LXR linux/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#define FCS_LEN 4
  22
  23#define IEEE80211_FCTL_VERS             0x0003
  24#define IEEE80211_FCTL_FTYPE            0x000c
  25#define IEEE80211_FCTL_STYPE            0x00f0
  26#define IEEE80211_FCTL_TODS             0x0100
  27#define IEEE80211_FCTL_FROMDS           0x0200
  28#define IEEE80211_FCTL_MOREFRAGS        0x0400
  29#define IEEE80211_FCTL_RETRY            0x0800
  30#define IEEE80211_FCTL_PM               0x1000
  31#define IEEE80211_FCTL_MOREDATA         0x2000
  32#define IEEE80211_FCTL_PROTECTED        0x4000
  33#define IEEE80211_FCTL_ORDER            0x8000
  34
  35#define IEEE80211_SCTL_FRAG             0x000F
  36#define IEEE80211_SCTL_SEQ              0xFFF0
  37
  38#define IEEE80211_FTYPE_MGMT            0x0000
  39#define IEEE80211_FTYPE_CTL             0x0004
  40#define IEEE80211_FTYPE_DATA            0x0008
  41
  42/* management */
  43#define IEEE80211_STYPE_ASSOC_REQ       0x0000
  44#define IEEE80211_STYPE_ASSOC_RESP      0x0010
  45#define IEEE80211_STYPE_REASSOC_REQ     0x0020
  46#define IEEE80211_STYPE_REASSOC_RESP    0x0030
  47#define IEEE80211_STYPE_PROBE_REQ       0x0040
  48#define IEEE80211_STYPE_PROBE_RESP      0x0050
  49#define IEEE80211_STYPE_BEACON          0x0080
  50#define IEEE80211_STYPE_ATIM            0x0090
  51#define IEEE80211_STYPE_DISASSOC        0x00A0
  52#define IEEE80211_STYPE_AUTH            0x00B0
  53#define IEEE80211_STYPE_DEAUTH          0x00C0
  54#define IEEE80211_STYPE_ACTION          0x00D0
  55
  56/* control */
  57#define IEEE80211_STYPE_BACK_REQ        0x0080
  58#define IEEE80211_STYPE_BACK            0x0090
  59#define IEEE80211_STYPE_PSPOLL          0x00A0
  60#define IEEE80211_STYPE_RTS             0x00B0
  61#define IEEE80211_STYPE_CTS             0x00C0
  62#define IEEE80211_STYPE_ACK             0x00D0
  63#define IEEE80211_STYPE_CFEND           0x00E0
  64#define IEEE80211_STYPE_CFENDACK        0x00F0
  65
  66/* data */
  67#define IEEE80211_STYPE_DATA                    0x0000
  68#define IEEE80211_STYPE_DATA_CFACK              0x0010
  69#define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  70#define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  71#define IEEE80211_STYPE_NULLFUNC                0x0040
  72#define IEEE80211_STYPE_CFACK                   0x0050
  73#define IEEE80211_STYPE_CFPOLL                  0x0060
  74#define IEEE80211_STYPE_CFACKPOLL               0x0070
  75#define IEEE80211_STYPE_QOS_DATA                0x0080
  76#define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  77#define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  78#define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  79#define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  80#define IEEE80211_STYPE_QOS_CFACK               0x00D0
  81#define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  82#define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  83
  84
  85/* miscellaneous IEEE 802.11 constants */
  86#define IEEE80211_MAX_FRAG_THRESHOLD    2352
  87#define IEEE80211_MAX_RTS_THRESHOLD     2353
  88#define IEEE80211_MAX_AID               2007
  89#define IEEE80211_MAX_TIM_LEN           251
  90/* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  91   6.2.1.1.2.
