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   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 IEEE80211_H
  16 #define IEEE80211_H
  17
  18 #include <linux/types.h>
  19
  20 #define FCS_LEN 4
  21
  22 #define IEEE80211_FCTL_VERS             0x0003
  23 #define IEEE80211_FCTL_FTYPE            0x000c
  24 #define IEEE80211_FCTL_STYPE            0x00f0
  25 #define IEEE80211_FCTL_TODS             0x0100
  26 #define IEEE80211_FCTL_FROMDS           0x0200
  27 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  28 #define IEEE80211_FCTL_RETRY            0x0800
  29 #define IEEE80211_FCTL_PM               0x1000
  30 #define IEEE80211_FCTL_MOREDATA         0x2000
  31 #define IEEE80211_FCTL_PROTECTED        0x4000
  32 #define IEEE80211_FCTL_ORDER            0x8000
  33
  34 #define IEEE80211_SCTL_FRAG             0x000F
  35 #define IEEE80211_SCTL_SEQ              0xFFF0
  36
  37 #define IEEE80211_FTYPE_MGMT            0x0000
  38 #define IEEE80211_FTYPE_CTL             0x0004
  39 #define IEEE80211_FTYPE_DATA            0x0008
  40
  41 /* management */
  42 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  43 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  44 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  45 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  46 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  47 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  48 #define IEEE80211_STYPE_BEACON          0x0080
  49 #define IEEE80211_STYPE_ATIM            0x0090
  50 #define IEEE80211_STYPE_DISASSOC        0x00A0
  51 #define IEEE80211_STYPE_AUTH            0x00B0
  52 #define IEEE80211_STYPE_DEAUTH          0x00C0
  53 #define IEEE80211_STYPE_ACTION          0x00D0
  54
  55 /* control */
  56 #define IEEE80211_STYPE_PSPOLL          0x00A0
  57 #define IEEE80211_STYPE_RTS             0x00B0
  58 #define IEEE80211_STYPE_CTS             0x00C0
  59 #define IEEE80211_STYPE_ACK             0x00D0
  60 #define IEEE80211_STYPE_CFEND           0x00E0
  61 #define IEEE80211_STYPE_CFENDACK        0x00F0
  62
  63 /* data */
  64 #define IEEE80211_STYPE_DATA                    0x0000
  65 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  66 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  67 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  68 #define IEEE80211_STYPE_NULLFUNC                0x0040
  69 #define IEEE80211_STYPE_CFACK                   0x0050
  70 #define IEEE80211_STYPE_CFPOLL                  0x0060
  71 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  72 #define IEEE80211_STYPE_QOS_DATA                0x0080
  73 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  74 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  75 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  76 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  77 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  78 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  79 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  80
  81
  82 /* miscellaneous IEEE 802.11 constants */
  83 #define IEEE80211_MAX_FRAG_THRESHOLD    2346
  84 #define IEEE80211_MAX_RTS_THRESHOLD     2347
  85 #define IEEE80211_MAX_AID               2007
  86 #define IEEE80211_MAX_TIM_LEN           251
  87 #define IEEE80211_MAX_DATA_LEN          2304
  88 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
  89    6.2.1.1.2.
