addr[6];
 634         u32 rann_seq;
 635         u32 rann_interval;
 636         u32 rann_metric;
 637 } __attribute__ ((packed));
 638
 639 enum ieee80211_rann_flags {
 640         RANN_FLAG_IS_GATE = 1 << 0,
 641 };
 642
 643 #define WLAN_SA_QUERY_TR_ID_LEN 2
 644
 645 struct ieee80211_mgmt {
 646         __le16 frame_control;
 647         __le16 duration;
 648         u8 da[6];
 649         u8 sa[6];
 650         u8 bssid[6];
 651         __le16 seq_ctrl;
 652         union {
 653                 struct {
 654                         __le16 auth_alg;
 655                         __le16 auth_transaction;
 656                         __le16 status_code;
 657                         /* possibly followed by Challenge text */
 658                         u8 variable[0];
 659                 } __attribute__ ((packed)) auth;
 660                 struct {
 661                         __le16 reason_code;
 662                 } __attribute__ ((packed)) deauth;
 663                 struct {
 664                         __le16 capab_info;
 665                         __le16 listen_interval;
 666                         /* followed by SSID and Supported rates */
 667                         u8 variable[0];
 668                 } __attribute__ ((packed)) assoc_req;
 669                 struct {
 670                         __le16 capab_info;
 671                         __le16 status_code;
 672                         __le16 aid;
 673                         /* followed by Supported rates */
 674                         u8 variable[0];
 675                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 676                 struct {
 677                         __le16 capab_info;
 678                         __le16 listen_interval;
 679                         u8 current_ap[6];
 680                         /* followed by SSID and Supported rates */
 681                         u8 variable[0];
 682                 } __attribute__ ((packed)) reassoc_req;
 683                 struct {
 684                         __le16 reason_code;
 685                 } __attribute__ ((packed)) disassoc;
 686                 struct {
 687                         __le64 timestamp;
 688                         __le16 beacon_int;
 689                         __le16 capab_info;
 690                         /* followed by some of SSID, Supported rates,
 691                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 692                         u8 variable[0];
 693                 } __attribute__ ((packed)) beacon;
 694                 struct {
 695                         /* only variable items: SSID, Supported rates */
 696                         u8 variable[0];
 697                 } __attribute__ ((packed)) probe_req;
 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 */
 704                         u8 variable[0];
 705                 } __attribute__ ((packed)) probe_resp;
 706                 struct {
 707                         u8 category;
 708                         union {
 709                                 struct {
 710                                         u8 action_code;
 711                                         u8 dialog_token;
 712                                         u8 status_code;
 713                                         u8 variable[0];
 714                                 } __attribute__ ((packed)) wme_action;
 715                                 struct{
 716                                         u8 action_code;
 717                                         u8 element_id;
 718                                         u8 length;
 719                                         struct ieee80211_channel_sw_ie sw_elem;
 720                                 } __attribute__((packed)) chan_switch;
 721                                 struct{
 722                                         u8 action_code;
 723                                         u8 dialog_token;
 724                                         u8 element_id;
 725                                         u8 length;
 726                                         struct ieee80211_msrment_ie msr_elem;
 727                                 } __attribute__((packed)) measurement;
 728                                 struct{
 729                                         u8 action_code;
 730                                         u8 dialog_token;
 731                                         __le16 capab;
 732                                         __le16 timeout;
 733                                         __le16 start_seq_num;
 734                                 } __attribute__((packed)) addba_req;
 735                                 struct{
 736                                         u8 action_code;
 737                                         u8 dialog_token;
 738                                         __le16 status;
 739                                         __le16 capab;
 740                                         __le16 timeout;
 741                                 } __attribute__((packed)) addba_resp;
 742                                 struct{
 743                                         u8 action_code;
 744                                         __le16 params;
 745                                         __le16 reason_code;
 746                                 } __attribute__((packed)) delba;
 747                                 struct {
 748                                         u8 action_code;
 749                                         u8 variable[0];
 750                                 } __attribute__((packed)) self_prot;
 751                                 struct{
 752                                         u8 action_code;
 753                                         u8 variable[0];
 754                                 } __attribute__((packed)) mesh_action;
 755                                 struct {
 756                                         u8 action;
 757                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 758                                 } __attribute__ ((packed)) sa_query;
 759                                 struct {
 760                                         u8 action;
 761                                         u8 smps_control;
 762                                 } __attribute__ ((packed)) ht_smps;
 763                                 struct {
 764                                         u8 action_code;
 765                                         u8 dialog_token;
 766                                         __le16 capability;
 767                                         u8 variable[0];
 768                                 } __packed tdls_discover_resp;
 769                         } u;
 770                 } __attribute__ ((packed)) action;
 771         } u;
 772 } __attribute__ ((packed));
 773
 774 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 775 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 776
 777 /* mgmt header + 1 byte category code */
 778 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 779
 780
 781 /* Management MIC information element (IEEE 802.11w) */