  92
  93   802.11e clarifies the figure in section 7.1.2. The frame body is
  94   up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
  95#define IEEE80211_MAX_DATA_LEN          2304
  96/* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
  97#define IEEE80211_MAX_FRAME_LEN         2352
  98
  99#define IEEE80211_MAX_SSID_LEN          32
 100
 101#define IEEE80211_MAX_MESH_ID_LEN       32
 102#define IEEE80211_MESH_CONFIG_LEN       19
 103
 104#define IEEE80211_QOS_CTL_LEN           2
 105#define IEEE80211_QOS_CTL_TID_MASK      0x000F
 106#define IEEE80211_QOS_CTL_TAG1D_MASK    0x0007
 107
 108struct ieee80211_hdr {
 109        __le16 frame_control;
 110        __le16 duration_id;
 111        u8 addr1[6];
 112        u8 addr2[6];
 113        u8 addr3[6];
 114        __le16 seq_ctrl;
 115        u8 addr4[6];
 116} __attribute__ ((packed));
 117
 118/**
 119 * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 120 * @fc: frame control bytes in little-endian byteorder
 121 */
 122static inline int ieee80211_has_tods(__le16 fc)
 123{
 124        return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 125}
 126
 127/**
 128 * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 129 * @fc: frame control bytes in little-endian byteorder
 130 */
 131static inline int ieee80211_has_fromds(__le16 fc)
 132{
 133        return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 134}
 135
 136/**
 137 * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 138 * @fc: frame control bytes in little-endian byteorder
 139 */
 140static inline int ieee80211_has_a4(__le16 fc)
 141{
 142        __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 143        return (fc & tmp) == tmp;
 144}
 145
 146/**
 147 * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 148 * @fc: frame control bytes in little-endian byteorder
 149 */
 150static inline int ieee80211_has_morefrags(__le16 fc)
 151{
 152        return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 153}
 154
 155/**
 156 * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 157 * @fc: frame control bytes in little-endian byteorder
 158 */
 159static inline int ieee80211_has_retry(__le16 fc)
 160{
 161        return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 162}
 163
 164/**
 165 * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 166 * @fc: frame control bytes in little-endian byteorder
 167 */
 168static inline int ieee80211_has_pm(__le16 fc)
 169{
 170        return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 171}
 172
 173/**
 174 * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 175 * @fc: frame control bytes in little-endian byteorder
 176 */
 177static inline int ieee80211_has_moredata(__le16 fc)
 178{
 179        return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 180}
 181
 182/**
 183 * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 184 * @fc: frame control bytes in little-endian byteorder
 185 */
 186static inline int ieee80211_has_protected(__le16 fc)
 187{
 188        return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 189}
 190
 191/**
 192 * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 193 * @fc: frame control bytes in little-endian byteorder
 194 */
 195static inline int ieee80211_has_order(__le16 fc)
 196{
 197        return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 198}
 199
 200/**
 201 * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 202 * @fc: frame control bytes in little-endian byteorder
 203 */
 204static inline int ieee80211_is_mgmt(__le16 fc)
 205{
 206        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 207               cpu_to_le16(IEEE80211_FTYPE_MGMT);
 208}
 209
 210/**
 211 * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 212 * @fc: frame control bytes in little-endian byteorder
 213 */
 214static inline int ieee80211_is_ctl(__le16 fc)
 215{
 216        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 217               cpu_to_le16(IEEE80211_FTYPE_CTL);
 218}
 219
 220/**
 221 * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 222 * @fc: frame control bytes in little-endian byteorder
 223 */
 224static inline int ieee80211_is_data(__le16 fc)
 225{
 226        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 227               cpu_to_le16(IEEE80211_FTYPE_DATA);
 228}
 229
 230/**
 231 * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 232 * @fc: frame control bytes in little-endian byteorder
 233 */
 234static inline int ieee80211_is_data_qos(__le16 fc)
 235{
 236        /*
 237         * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 238         * to check the one bit
 239         */
 240        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 241               cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 242}
 243
 244/**
 245 * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 246 * @fc: frame control bytes in little-endian byteorder
 247 */
 248static inline int ieee80211_is_data_present(__le16 fc)
 249{
 250        /*
 251         * mask with 0x40 and test that that bit is clear to only return true
 252         * for the data-containing substypes.
 253         */
 254        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 255               cpu_to_le16(IEEE80211_FTYPE_DATA);
 256}
 257
 258/**
 259 * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 260 * @fc: frame control bytes in little-endian byteorder
 261 */
 262static inline int ieee80211_is_assoc_req(__le16 fc)
 263{
 264        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 265               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 266}
 267
 268/**
 269 * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 270 * @fc: frame control bytes in little-endian byteorder
 271 */
 272static inline int ieee80211_is_assoc_resp(__le16 fc)
 273{
 274        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 275               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 276}
 277
 278/**
 279 * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 280 * @fc: frame control bytes in little-endian byteorder
 281 */