  90
  91    The figure in section 7.1.2 suggests a body size of up to 2312
  92    bytes is allowed, which is a bit confusing, I suspect this
  93    represents the 2304 bytes of real data, plus a possible 8 bytes of
  94    WEP IV and ICV. (this interpretation suggested by Ramiro Barreiro) */
  95
  96 #define IEEE80211_MAX_SSID_LEN          32
  97
  98 struct ieee80211_hdr {
  99         __le16 frame_control;
 100         __le16 duration_id;
 101         u8 addr1[6];
 102         u8 addr2[6];
 103         u8 addr3[6];
 104         __le16 seq_ctrl;
 105         u8 addr4[6];
 106 } __attribute__ ((packed));
 107
 108
 109 struct ieee80211_mgmt {
 110         __le16 frame_control;
 111         __le16 duration;
 112         u8 da[6];
 113         u8 sa[6];
 114         u8 bssid[6];
 115         __le16 seq_ctrl;
 116         union {
 117                 struct {
 118                         __le16 auth_alg;
 119                         __le16 auth_transaction;
 120                         __le16 status_code;
 121                         /* possibly followed by Challenge text */
 122                         u8 variable[0];
 123                 } __attribute__ ((packed)) auth;
 124                 struct {
 125                         __le16 reason_code;
 126                 } __attribute__ ((packed)) deauth;
 127                 struct {
 128                         __le16 capab_info;
 129                         __le16 listen_interval;
 130                         /* followed by SSID and Supported rates */
 131                         u8 variable[0];
 132                 } __attribute__ ((packed)) assoc_req;
 133                 struct {
 134                         __le16 capab_info;
 135                         __le16 status_code;
 136                         __le16 aid;
 137                         /* followed by Supported rates */
 138                         u8 variable[0];
 139                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 140                 struct {
 141                         __le16 capab_info;
 142                         __le16 listen_interval;
 143                         u8 current_ap[6];
 144                         /* followed by SSID and Supported rates */
 145                         u8 variable[0];
 146                 } __attribute__ ((packed)) reassoc_req;
 147                 struct {
 148                         __le16 reason_code;
 149                 } __attribute__ ((packed)) disassoc;
 150                 struct {
 151                         __le64 timestamp;
 152                         __le16 beacon_int;
 153                         __le16 capab_info;
 154                         /* followed by some of SSID, Supported rates,
 155                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 156                         u8 variable[0];
 157                 } __attribute__ ((packed)) beacon;
 158                 struct {
 159                         /* only variable items: SSID, Supported rates */
 160                         u8 variable[0];
 161                 } __attribute__ ((packed)) probe_req;
 162                 struct {
 163                         __le64 timestamp;
 164                         __le16 beacon_int;
 165                         __le16 capab_info;
 166                         /* followed by some of SSID, Supported rates,
 167                          * FH Params, DS Params, CF Params, IBSS Params */
 168                         u8 variable[0];
 169                 } __attribute__ ((packed)) probe_resp;
 170                 struct {
 171                         u8 category;
 172                         union {
 173                                 struct {
 174                                         u8 action_code;
 175                                         u8 dialog_token;
 176                                         u8 status_code;
 177                                         u8 variable[0];
 178                                 } __attribute__ ((packed)) wme_action;
 179                                 struct{
 180                                         u8 action_code;
 181                                         u8 element_id;
 182                                         u8 length;
 183                                         u8 switch_mode;
 184                                         u8 new_chan;
 185                                         u8 switch_count;
 186                                 } __attribute__((packed)) chan_switch;
 187                         } u;
 188                 } __attribute__ ((packed)) action;
 189         } u;
 190 } __attribute__ ((packed));
 191
 192
 193 /* Control frames */
 194 struct ieee80211_rts {
 195         __le16 frame_control;
 196         __le16 duration;
 197         u8 ra[6];
 198         u8 ta[6];
 199 } __attribute__ ((packed));
 200
 201 struct ieee80211_cts {
 202         __le16 frame_control;
 203         __le16 duration;
 204         u8 ra[6];
 205 } __attribute__ ((packed));
 206
 207
 208 /* Authentication algorithms */
 209 #define WLAN_AUTH_OPEN 0
 210 #define WLAN_AUTH_SHARED_KEY 1
 211 #define WLAN_AUTH_FAST_BSS_TRANSITION 2
 212 #define WLAN_AUTH_LEAP 128
 213
 214 #define WLAN_AUTH_CHALLENGE_LEN 128
 215
 216 #define WLAN_CAPABILITY_ESS             (1<<0)
 217 #define WLAN_CAPABILITY_IBSS            (1<<1)
 218 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
 219 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
 220 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
 221 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
 222 #define WLAN_CAPABILITY_PBCC            (1<<6)
 223 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