 782 struct ieee80211_mmie {
 783         u8 element_id;
 784         u8 length;
 785         __le16 key_id;
 786         u8 sequence_number[6];
 787         u8 mic[8];
 788 } __attribute__ ((packed));
 789
 790 struct ieee80211_vendor_ie {
 791         u8 element_id;
 792         u8 len;
 793         u8 oui[3];
 794         u8 oui_type;
 795 } __packed;
 796
 797 /* Control frames */
 798 struct ieee80211_rts {
 799         __le16 frame_control;
 800         __le16 duration;
 801         u8 ra[6];
 802         u8 ta[6];
 803 } __attribute__ ((packed));
 804
 805 struct ieee80211_cts {
 806         __le16 frame_control;
 807         __le16 duration;
 808         u8 ra[6];
 809 } __attribute__ ((packed));
 810
 811 struct ieee80211_pspoll {
 812         __le16 frame_control;
 813         __le16 aid;
 814         u8 bssid[6];
 815         u8 ta[6];
 816 } __attribute__ ((packed));
 817
 818 /* TDLS */
 819
 820 /* Link-id information element */
 821 struct ieee80211_tdls_lnkie {
 822         u8 ie_type; /* Link Identifier IE */
 823         u8 ie_len;
 824         u8 bssid[6];
 825         u8 init_sta[6];
 826         u8 resp_sta[6];
 827 } __packed;
 828
 829 struct ieee80211_tdls_data {
 830         u8 da[6];
 831         u8 sa[6];
 832         __be16 ether_type;
 833         u8 payload_type;
 834         u8 category;
 835         u8 action_code;
 836         union {
 837                 struct {
 838                         u8 dialog_token;
 839                         __le16 capability;
 840                         u8 variable[0];
 841                 } __packed setup_req;
 842                 struct {
 843                         __le16 status_code;
 844                         u8 dialog_token;
 845                         __le16 capability;
 846                         u8 variable[0];
 847                 } __packed setup_resp;
 848                 struct {
 849                         __le16 status_code;
 850                         u8 dialog_token;
 851                         u8 variable[0];
 852                 } __packed setup_cfm;
 853                 struct {
 854                         __le16 reason_code;
 855                         u8 variable[0];
 856                 } __packed teardown;
 857                 struct {
 858                         u8 dialog_token;
 859                         u8 variable[0];
 860                 } __packed discover_req;
 861         } u;
 862 } __packed;
 863
 864 /**
 865  * struct ieee80211_bar - HT Block Ack Request
 866  *
 867  * This structure refers to "HT BlockAckReq" as
 868  * described in 802.11n draft section 7.2.1.7.1
 869  */
 870 struct ieee80211_bar {
 871         __le16 frame_control;
 872         __le16 duration;
 873         __u8 ra[6];
 874         __u8 ta[6];
 875         __le16 control;
 876         __le16 start_seq_num;
 877 } __attribute__((packed));
 878
 879 /* 802.11 BAR control masks */
 880 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 881 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 882 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 883 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 884 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 885
 886 #define IEEE80211_HT_MCS_MASK_LEN               10
 887
 888 /**
 889  * struct ieee80211_mcs_info - MCS information
 890  * @rx_mask: RX mask
 891  * @rx_highest: highest supported RX rate. If set represents
 892  *      the highest supported RX data rate in units of 1 Mbps.
 893  *      If this field is 0 this value should not be used to
 894  *      consider the highest RX data rate supported.
 895  * @tx_params: TX parameters
 896  */
 897 struct ieee80211_mcs_info {
 898         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 899         __le16 rx_highest;
 900         u8 tx_params;
 901         u8 reserved[3];
 902 } __attribute__((packed));
 903
 904 /* 802.11n HT capability MSC set */
 905 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 906 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 907 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 908 /* value 0 == 1 stream etc */
 909 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 910 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 911 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 912 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 913
 914 /*
 915  * 802.11n D5.0 20.3.5 / 20.6 says:
 916  * - indices 0 to 7 and 32 are single spatial stream
 917  * - 8 to 31 are multiple spatial streams using equal modulation
 918  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 919  * - remainder are multiple spatial streams using unequal modulation
 920  */
 921 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 922 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 923         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 924
 925 /**
 926  * struct ieee80211_ht_cap - HT capabilities
 927  *
 928  * This structure is the "HT capabilities element" as
 929  * described in 802.11n D5.0 7.3.2.57
 930  */
 931 struct ieee80211_ht_cap {
 932         __le16 cap_info;
 933         u8 ampdu_params_info;
 934
 935         /* 16 bytes MCS information */
 936         struct ieee80211_mcs_info mcs;
 937
 938         __le16 extended_ht_cap_info;
 939         __le32 tx_BF_cap_info;
 940         u8 antenna_selection_info;
 941 } __attribute__ ((packed));
 942
 943 /* 802.11n HT capabilities masks (for cap_info) */
 944 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 945 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 946 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 947 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 948 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 949 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 950 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 951 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 952 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 953 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 954 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 955 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 956 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 957 #define IEEE80211_HT_CAP_RESERVED               0x2000
 958 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 959 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 960
 961 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 962 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 963 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 964 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 965 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 966 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 967 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 968 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 969
 970 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 971 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 972 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 973 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 974
 975 /*
 976  * Maximum length of AMPDU that the STA can receive.