 282static inline int ieee80211_is_reassoc_req(__le16 fc)
 283{
 284        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 285               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 286}
 287
 288/**
 289 * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 290 * @fc: frame control bytes in little-endian byteorder
 291 */
 292static inline int ieee80211_is_reassoc_resp(__le16 fc)
 293{
 294        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 295               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 296}
 297
 298/**
 299 * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 300 * @fc: frame control bytes in little-endian byteorder
 301 */
 302static inline int ieee80211_is_probe_req(__le16 fc)
 303{
 304        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 305               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 306}
 307
 308/**
 309 * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 310 * @fc: frame control bytes in little-endian byteorder
 311 */
 312static inline int ieee80211_is_probe_resp(__le16 fc)
 313{
 314        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 315               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 316}
 317
 318/**
 319 * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 320 * @fc: frame control bytes in little-endian byteorder
 321 */
 322static inline int ieee80211_is_beacon(__le16 fc)
 323{
 324        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 325               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 326}
 327
 328/**
 329 * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 330 * @fc: frame control bytes in little-endian byteorder
 331 */
 332static inline int ieee80211_is_atim(__le16 fc)
 333{
 334        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 335               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 336}
 337
 338/**
 339 * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 340 * @fc: frame control bytes in little-endian byteorder
 341 */
 342static inline int ieee80211_is_disassoc(__le16 fc)
 343{
 344        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 345               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 346}
 347
 348/**
 349 * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 350 * @fc: frame control bytes in little-endian byteorder
 351 */
 352static inline int ieee80211_is_auth(__le16 fc)
 353{
 354        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 355               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 356}
 357
 358/**
 359 * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 360 * @fc: frame control bytes in little-endian byteorder
 361 */
 362static inline int ieee80211_is_deauth(__le16 fc)
 363{
 364        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 365               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 366}
 367
 368/**
 369 * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 370 * @fc: frame control bytes in little-endian byteorder
 371 */
 372static inline int ieee80211_is_action(__le16 fc)
 373{
 374        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 375               cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 376}
 377
 378/**
 379 * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 380 * @fc: frame control bytes in little-endian byteorder
 381 */
 382static inline int ieee80211_is_back_req(__le16 fc)
 383{
 384        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 385               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 386}
 387
 388/**
 389 * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 390 * @fc: frame control bytes in little-endian byteorder
 391 */
 392static inline int ieee80211_is_back(__le16 fc)
 393{
 394        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 395               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 396}
 397
 398/**
 399 * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 400 * @fc: frame control bytes in little-endian byteorder
 401 */
 402static inline int ieee80211_is_pspoll(__le16 fc)
 403{
 404        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 405               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 406}
 407
 408/**
 409 * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 410 * @fc: frame control bytes in little-endian byteorder
 411 */
 412static inline int ieee80211_is_rts(__le16 fc)
 413{
 414        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 415               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 416}
 417
 418/**
 419 * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 420 * @fc: frame control bytes in little-endian byteorder
 421 */
 422static inline int ieee80211_is_cts(__le16 fc)
 423{
 424        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 425               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 426}
 427
 428/**
 429 * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 430 * @fc: frame control bytes in little-endian byteorder
 431 */
 432static inline int ieee80211_is_ack(__le16 fc)
 433{
 434        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 435               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 436}
 437
 438/**
 439 * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 440 * @fc: frame control bytes in little-endian byteorder
 441 */
 442static inline int ieee80211_is_cfend(__le16 fc)
 443{
 444        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 445               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 446}
 447
 448/**
 449 * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 450 * @fc: frame control bytes in little-endian byteorder
 451 */
 452static inline int ieee80211_is_cfendack(__le16 fc)
 453{
 454        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 455               cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 456}
 457
 458/**
 459 * ieee80211_is_nullfunc - check if FTYPE=IEEE80211_FTYPE_DATA and STYPE=IEEE80211_STYPE_NULLFUNC