 224 /* 802.11h */
 225 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
 226 #define WLAN_CAPABILITY_QOS             (1<<9)
 227 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
 228 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
 229
 230 /* 802.11g ERP information element */
 231 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
 232 #define WLAN_ERP_USE_PROTECTION (1<<1)
 233 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
 234
 235 /* WLAN_ERP_BARKER_PREAMBLE values */
 236 enum {
 237         WLAN_ERP_PREAMBLE_SHORT = 0,
 238         WLAN_ERP_PREAMBLE_LONG = 1,
 239 };
 240
 241 /* Status codes */
 242 enum ieee80211_statuscode {
 243         WLAN_STATUS_SUCCESS = 0,
 244         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
 245         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
 246         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
 247         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
 248         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
 249         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
 250         WLAN_STATUS_CHALLENGE_FAIL = 15,
 251         WLAN_STATUS_AUTH_TIMEOUT = 16,
 252         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
 253         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
 254         /* 802.11b */
 255         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
 256         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
 257         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
 258         /* 802.11h */
 259         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
 260         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
 261         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
 262         /* 802.11g */
 263         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
 264         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
 265         /* 802.11i */
 266         WLAN_STATUS_INVALID_IE = 40,
 267         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
 268         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
 269         WLAN_STATUS_INVALID_AKMP = 43,
 270         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
 271         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
 272         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
 273 };
 274
 275
 276 /* Reason codes */
 277 enum ieee80211_reasoncode {
 278         WLAN_REASON_UNSPECIFIED = 1,
 279         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
 280         WLAN_REASON_DEAUTH_LEAVING = 3,
 281         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
 282         WLAN_REASON_DISASSOC_AP_BUSY = 5,
 283         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
 284         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
 285         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
 286         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
 287         /* 802.11h */
 288         WLAN_REASON_DISASSOC_BAD_POWER = 10,
 289         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
 290         /* 802.11i */
 291         WLAN_REASON_INVALID_IE = 13,
 292         WLAN_REASON_MIC_FAILURE = 14,
 293         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
 294         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
 295         WLAN_REASON_IE_DIFFERENT = 17,
 296         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
 297         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
 298         WLAN_REASON_INVALID_AKMP = 20,
 299         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
 300         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
 301         WLAN_REASON_IEEE8021X_FAILED = 23,
 302         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
 303 };
 304
 305
 306 /* Information Element IDs */
 307 enum ieee80211_eid {
 308         WLAN_EID_SSID = 0,
 309         WLAN_EID_SUPP_RATES = 1,
 310         WLAN_EID_FH_PARAMS = 2,
 311         WLAN_EID_DS_PARAMS = 3,
 312         WLAN_EID_CF_PARAMS = 4,
 313         WLAN_EID_TIM = 5,
 314         WLAN_EID_IBSS_PARAMS = 6,
 315         WLAN_EID_CHALLENGE = 16,
 316         /* 802.11d */
 317         WLAN_EID_COUNTRY = 7,
 318         WLAN_EID_HP_PARAMS = 8,
 319         WLAN_EID_HP_TABLE = 9,
 320         WLAN_EID_REQUEST = 10,
 321         /* 802.11h */
 322         WLAN_EID_PWR_CONSTRAINT = 32,
 323         WLAN_EID_PWR_CAPABILITY = 33,
 324         WLAN_EID_TPC_REQUEST = 34,
 325         WLAN_EID_TPC_REPORT = 35,
 326         WLAN_EID_SUPPORTED_CHANNELS = 36,
 327         WLAN_EID_CHANNEL_SWITCH = 37,
 328         WLAN_EID_MEASURE_REQUEST = 38,
 329         WLAN_EID_MEASURE_REPORT = 39,
 330         WLAN_EID_QUIET = 40,
 331         WLAN_EID_IBSS_DFS = 41,
 332         /* 802.11g */
 333         WLAN_EID_ERP_INFO = 42,
 334         WLAN_EID_EXT_SUPP_RATES = 50,
 335         /* 802.11i */
 336         WLAN_EID_RSN = 48,
 337         WLAN_EID_WPA = 221,
 338         WLAN_EID_GENERIC = 221,
 339         WLAN_EID_VENDOR_SPECIFIC = 221,
 340         WLAN_EID_QOS_PARAMETER = 222
 341 };
 342
 343 /* cipher suite selectors */
 344 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
 345 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
 346 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
 347 /* reserved:                            0x000FAC03 */
 348 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
 349 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
 350
 351 #define WLAN_MAX_KEY_LEN                32
 352
 353 #endif /* IEEE80211_H */