 977  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 978  */
 979 enum ieee80211_max_ampdu_length_exp {
 980         IEEE80211_HT_MAX_AMPDU_8K = 0,
 981         IEEE80211_HT_MAX_AMPDU_16K = 1,
 982         IEEE80211_HT_MAX_AMPDU_32K = 2,
 983         IEEE80211_HT_MAX_AMPDU_64K = 3
 984 };
 985
 986 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 987
 988 /* Minimum MPDU start spacing */
 989 enum ieee80211_min_mpdu_spacing {
 990         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 991         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 992         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 993         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 994         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 995         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 996         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 997         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 998 };
 999
1000 /**
1001  * struct ieee80211_ht_info - HT information
1002  *
1003  * This structure is the "HT information element" as
1004  * described in 802.11n D5.0 7.3.2.58
1005  */
1006 struct ieee80211_ht_info {
1007         u8 control_chan;
1008         u8 ht_param;
1009         __le16 operation_mode;
1010         __le16 stbc_param;
1011         u8 basic_set[16];
1012 } __attribute__ ((packed));
1013
1014 /* for ht_param */
1015 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1016 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1017 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1018 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1019 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1020 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1021 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
1022 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
1023
1024 /* for operation_mode */
1025 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1026 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1027 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1028 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1029 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1030 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1031 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1032
1033 /* for stbc_param */
1034 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1035 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1036 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1037 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1038 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1039 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1040
1041
1042 /* block-ack parameters */
1043 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1044 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1045 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1046 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1047 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1048
1049 /*
1050  * A-PMDU buffer sizes
1051  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1052  */
1053 #define IEEE80211_MIN_AMPDU_BUF 0x8
1054 #define IEEE80211_MAX_AMPDU_BUF 0x40
1055
1056
1057 /* Spatial Multiplexing Power Save Modes (for capability) */
1058 #define WLAN_HT_CAP_SM_PS_STATIC        0
1059 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1060 #define WLAN_HT_CAP_SM_PS_INVALID       2
1061 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1062
1063 /* for SM power control field lower two bits */
1064 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1065 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1066 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1067
1068 /* Authentication algorithms */
1069 #define WLAN_AUTH_OPEN 0
1070 #define WLAN_AUTH_SHARED_KEY 1
1071 #define WLAN_AUTH_FT 2
1072 #define WLAN_AUTH_SAE 3
1073 #define WLAN_AUTH_LEAP 128
1074
1075 #define WLAN_AUTH_CHALLENGE_LEN 128
1076
1077 #define WLAN_CAPABILITY_ESS             (1<<0)
1078 #define WLAN_CAPABILITY_IBSS            (1<<1)
1079
1080 /*
1081  * A mesh STA sets the ESS and IBSS capability bits to zero.
1082  * however, this holds true for p2p probe responses (in the p2p_find
1083  * phase) as well.