 460 * @fc: frame control bytes in little-endian byteorder
 461 */
 462static inline int ieee80211_is_nullfunc(__le16 fc)
 463{
 464        return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 465               cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 466}
 467
 468struct ieee80211s_hdr {
 469        u8 flags;
 470        u8 ttl;
 471        __le32 seqnum;
 472        u8 eaddr1[6];
 473        u8 eaddr2[6];
 474        u8 eaddr3[6];
 475} __attribute__ ((packed));
 476
 477/* Mesh flags */
 478#define MESH_FLAGS_AE_A4        0x1
 479#define MESH_FLAGS_AE_A5_A6     0x2
 480#define MESH_FLAGS_PS_DEEP      0x4
 481
 482/**
 483 * struct ieee80211_quiet_ie
 484 *
 485 * This structure refers to "Quiet information element"
 486 */
 487struct ieee80211_quiet_ie {
 488        u8 count;
 489        u8 period;
 490        __le16 duration;
 491        __le16 offset;
 492} __attribute__ ((packed));
 493
 494/**
 495 * struct ieee80211_msrment_ie
 496 *
 497 * This structure refers to "Measurement Request/Report information element"
 498 */
 499struct ieee80211_msrment_ie {
 500        u8 token;
 501        u8 mode;
 502        u8 type;
 503        u8 request[0];
 504} __attribute__ ((packed));
 505
 506/**
 507 * struct ieee80211_channel_sw_ie
 508 *
 509 * This structure refers to "Channel Switch Announcement information element"
 510 */
 511struct ieee80211_channel_sw_ie {
 512        u8 mode;
 513        u8 new_ch_num;
 514        u8 count;
 515} __attribute__ ((packed));
 516
 517/**
 518 * struct ieee80211_tim
 519 *
 520 * This structure refers to "Traffic Indication Map information element"
 521 */
 522struct ieee80211_tim_ie {
 523        u8 dtim_count;
 524        u8 dtim_period;
 525        u8 bitmap_ctrl;
 526        /* variable size: 1 - 251 bytes */
 527        u8 virtual_map[0];
 528} __attribute__ ((packed));
 529
 530struct ieee80211_mgmt {
 531        __le16 frame_control;
 532        __le16 duration;
 533        u8 da[6];
 534        u8 sa[6];
 535        u8 bssid[6];
 536        __le16 seq_ctrl;
 537        union {
 538                struct {
 539                        __le16 auth_alg;
 540                        __le16 auth_transaction;
 541                        __le16 status_code;
 542                        /* possibly followed by Challenge text */
 543                        u8 variable[0];
 544                } __attribute__ ((packed)) auth;
 545                struct {
 546                        __le16 reason_code;
 547                } __attribute__ ((packed)) deauth;
 548                struct {
 549                        __le16 capab_info;
 550                        __le16 listen_interval;
 551                        /* followed by SSID and Supported rates */
 552                        u8 variable[0];
 553                } __attribute__ ((packed)) assoc_req;
 554                struct {
 555                        __le16 capab_info;
 556                        __le16 status_code;
 557                        __le16 aid;
 558                        /* followed by Supported rates */
 559                        u8 variable[0];
 560                } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 561                struct {
 562                        __le16 capab_info;
 563                        __le16 listen_interval;
 564                        u8 current_ap[6];
 565                        /* followed by SSID and Supported rates */
 566                        u8 variable[0];
 567                } __attribute__ ((packed)) reassoc_req;
 568                struct {
 569                        __le16 reason_code;
 570                } __attribute__ ((packed)) disassoc;
 571                struct {
 572                        __le64 timestamp;
 573                        __le16 beacon_int;
 574                        __le16 capab_info;
 575                        /* followed by some of SSID, Supported rates,
 576                         * FH Params, DS Params, CF Params, IBSS Params, TIM */
 577                        u8 variable[0];
 578                } __attribute__ ((packed)) beacon;
 579                struct {
 580                        /* only variable items: SSID, Supported rates */
 581                        u8 variable[0];
 582                } __attribute__ ((packed)) probe_req;
 583                struct {
 584                        __le64 timestamp;
 585                        __le16 beacon_int;
 586                        __le16 capab_info;
 587                        /* followed by some of SSID, Supported rates,
 588                         * FH Params, DS Params, CF Params, IBSS Params */
 589                        u8 variable[0];
 590                } __attribute__ ((packed)) probe_resp;
 591                struct {
 592                        u8 category;
 593                        union {
 594                                struct {
 595                                        u8 action_code;
 596                                        u8 dialog_token;
 597                                        u8 status_code;
 598                                        u8 variable[0];
 599                                } __attribute__ ((packed)) wme_action;
 600                                struct{
 601                                        u8 action_code;
 602                                        u8 element_id;
 603                                        u8 length;
 604                                        struct ieee80211_channel_sw_ie sw_elem;
 605                                } __attribute__((packed)) chan_switch;
 606                                struct{
 607                                        u8 action_code;
 608                                        u8 dialog_token;
 609                                        u8 element_id;
 610                                        u8 length;
 611                                        struct ieee80211_msrment_ie msr_elem;
 612                                } __attribute__((packed)) measurement;
 613                                struct{
 614                                        u8 action_code;
 615                                        u8 dialog_token;
 616                                        __le16 capab;
 617                                        __le16 timeout;
 618                                        __le16 start_seq_num;
 619                                } __attribute__((packed)) addba_req;
 620                                struct{
 621                                        u8 action_code;
 622                                        u8 dialog_token;
 623                                        __le16 status;
 624                                        __le16 capab;
 625                                        __le16 timeout;
 626                                } __attribute__((packed)) addba_resp;
 627                                struct{
 628                                        u8 action_code;
 629                                        __le16 params;
 630                                        __le16 reason_code;
 631                                } __attribute__((packed)) delba;
 632                                struct{
 633                                        u8 action_code;
 634                                        /* capab_info for open and confirm,
 635                                         * reason for close
 636                                         */
 637                                        __le16 aux;
 638                                        /* Followed in plink_confirm by status
 639                                         * code, AID and supported rates,
 640                                         * and directly by supported rates in
 641                                         * plink_open and plink_close
 642                                         */
 643                                        u8 variable[0];
 644                                } __attribute__((packed)) plink_action;
 645                                struct{
 646                                        u8 action_code;
 647                                        u8 variable[0];
 648                                } __attribute__((packed)) mesh_action;
 649                        } u;
 650                } __attribute__ ((packed)) action;
 651        } u;
 652} __attribute__ ((packed));
 653
 654/* mgmt header + 1 byte category code */
 655#define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 656
 657
 658/* Control frames */
 659struct ieee80211_rts {
 660        __le16 frame_control;
 661        __le16 duration;
 662        u8 ra[6];
 663        u8 ta[6];
 664} __attribute__ ((packed));
 665
 666struct ieee80211_cts {
 667        __le16 frame_control;
 668        __le16 duration;
 669        u8 ra[6];
 670} __attribute__ ((packed));
 671
 672struct ieee80211_pspoll {
 673        __le16 frame_control;
 674        __le16 aid;
 675        u8 bssid[6];
 676        u8 ta[6];
 677} __attribute__ ((packed));
 678
 679/**
 680 * struct ieee80211_bar - HT Block Ack Request
 681 *
 682 * This structure refers to "HT BlockAckReq" as
 683 * described in 802.11n draft section 7.2.1.7.1
 684 */
 685struct ieee80211_bar {
 686        __le16 frame_control;
 687        __le16 duration;
 688        __u8 ra[6];
 689        __u8 ta[6];
 690        __le16 control;
 691        __le16 start_seq_num;
 692} __attribute__((packed));
 693
 694/* 802.11 BAR control masks */
 695#define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL     0x0000
 696#define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA  0x0004
 697
 698
 699#define IEEE80211_HT_MCS_MASK_LEN               10
 700
 701/**
 702 * struct ieee80211_mcs_info - MCS information
 703 * @rx_mask: RX mask
 704 * @rx_highest: highest supported RX rate
 705 * @tx_params: TX parameters
 706 */
 707struct ieee80211_mcs_info {
 708        u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 709        __le16 rx_highest;
 710        u8 tx_params;
 711        u8 reserved[3];
 712} __attribute__((packed));
 713
 714/* 802.11n HT capability MSC set */
 715#define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 716#define IEEE80211_HT_MCS_TX_DEFINED             0x01
 717#define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 718/* value 0 == 1 stream etc */
 719#define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 720#define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 721#define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 722#define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 723
 724/*
 725 * 802.11n D5.0 20.3.5 / 20.6 says:
 726 * - indices 0 to 7 and 32 are single spatial stream
 727 * - 8 to 31 are multiple spatial streams using equal modulation
 728 *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 729 * - remainder are multiple spatial streams using unequal modulation
 730 */
 731#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 732#define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 733        (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 734
 735/**
 736 * struct ieee80211_ht_cap - HT capabilities
 737 *
 738 * This structure is the "HT capabilities element" as
 739 * described in 802.11n D5.0 7.3.2.57
 740 */
 741struct ieee80211_ht_cap {
 742        __le16 cap_info;
 743        u8 ampdu_params_info;
 744
 745        /* 16 bytes MCS information */
 746        struct ieee80211_mcs_info mcs;
 747
 748        __le16 extended_ht_cap_info;
 749        __le32 tx_BF_cap_info;
 750        u8 antenna_selection_info;
 751} __attribute__ ((packed));
 752
 753/* 802.11n HT capabilities masks (for cap_info) */
 754#define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 755#define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 756#define IEEE80211_HT_CAP_SM_PS                  0x000C
 757#define IEEE80211_HT_CAP_GRN_FLD                0x0010
 758#define IEEE80211_HT_CAP_SGI_20                 0x0020
 759#define IEEE80211_HT_CAP_SGI_40                 0x0040
 760#define IEEE80211_HT_CAP_TX_STBC                0x0080
 761#define IEEE80211_HT_CAP_RX_STBC                0x0300
 762#define IEEE80211_HT_CAP_DELAY_BA               0x0400
 763#define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 764#define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 765#define IEEE80211_HT_CAP_PSMP_SUPPORT           0x2000