1084  */
1085 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1086         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1087
1088 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1089 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1090 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1091 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1092 #define WLAN_CAPABILITY_PBCC            (1<<6)
1093 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1094
1095 /* 802.11h */
1096 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1097 #define WLAN_CAPABILITY_QOS             (1<<9)
1098 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1099 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1100 /* measurement */
1101 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1102 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1103 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1104
1105 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1106 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1107 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1108
1109
1110 /* 802.11g ERP information element */
1111 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1112 #define WLAN_ERP_USE_PROTECTION (1<<1)
1113 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1114
1115 /* WLAN_ERP_BARKER_PREAMBLE values */
1116 enum {
1117         WLAN_ERP_PREAMBLE_SHORT = 0,
1118         WLAN_ERP_PREAMBLE_LONG = 1,
1119 };
1120
1121 /* Status codes */
1122 enum ieee80211_statuscode {
1123         WLAN_STATUS_SUCCESS = 0,
1124         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1125         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1126         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1127         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1128         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1129         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1130         WLAN_STATUS_CHALLENGE_FAIL = 15,
1131         WLAN_STATUS_AUTH_TIMEOUT = 16,
1132         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1133         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1134         /* 802.11b */
1135         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1136         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1137         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1138         /* 802.11h */
1139         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1140         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1141         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1142         /* 802.11g */
1143         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1144         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1145         /* 802.11w */
1146         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1147         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1148         /* 802.11i */
1149         WLAN_STATUS_INVALID_IE = 40,
1150         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1151         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1152         WLAN_STATUS_INVALID_AKMP = 43,
1153         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1154         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1155         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1156         /* 802.11e */
1157         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1158         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1159         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1160         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1161         WLAN_STATUS_REQUEST_DECLINED = 37,
1162         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1163         WLAN_STATUS_CHANGE_TSPEC = 39,
1164         WLAN_STATUS_WAIT_TS_DELAY = 47,
1165         WLAN_STATUS_NO_DIRECT_LINK = 48,
1166         WLAN_STATUS_STA_NOT_PRESENT = 49,
1167         WLAN_STATUS_STA_NOT_QSTA = 50,
1168         /* 802.11s */
1169         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1170         WLAN_STATUS_FCG_NOT_SUPP = 78,
1171         WLAN_STATUS_STA_NO_TBTT = 78,
1172 };
1173
1174
1175 /* Reason codes */
1176 enum ieee80211_reasoncode {
1177         WLAN_REASON_UNSPECIFIED = 1,
1178         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1179         WLAN_REASON_DEAUTH_LEAVING = 3,
1180         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1181         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1182         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1183         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1184         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1185         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1186         /* 802.11h */
1187         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1188         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1189         /* 802.11i */
1190         WLAN_REASON_INVALID_IE = 13,
1191         WLAN_REASON_MIC_FAILURE = 14,
1192         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1193         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1194         WLAN_REASON_IE_DIFFERENT = 17,
1195         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1196         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1197         WLAN_REASON_INVALID_AKMP = 20,
1198         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1199         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1200         WLAN_REASON_IEEE8021X_FAILED = 23,
1201         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1202         /* 802.11e */
1203         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1204         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1205         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1206         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1207         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1208         WLAN_REASON_QSTA_NOT_USE = 37,