 766#define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 767#define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 768
 769/* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 770#define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 771#define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 772
 773/**
 774 * struct ieee80211_ht_info - HT information
 775 *
 776 * This structure is the "HT information element" as
 777 * described in 802.11n D5.0 7.3.2.58
 778 */
 779struct ieee80211_ht_info {
 780        u8 control_chan;
 781        u8 ht_param;
 782        __le16 operation_mode;
 783        __le16 stbc_param;
 784        u8 basic_set[16];
 785} __attribute__ ((packed));
 786
 787/* for ht_param */
 788#define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
 789#define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
 790#define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
 791#define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
 792#define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
 793#define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
 794#define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
 795#define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
 796
 797/* for operation_mode */
 798#define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
 799#define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
 800#define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
 801#define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
 802#define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
 803#define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
 804#define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
 805
 806/* for stbc_param */
 807#define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
 808#define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
 809#define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
 810#define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
 811#define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
 812#define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
 813
 814
 815/* block-ack parameters */
 816#define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
 817#define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
 818#define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFA0
 819#define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
 820#define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
 821
 822/*
 823 * A-PMDU buffer sizes
 824 * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
 825 */
 826#define IEEE80211_MIN_AMPDU_BUF 0x8
 827#define IEEE80211_MAX_AMPDU_BUF 0x40
 828
 829
 830/* Spatial Multiplexing Power Save Modes */
 831#define WLAN_HT_CAP_SM_PS_STATIC        0
 832#define WLAN_HT_CAP_SM_PS_DYNAMIC       1
 833#define WLAN_HT_CAP_SM_PS_INVALID       2
 834#define WLAN_HT_CAP_SM_PS_DISABLED      3
 835
 836/* Authentication algorithms */
 837#define WLAN_AUTH_OPEN 0
 838#define WLAN_AUTH_SHARED_KEY 1
 839#define WLAN_AUTH_LEAP 128
 840
 841#define WLAN_AUTH_CHALLENGE_LEN 128
 842
 843#define WLAN_CAPABILITY_ESS             (1<<0)
 844#define WLAN_CAPABILITY_IBSS            (1<<1)
 845#define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
 846#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 847#define WLAN_CAPABILITY_PRIVACY         (1<<4)
 848#define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
 849#define WLAN_CAPABILITY_PBCC            (1<<6)
 850#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 851
 852/* 802.11h */
 853#define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
 854#define WLAN_CAPABILITY_QOS             (1<<9)
 855#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 856#define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
 857/* measurement */
 858#define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
 859#define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
 860#define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
 861
 862#define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
 863#define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
 864#define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
 865
 866
 867/* 802.11g ERP information element */
 868#define WLAN_ERP_NON_ERP_PRESENT (1<<0)
 869#define WLAN_ERP_USE_PROTECTION (1<<1)
 870#define WLAN_ERP_BARKER_PREAMBLE (1<<2)
 871
 872/* WLAN_ERP_BARKER_PREAMBLE values */
 873enum {
 874        WLAN_ERP_PREAMBLE_SHORT = 0,
 875        WLAN_ERP_PREAMBLE_LONG = 1,
 876};
 877
 878/* Status codes */
 879enum ieee80211_statuscode {
 880        WLAN_STATUS_SUCCESS = 0,
 881        WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 882        WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 883        WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 884        WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 885        WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 886        WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 887        WLAN_STATUS_CHALLENGE_FAIL = 15,
 888        WLAN_STATUS_AUTH_TIMEOUT = 16,
 889        WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 890        WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 891        /* 802.11b */
 892        WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 893        WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 894        WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 895        /* 802.11h */
 896        WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 897        WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 898        WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 899        /* 802.11g */
 900        WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 901        WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 902        /* 802.11i */
 903        WLAN_STATUS_INVALID_IE = 40,