1209         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1210         WLAN_REASON_QSTA_TIMEOUT = 39,
1211         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1212         /* 802.11s */
1213         WLAN_REASON_MESH_PEER_CANCELED = 52,
1214         WLAN_REASON_MESH_MAX_PEERS = 53,
1215         WLAN_REASON_MESH_CONFIG = 54,
1216         WLAN_REASON_MESH_CLOSE = 55,
1217         WLAN_REASON_MESH_MAX_RETRIES = 56,
1218         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1219         WLAN_REASON_MESH_INVALID_GTK = 58,
1220         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1221         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1222         WLAN_REASON_MESH_PATH_ERROR = 61,
1223         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1224         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1225         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1226         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1227         WLAN_REASON_MESH_CHAN = 66,
1228 };
1229
1230
1231 /* Information Element IDs */
1232 enum ieee80211_eid {
1233         WLAN_EID_SSID = 0,
1234         WLAN_EID_SUPP_RATES = 1,
1235         WLAN_EID_FH_PARAMS = 2,
1236         WLAN_EID_DS_PARAMS = 3,
1237         WLAN_EID_CF_PARAMS = 4,
1238         WLAN_EID_TIM = 5,
1239         WLAN_EID_IBSS_PARAMS = 6,
1240         WLAN_EID_CHALLENGE = 16,
1241
1242         WLAN_EID_COUNTRY = 7,
1243         WLAN_EID_HP_PARAMS = 8,
1244         WLAN_EID_HP_TABLE = 9,
1245         WLAN_EID_REQUEST = 10,
1246
1247         WLAN_EID_QBSS_LOAD = 11,
1248         WLAN_EID_EDCA_PARAM_SET = 12,
1249         WLAN_EID_TSPEC = 13,
1250         WLAN_EID_TCLAS = 14,
1251         WLAN_EID_SCHEDULE = 15,
1252         WLAN_EID_TS_DELAY = 43,
1253         WLAN_EID_TCLAS_PROCESSING = 44,
1254         WLAN_EID_QOS_CAPA = 46,
1255         /* 802.11z */
1256         WLAN_EID_LINK_ID = 101,
1257         /* 802.11s */
1258         WLAN_EID_MESH_CONFIG = 113,
1259         WLAN_EID_MESH_ID = 114,
1260         WLAN_EID_LINK_METRIC_REPORT = 115,
1261         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1262         WLAN_EID_PEER_MGMT = 117,
1263         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1264         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1265         WLAN_EID_BEACON_TIMING = 120,
1266         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1267         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1268         WLAN_EID_MCCAOP_ADVERT = 123,
1269         WLAN_EID_MCCAOP_TEARDOWN = 124,
1270         WLAN_EID_GANN = 125,
1271         WLAN_EID_RANN = 126,
1272         WLAN_EID_PREQ = 130,
1273         WLAN_EID_PREP = 131,
1274         WLAN_EID_PERR = 132,
1275         WLAN_EID_PXU = 137,
1276         WLAN_EID_PXUC = 138,
1277         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1278         WLAN_EID_MIC = 140,
1279
1280         WLAN_EID_PWR_CONSTRAINT = 32,
1281         WLAN_EID_PWR_CAPABILITY = 33,
1282         WLAN_EID_TPC_REQUEST = 34,
1283         WLAN_EID_TPC_REPORT = 35,
1284         WLAN_EID_SUPPORTED_CHANNELS = 36,
1285         WLAN_EID_CHANNEL_SWITCH = 37,
1286         WLAN_EID_MEASURE_REQUEST = 38,
1287         WLAN_EID_MEASURE_REPORT = 39,
1288         WLAN_EID_QUIET = 40,
1289         WLAN_EID_IBSS_DFS = 41,
1290
1291         WLAN_EID_ERP_INFO = 42,
1292         WLAN_EID_EXT_SUPP_RATES = 50,
1293
1294         WLAN_EID_HT_CAPABILITY = 45,
1295         WLAN_EID_HT_INFORMATION = 61,
1296
1297         WLAN_EID_RSN = 48,
1298         WLAN_EID_MMIE = 76,
1299         WLAN_EID_WPA = 221,
1300         WLAN_EID_GENERIC = 221,
1301         WLAN_EID_VENDOR_SPECIFIC = 221,
1302         WLAN_EID_QOS_PARAMETER = 222,
1303
1304         WLAN_EID_AP_CHAN_REPORT = 51,
1305         WLAN_EID_NEIGHBOR_REPORT = 52,
1306         WLAN_EID_RCPI = 53,
1307         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1308         WLAN_EID_ANTENNA_INFO = 64,
1309         WLAN_EID_RSNI = 65,
1310         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1311         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1312         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1313         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1314         WLAN_EID_MULTIPLE_BSSID = 71,
1315         WLAN_EID_BSS_COEX_2040 = 72,
1316         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1317         WLAN_EID_EXT_CAPABILITY = 127,
1318
1319         WLAN_EID_MOBILITY_DOMAIN = 54,
1320         WLAN_EID_FAST_BSS_TRANSITION = 55,
1321         WLAN_EID_TIMEOUT_INTERVAL = 56,
1322         WLAN_EID_RIC_DATA = 57,
1323         WLAN_EID_RIC_DESCRIPTOR = 75,
1324
1325         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1326         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1327         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1328 };
1329
1330 /* Action category code */
1331 enum ieee80211_category {
1332         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1333         WLAN_CATEGORY_QOS = 1,
1334         WLAN_CATEGORY_DLS = 2,
1335         WLAN_CATEGORY_BACK = 3,
1336         WLAN_CATEGORY_PUBLIC = 4,
1337         WLAN_CATEGORY_HT = 7,
1338         WLAN_CATEGORY_SA_QUERY = 8,
1339         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1340         WLAN_CATEGORY_TDLS = 12,
1341         WLAN_CATEGORY_MESH_ACTION = 13,
1342         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1343         WLAN_CATEGORY_SELF_PROTECTED = 15,
1344         WLAN_CATEGORY_WMM = 17,
1345         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1346         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1347 };
1348
1349 /* SPECTRUM_MGMT action code */
1350 enum ieee80211_spectrum_mgmt_actioncode {
1351         WLAN_ACTION_SPCT_MSR_REQ = 0,
1352         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1353         WLAN_ACTION_SPCT_TPC_REQ = 2,
1354         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1355         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1356 };
1357
1358 /* HT action codes */
1359 enum ieee80211_ht_actioncode {
1360         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1361         WLAN_HT_ACTION_SMPS = 1,
1362         WLAN_HT_ACTION_PSMP = 2,
1363         WLAN_HT_ACTION_PCO_PHASE = 3,
1364         WLAN_HT_ACTION_CSI = 4,
1365         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1366         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1367         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1368 };
1369
1370 /* Self Protected Action codes */
1371 enum ieee80211_self_protected_actioncode {
1372         WLAN_SP_RESERVED = 0,
1373         WLAN_SP_MESH_PEERING_OPEN = 1,
1374         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1375         WLAN_SP_MESH_PEERING_CLOSE = 3,
1376         WLAN_SP_MGK_INFORM = 4,
1377         WLAN_SP_MGK_ACK = 5,
1378 };
1379
1380 /* Mesh action codes */
1381 enum ieee80211_mesh_actioncode {
1382         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1383         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1384         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1385         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1386         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1387         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1388         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1389         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1390         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1391         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1392         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1393 };
1394
1395 /* Security key length */
1396 enum ieee80211_key_len {
1397         WLAN_KEY_LEN_WEP40 = 5,
1398         WLAN_KEY_LEN_WEP104 = 13,
1399         WLAN_KEY_LEN_CCMP = 16,
1400         WLAN_KEY_LEN_TKIP = 32,
1401         WLAN_KEY_LEN_AES_CMAC = 16,
1402 };
1403
1404 /* Public action codes */
1405 enum ieee80211_pub_actioncode {
1406         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1407 };
1408
1409 /* TDLS action codes */
1410 enum ieee80211_tdls_actioncode {
1411         WLAN_TDLS_SETUP_REQUEST = 0,
1412         WLAN_TDLS_SETUP_RESPONSE = 1,
1413         WLAN_TDLS_SETUP_CONFIRM = 2,
1414         WLAN_TDLS_TEARDOWN = 3,
1415         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1416         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1417         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1418         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1419         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1420         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1421         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1422 };
1423
1424 /*
1425  * TDLS capabililites to be enabled in the 5th byte of the
1426  * @WLAN_EID_EXT_CAPABILITY information element
1427  */
1428 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1429 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1430
1431 /* TDLS specific payload type in the LLC/SNAP header */
1432 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1433
1434 /**
1435  * enum - mesh path selection protocol identifier
1436  *
1437  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1438  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1439  * be specified in a vendor specific information element
1440  */
1441 enum {
1442         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1443         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1444 };
1445
1446 /**
1447  * enum - mesh path selection metric identifier
1448  *
1449  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1450  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1451  * specified in a vendor specific information element
1452  */
1453 enum {
1454         IEEE80211_PATH_METRIC_AIRTIME = 0,
1455         IEEE80211_PATH_METRIC_VENDOR = 255,
1456 };
1457
1458
1459 /*
1460  * IEEE 802.11-2007 7.3.2.9 Country information element
1461  *
1462  * Minimum length is 8 octets, ie len must be evenly
1463  * divisible by 2
1464  */
1465
1466 /* Although the spec says 8 I'm seeing 6 in practice */
1467 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1468
1469 /* The Country String field of the element shall be 3 octets in length */
1470 #define IEEE80211_COUNTRY_STRING_LEN    3
1471
1472 /*
1473  * For regulatory extension stuff see IEEE 802.11-2007
1474  * Annex I (page 1141) and Annex J (page 1147). Also
1475  * review 7.3.2.9.
1476  *
1477  * When dot11RegulatoryClassesRequired is true and the
1478  * first_channel/reg_extension_id is >= 201 then the IE
1479  * compromises of the 'ext' struct represented below:
1480  *
1481  *  - Regulatory extension ID - when generating IE this just needs
1482  *    to be monotonically increasing for each triplet passed in
1483  *    the IE
1484  *  - Regulatory class - index into set of rules
1485  *  - Coverage class - index into air propagation time (Table 7-27),
1486  *    in microseconds, you can compute the air propagation time from
1487  *    the index by multiplying by 3, so index 10 yields a propagation
1488  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1489  *    yet. A value of 0 inicates air propagation of <= 1 us.
1490  *
1491  *  See also Table I.2 for Emission limit sets and table
1492  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1493  *  a reg_class to an emission limit set and behavior limit set.
1494  */
1495 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1496
1497 /*
1498  *  Channels numbers in the IE must be monotonically increasing
1499  *  if dot11RegulatoryClassesRequired is not true.
1500  *
1501  *  If dot11RegulatoryClassesRequired is true consecutive
1502  *  subband triplets following a regulatory triplet shall
1503  *  have monotonically increasing first_channel number fields.
1504  *
1505  *  Channel numbers shall not overlap.
1506  *
1507  *  Note that max_power is signed.