 904        WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 905        WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 906        WLAN_STATUS_INVALID_AKMP = 43,
 907        WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 908        WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 909        WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 910        /* 802.11e */
 911        WLAN_STATUS_UNSPECIFIED_QOS = 32,
 912        WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
 913        WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
 914        WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
 915        WLAN_STATUS_REQUEST_DECLINED = 37,
 916        WLAN_STATUS_INVALID_QOS_PARAM = 38,
 917        WLAN_STATUS_CHANGE_TSPEC = 39,
 918        WLAN_STATUS_WAIT_TS_DELAY = 47,
 919        WLAN_STATUS_NO_DIRECT_LINK = 48,
 920        WLAN_STATUS_STA_NOT_PRESENT = 49,
 921        WLAN_STATUS_STA_NOT_QSTA = 50,
 922};
 923
 924
 925/* Reason codes */
 926enum ieee80211_reasoncode {
 927        WLAN_REASON_UNSPECIFIED = 1,
 928        WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 929        WLAN_REASON_DEAUTH_LEAVING = 3,
 930        WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 931        WLAN_REASON_DISASSOC_AP_BUSY = 5,
 932        WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 933        WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 934        WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 935        WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 936        /* 802.11h */
 937        WLAN_REASON_DISASSOC_BAD_POWER = 10,
 938        WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 939        /* 802.11i */
 940        WLAN_REASON_INVALID_IE = 13,
 941        WLAN_REASON_MIC_FAILURE = 14,
 942        WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 943        WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 944        WLAN_REASON_IE_DIFFERENT = 17,
 945        WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 946        WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 947        WLAN_REASON_INVALID_AKMP = 20,
 948        WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 949        WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 950        WLAN_REASON_IEEE8021X_FAILED = 23,
 951        WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 952        /* 802.11e */
 953        WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
 954        WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
 955        WLAN_REASON_DISASSOC_LOW_ACK = 34,
 956        WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
 957        WLAN_REASON_QSTA_LEAVE_QBSS = 36,
 958        WLAN_REASON_QSTA_NOT_USE = 37,
 959        WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
 960        WLAN_REASON_QSTA_TIMEOUT = 39,
 961        WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
 962};
 963
 964
 965/* Information Element IDs */
 966enum ieee80211_eid {
 967        WLAN_EID_SSID = 0,
 968        WLAN_EID_SUPP_RATES = 1,
 969        WLAN_EID_FH_PARAMS = 2,
 970        WLAN_EID_DS_PARAMS = 3,
 971        WLAN_EID_CF_PARAMS = 4,
 972        WLAN_EID_TIM = 5,
 973        WLAN_EID_IBSS_PARAMS = 6,
 974        WLAN_EID_CHALLENGE = 16,
 975        /* 802.11d */
 976        WLAN_EID_COUNTRY = 7,
 977        WLAN_EID_HP_PARAMS = 8,
 978        WLAN_EID_HP_TABLE = 9,
 979        WLAN_EID_REQUEST = 10,
 980        /* 802.11e */
 981        WLAN_EID_QBSS_LOAD = 11,
 982        WLAN_EID_EDCA_PARAM_SET = 12,
 983        WLAN_EID_TSPEC = 13,
 984        WLAN_EID_TCLAS = 14,
 985        WLAN_EID_SCHEDULE = 15,
 986        WLAN_EID_TS_DELAY = 43,
 987        WLAN_EID_TCLAS_PROCESSING = 44,
 988        WLAN_EID_QOS_CAPA = 46,
 989        /* 802.11s
 990         *
 991         * All mesh EID numbers are pending IEEE 802.11 ANA approval.
 992         * The numbers have been incremented from those suggested in
 993         * 802.11s/D2.0 so that MESH_CONFIG does not conflict with
 994         * EXT_SUPP_RATES.
 995         */
 996        WLAN_EID_MESH_CONFIG = 51,
 997        WLAN_EID_MESH_ID = 52,
 998        WLAN_EID_PEER_LINK = 55,
 999        WLAN_EID_PREQ = 68,
1000        WLAN_EID_PREP = 69,

1001        WLAN_EID_PERR = 70,
1002        /* 802.11h */
1003        WLAN_EID_PWR_CONSTRAINT = 32,
1004        WLAN_EID_PWR_CAPABILITY = 33,
1005        WLAN_EID_TPC_REQUEST = 34,
1006        WLAN_EID_TPC_REPORT = 35,
1007        WLAN_EID_SUPPORTED_CHANNELS = 36,
1008        WLAN_EID_CHANNEL_SWITCH = 37,
1009        WLAN_EID_MEASURE_REQUEST = 38,
1010        WLAN_EID_MEASURE_REPORT = 39,
1011        WLAN_EID_QUIET = 40,
1012        WLAN_EID_IBSS_DFS = 41,
1013        /* 802.11g */
1014        WLAN_EID_ERP_INFO = 42,
1015        WLAN_EID_EXT_SUPP_RATES = 50,
1016        /* 802.11n */
1017        WLAN_EID_HT_CAPABILITY = 45,
1018        WLAN_EID_HT_INFORMATION = 61,
1019        /* 802.11i */
1020        WLAN_EID_RSN = 48,
1021        WLAN_EID_WPA = 221,
1022        WLAN_EID_GENERIC = 221,
1023        WLAN_EID_VENDOR_SPECIFIC = 221,
1024        WLAN_EID_QOS_PARAMETER = 222
1025};
1026
1027/* Action category code */
1028enum ieee80211_category {
1029        WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1030        WLAN_CATEGORY_QOS = 1,
1031        WLAN_CATEGORY_DLS = 2,
1032        WLAN_CATEGORY_BACK = 3,
1033        WLAN_CATEGORY_WMM = 17,
1034};
1035
1036/* SPECTRUM_MGMT action code */
1037enum ieee80211_spectrum_mgmt_actioncode {
1038        WLAN_ACTION_SPCT_MSR_REQ = 0,
1039        WLAN_ACTION_SPCT_MSR_RPRT = 1,
1040        WLAN_ACTION_SPCT_TPC_REQ = 2,
1041        WLAN_ACTION_SPCT_TPC_RPRT = 3,
1042        WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1043};
1044
1045/*
1046 * IEEE 802.11-2007 7.3.2.9 Country information element
1047 *
1048 * Minimum length is 8 octets, ie len must be evenly
1049 * divisible by 2
1050 */
1051
1052/* Although the spec says 8 I'm seeing 6 in practice */
1053#define IEEE80211_COUNTRY_IE_MIN_LEN    6
1054
1055/*
1056 * For regulatory extension stuff see IEEE 802.11-2007
1057 * Annex I (page 1141) and Annex J (page 1147). Also
1058 * review 7.3.2.9.
1059 *
1060 * When dot11RegulatoryClassesRequired is true and the
1061 * first_channel/reg_extension_id is >= 201 then the IE
1062 * compromises of the 'ext' struct represented below:
1063 *
1064 *  - Regulatory extension ID - when generating IE this just needs
1065 *    to be monotonically increasing for each triplet passed in
1066 *    the IE
1067 *  - Regulatory class - index into set of rules
1068 *  - Coverage class - index into air propagation time (Table 7-27),
1069 *    in microseconds, you can compute the air propagation time from
1070 *    the index by multiplying by 3, so index 10 yields a propagation
1071 *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1072 *    yet. A value of 0 inicates air propagation of <= 1 us.
1073 *
1074 *  See also Table I.2 for Emission limit sets and table
1075 *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1076 *  a reg_class to an emission limit set and behavior limit set.
1077 */
1078#define IEEE80211_COUNTRY_EXTENSION_ID 201
1079
1080/*
1081 *  Channels numbers in the IE must be monotonically increasing
1082 *  if dot11RegulatoryClassesRequired is not true.
1083 *
1084 *  If dot11RegulatoryClassesRequired is true consecutive
1085 *  subband triplets following a regulatory triplet shall
1086 *  have monotonically increasing first_channel number fields.
1087 *
1088 *  Channel numbers shall not overlap.
1089 *
1090 *  Note that max_power is signed.
1091 */
1092struct ieee80211_country_ie_triplet {
1093        union {
1094                struct {
1095                        u8 first_channel;
1096                        u8 num_channels;
1097                        s8 max_power;
1098                } __attribute__ ((packed)) chans;
1099                struct {
1100                        u8 reg_extension_id;
1101                        u8 reg_class;
1102                        u8 coverage_class;
1103                } __attribute__ ((packed)) ext;
1104        };
1105} __attribute__ ((packed));
1106
1107/* BACK action code */
1108enum ieee80211_back_actioncode {
1109        WLAN_ACTION_ADDBA_REQ = 0,
1110        WLAN_ACTION_ADDBA_RESP = 1,
1111        WLAN_ACTION_DELBA = 2,
1112};
1113
1114/* BACK (block-ack) parties */
1115enum ieee80211_back_parties {
1116        WLAN_BACK_RECIPIENT = 0,
1117        WLAN_BACK_INITIATOR = 1,
1118        WLAN_BACK_TIMER = 2,
1119};
1120
1121/* A-MSDU 802.11n */
1122#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
1123
1124/* cipher suite selectors */
1125#define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1126#define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1127#define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1128/* reserved:                            0x000FAC03 */
1129#define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1130#define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1131
1132#define WLAN_MAX_KEY_LEN                32
1133
1134/**
1135 * ieee80211_get_qos_ctl - get pointer to qos control bytes
1136 * @hdr: the frame
1137 *
1138 * The qos ctrl bytes come after the frame_control, duration, seq_num
1139 * and 3 or 4 addresses of length ETH_ALEN.
1140 * 3 addr: 2 + 2 + 2 + 3*6 = 24
1141 * 4 addr: 2 + 2 + 2 + 4*6 = 30
1142 */
1143static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1144{
1145        if (ieee80211_has_a4(hdr->frame_control))
1146                return (u8 *)hdr + 30;
1147        else
1148                return (u8 *)hdr + 24;
1149}
1150
1151/**
1152 * ieee80211_get_SA - get pointer to SA
1153 * @hdr: the frame
1154 *
1155 * Given an 802.11 frame, this function returns the offset
1156 * to the source address (SA). It does not verify that the
1157 * header is long enough to contain the address, and the
1158 * header must be long enough to contain the frame control
1159 * field.
1160 */
1161static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1162{
1163        if (ieee80211_has_a4(hdr->frame_control))
1164                return hdr->addr4;
1165        if (ieee80211_has_fromds(hdr->frame_control))
1166                return hdr->addr3;
1167        return hdr->addr2;
1168}
1169
1170/**
1171 * ieee80211_get_DA - get pointer to DA
1172 * @hdr: the frame
1173 *
1174 * Given an 802.11 frame, this function returns the offset
1175 * to the destination address (DA). It does not verify that
1176 * the header is long enough to contain the address, and the
1177 * header must be long enough to contain the frame control
1178 * field.
1179 */
1180static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1181{
1182        if (ieee80211_has_tods(hdr->frame_control))
1183                return hdr->addr3;
1184        else
1185                return hdr->addr1;
1186}
1187
1188#endif /* LINUX_IEEE80211_H */
1189