1508  */
1509 struct ieee80211_country_ie_triplet {
1510         union {
1511                 struct {
1512                         u8 first_channel;
1513                         u8 num_channels;
1514                         s8 max_power;
1515                 } __attribute__ ((packed)) chans;
1516                 struct {
1517                         u8 reg_extension_id;
1518                         u8 reg_class;
1519                         u8 coverage_class;
1520                 } __attribute__ ((packed)) ext;
1521         };
1522 } __attribute__ ((packed));
1523
1524 enum ieee80211_timeout_interval_type {
1525         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1526         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1527         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1528 };
1529
1530 /* BACK action code */
1531 enum ieee80211_back_actioncode {
1532         WLAN_ACTION_ADDBA_REQ = 0,
1533         WLAN_ACTION_ADDBA_RESP = 1,
1534         WLAN_ACTION_DELBA = 2,
1535 };
1536
1537 /* BACK (block-ack) parties */
1538 enum ieee80211_back_parties {
1539         WLAN_BACK_RECIPIENT = 0,
1540         WLAN_BACK_INITIATOR = 1,
1541 };
1542
1543 /* SA Query action */
1544 enum ieee80211_sa_query_action {
1545         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1546         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1547 };
1548
1549
1550 /* cipher suite selectors */
1551 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1552 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1553 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1554 /* reserved:                            0x000FAC03 */
1555 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1556 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1557 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1558
1559 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1560
1561 /* AKM suite selectors */
1562 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1563 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1564 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1565 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1566
1567 #define WLAN_MAX_KEY_LEN                32
1568
1569 #define WLAN_PMKID_LEN                  16
1570
1571 #define WLAN_OUI_WFA                    0x506f9a
1572 #define WLAN_OUI_TYPE_WFA_P2P           9
1573
1574 /*
1575  * WMM/802.11e Tspec Element
1576  */
1577 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1578 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1579
1580 enum ieee80211_tspec_status_code {
1581         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1582         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1583 };
1584
1585 struct ieee80211_tspec_ie {
1586         u8 element_id;
1587         u8 len;
1588         u8 oui[3];
1589         u8 oui_type;
1590         u8 oui_subtype;
1591         u8 version;
1592         __le16 tsinfo;
1593         u8 tsinfo_resvd;
1594         __le16 nominal_msdu;
1595         __le16 max_msdu;
1596         __le32 min_service_int;
1597         __le32 max_service_int;
1598         __le32 inactivity_int;
1599         __le32 suspension_int;
1600         __le32 service_start_time;
1601         __le32 min_data_rate;
1602         __le32 mean_data_rate;
1603         __le32 peak_data_rate;
1604         __le32 max_burst_size;
1605         __le32 delay_bound;
1606         __le32 min_phy_rate;
1607         __le16 sba;
1608         __le16 medium_time;
1609 } __packed;
1610
1611 /**
1612  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1613  * @hdr: the frame
1614  *
1615  * The qos ctrl bytes come after the frame_control, duration, seq_num
1616  * and 3 or 4 addresses of length ETH_ALEN.
1617  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1618  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1619  */
1620 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1621 {
1622         if (ieee80211_has_a4(hdr->frame_control))
1623                 return (u8 *)hdr + 30;
1624         else
1625                 return (u8 *)hdr + 24;
1626 }
1627
1628 /**
1629  * ieee80211_get_SA - get pointer to SA
1630  * @hdr: the frame
1631  *
1632  * Given an 802.11 frame, this function returns the offset
1633  * to the source address (SA). It does not verify that the
1634  * header is long enough to contain the address, and the
1635  * header must be long enough to contain the frame control
1636  * field.
1637  */
1638 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1639 {
1640         if (ieee80211_has_a4(hdr->frame_control))
1641                 return hdr->addr4;
1642         if (ieee80211_has_fromds(hdr->frame_control))
1643                 return hdr->addr3;
1644         return hdr->addr2;
1645 }
1646
1647 /**
1648  * ieee80211_get_DA - get pointer to DA
1649  * @hdr: the frame
1650  *
1651  * Given an 802.11 frame, this function returns the offset
1652  * to the destination address (DA). It does not verify that
1653  * the header is long enough to contain the address, and the
1654  * header must be long enough to contain the frame control
1655  * field.
1656  */
1657 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1658 {
1659         if (ieee80211_has_tods(hdr->frame_control))
1660                 return hdr->addr3;
1661         else
1662                 return hdr->addr1;
1663 }
1664
1665 /**
1666  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1667  * @hdr: the frame (buffer must include at least the first octet of payload)
1668  */
1669 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1670 {
1671         if (ieee80211_is_disassoc(hdr->frame_control) ||
1672             ieee80211_is_deauth(hdr->frame_control))
1673                 return true;
1674
1675         if (ieee80211_is_action(hdr->frame_control)) {
1676                 u8 *category;
1677
1678                 /*
1679                  * Action frames, excluding Public Action frames, are Robust
1680                  * Management Frames. However, if we are looking at a Protected
1681                  * frame, skip the check since the data may be encrypted and
1682                  * the frame has already been found to be a Robust Management
1683                  * Frame (by the other end).
1684                  */
1685                 if (ieee80211_has_protected(hdr->frame_control))
1686                         return true;
1687                 category = ((u8 *) hdr) + 24;
1688                 return *category != WLAN_CATEGORY_PUBLIC &&
1689                         *category != WLAN_CATEGORY_HT &&
1690                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1691                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1692         }
1693
1694         return false;
1695 }
1696
1697 /**
1698  * ieee80211_is_public_action - check if frame is a public action frame
1699  * @hdr: the frame
1700  * @len: length of the frame
1701  */
1702 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1703                                               size_t len)
1704 {
1705         struct ieee80211_mgmt *mgmt = (void *)hdr;
1706
1707         if (len < IEEE80211_MIN_ACTION_SIZE)
1708                 return false;
1709         if (!ieee80211_is_action(hdr->frame_control))
1710                 return false;
1711         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1712 }
1713
1714 /**
1715  * ieee80211_fhss_chan_to_freq - get channel frequency
1716  * @channel: the FHSS channel
1717  *
1718  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1719  * Ref IEEE 802.11-2007 section 14.6
1720  */
1721 static inline int ieee80211_fhss_chan_to_freq(int channel)
1722 {
1723         if ((channel > 1) && (channel < 96))
1724                 return channel + 2400;
1725         else
1726                 return -1;
1727 }
1728
1729 /**
1730  * ieee80211_freq_to_fhss_chan - get channel
1731  * @freq: the channels frequency
1732  *
1733  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1734  * Ref IEEE 802.11-2007 section 14.6
1735  */
1736 static inline int ieee80211_freq_to_fhss_chan(int freq)
1737 {
1738         if ((freq > 2401) && (freq < 2496))
1739                 return freq - 2400;
1740         else
1741                 return -1;
1742 }
1743
1744 /**
1745  * ieee80211_dsss_chan_to_freq - get channel center frequency
1746  * @channel: the DSSS channel
1747  *
1748  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1749  * Ref IEEE 802.11-2007 section 15.6
1750  */
1751 static inline int ieee80211_dsss_chan_to_freq(int channel)
1752 {
1753         if ((channel > 0) && (channel < 14))
1754                 return 2407 + (channel * 5);
1755         else if (channel == 14)
1756                 return 2484;
1757         else
1758                 return -1;
1759 }
1760
1761 /**
1762  * ieee80211_freq_to_dsss_chan - get channel
1763  * @freq: the frequency
1764  *
1765  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1766  * Ref IEEE 802.11-2007 section 15.6
1767  *
1768  * This routine selects the channel with the closest center frequency.
1769  */
1770 static inline int ieee80211_freq_to_dsss_chan(int freq)
1771 {
1772         if ((freq >= 2410) && (freq < 2475))
1773                 return (freq - 2405) / 5;
1774         else if ((freq >= 2482) && (freq < 2487))
1775                 return 14;
1776         else
1777                 return -1;
1778 }
1779
1780 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1781  * Ref IEEE 802.11-2007 section 18.4.6.2
1782  *
1783  * The channels and frequencies are the same as those defined for DSSS
1784  */
1785 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1786 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1787
1788 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1789  * Ref IEEE 802.11-2007 section 19.4.2
1790  */
1791 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1792 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1793
1794 /**
1795  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1796  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1797  * @channel: the OFDM channel
1798  *
1799  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1800  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1801  */
1802 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1803 {
1804         if ((channel > 0) && (channel <= 200) &&
1805             (s_freq >= 4000))
1806                 return s_freq + (channel * 5);
1807         else
1808                 return -1;
1809 }
1810
1811 /**
1812  * ieee80211_freq_to_ofdm_channel - get channel
1813  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1814  * @freq: the frequency
1815  *
1816  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1817  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1818  *
1819  * This routine selects the channel with the closest center frequency.
1820  */
1821 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1822 {
1823         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1824             (s_freq >= 4000))
1825                 return (freq + 2 - s_freq) / 5;
1826         else
1827                 return -1;
1828 }
1829
1830 /**
1831  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1832  * @tu: the TUs
1833  */
1834 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1835 {
1836         return 1024 * tu;
1837 }
1838
1839 /**
1840  * ieee80211_check_tim - check if AID bit is set in TIM
1841  * @tim: the TIM IE
1842  * @tim_len: length of the TIM IE
1843  * @aid: the AID to look for
1844  */
1845 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1846                                        u8 tim_len, u16 aid)
1847 {
1848         u8 mask;
1849         u8 index, indexn1, indexn2;
1850
1851         if (unlikely(!tim || tim_len < sizeof(*tim)))
1852                 return false;
1853
1854         aid &= 0x3fff;
1855         index = aid / 8;
1856         mask  = 1 << (aid & 7);
1857
1858         indexn1 = tim->bitmap_ctrl & 0xfe;
1859         indexn2 = tim_len + indexn1 - 4;
1860
1861         if (index < indexn1 || index > indexn2)
1862                 return false;
1863
1864         index -= indexn1;
1865
1866         return !!(tim->virtual_map[index] & mask);
1867 }
1868
1869 #endif /* LINUX_IEEE80211_H */