include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef __LINUX_IEEE80211_H
  16 #define __LINUX_IEEE80211_H
  17
  18 /*
  19  * DS bit usage
  20  *
  21  * TA = transmitter address
  22  * RA = receiver address
  23  * DA = destination address
  24  * SA = source address
  25  *
  26  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  27  * -----------------------------------------------------------------
  28  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  29  *  0       1       DA      BSSID   SA      -       AP -> STA
  30  *  1       0       BSSID   SA      DA      -       AP <- STA
  31  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  32  */
  33
  34 #define FCS_LEN 4
  35
  36 #define IEEE80211_FCTL_VERS             0x0003
  37 #define IEEE80211_FCTL_FTYPE            0x000c
  38 #define IEEE80211_FCTL_STYPE            0x00f0
  39 #define IEEE80211_FCTL_TODS             0x0100
  40 #define IEEE80211_FCTL_FROMDS           0x0200
  41 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  42 #define IEEE80211_FCTL_RETRY            0x0800
  43 #define IEEE80211_FCTL_PM               0x1000
  44 #define IEEE80211_FCTL_MOREDATA         0x2000
  45 #define IEEE80211_FCTL_PROTECTED        0x4000
  46 #define IEEE80211_FCTL_ORDER            0x8000
  47
  48 #define IEEE80211_SCTL_FRAG             0x000F
  49 #define IEEE80211_SCTL_SEQ              0xFFF0
  50
  51 #define IEEE80211_FTYPE_MGMT            0x0000
  52 #define IEEE80211_FTYPE_CTL             0x0004
  53 #define IEEE80211_FTYPE_DATA            0x0008
  54
  55 /* management */
  56 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  57 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  58 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  59 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  60 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  61 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  62 #define IEEE80211_STYPE_BEACON          0x0080
  63 #define IEEE80211_STYPE_ATIM            0x0090
  64 #define IEEE80211_STYPE_DISASSOC        0x00A0
  65 #define IEEE80211_STYPE_AUTH            0x00B0
  66 #define IEEE80211_STYPE_DEAUTH          0x00C0
  67 #define IEEE80211_STYPE_ACTION          0x00D0
  68
  69 /* control */
  70 #define IEEE80211_STYPE_BACK_REQ        0x0080
  71 #define IEEE80211_STYPE_BACK            0x0090
  72 #define IEEE80211_STYPE_PSPOLL          0x00A0
  73 #define IEEE80211_STYPE_RTS             0x00B0
  74 #define IEEE80211_STYPE_CTS             0x00C0
  75 #define IEEE80211_STYPE_ACK             0x00D0
  76 #define IEEE80211_STYPE_CFEND           0x00E0
  77 #define IEEE80211_STYPE_CFENDACK        0x00F0
  78
  79 /* data */
  80 #define IEEE80211_STYPE_DATA                    0x0000
  81 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  82 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  83 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  84 #define IEEE80211_STYPE_NULLFUNC                0x0040
  85 #define IEEE80211_STYPE_CFACK                   0x0050
  86 #define IEEE80211_STYPE_CFPOLL                  0x0060
  87 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  88 #define IEEE80211_STYPE_QOS_DATA                0x0080
  89 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  90 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  91 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  92 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  93 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  94 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  95 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  96
  97
  98 /* miscellaneous IEEE 802.11 constants */
  99 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 100 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 101 #define IEEE80211_MAX_AID               2007
 102 #define IEEE80211_MAX_TIM_LEN           251
 103 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 104    6.2.1.1.2.
 105
 106    802.11e clarifies the figure in section 7.1.2. The frame body is
 107    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 108 #define IEEE80211_MAX_DATA_LEN          2304
 109 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 110 #define IEEE80211_MAX_FRAME_LEN         2352
 111
 112 #define IEEE80211_MAX_SSID_LEN          32
 113
 114 #define IEEE80211_MAX_MESH_ID_LEN       32
 115
 116 #define IEEE80211_QOS_CTL_LEN           2
 117 /* 1d tag mask */
 118 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 119 /* TID mask */
 120 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 121 /* EOSP */
 122 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 123 /* ACK policy */
 124 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 125 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 126 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 127 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 128 /* A-MSDU 802.11n */
 129 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 130
 131 /* U-APSD queue for WMM IEs sent by AP */
 132 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 133 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 134
 135 /* U-APSD queues for WMM IEs sent by STA */
 136 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 137 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 138 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 139 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 140 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 141
 142 /* U-APSD max SP length for WMM IEs sent by STA */
 143 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 144 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 145 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 146 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 147 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 148 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 149
 150 #define IEEE80211_HT_CTL_LEN            4
 151
 152 struct ieee80211_hdr {
 153         __le16 frame_control;
 154         __le16 duration_id;
 155         u8 addr1[6];
 156         u8 addr2[6];
 157         u8 addr3[6];
 158         __le16 seq_ctrl;
 159         u8 addr4[6];
 160 } __attribute__ ((packed));
 161
 162 struct ieee80211_hdr_3addr {
 163         __le16 frame_control;
 164         __le16 duration_id;
 165         u8 addr1[6];
 166         u8 addr2[6];
 167         u8 addr3[6];
 168         __le16 seq_ctrl;
 169 } __attribute__ ((packed));
 170
 171 struct ieee80211_qos_hdr {
 172         __le16 frame_control;
 173         __le16 duration_id;
 174         u8 addr1[6];
 175         u8 addr2[6];
 176         u8 addr3[6];
 177         __le16 seq_ctrl;
 178         __le16 qos_ctrl;
 179 } __attribute__ ((packed));
 180
 181 /**
 182  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 183  * @fc: frame control bytes in little-endian byteorder
 184  */
 185 static inline int ieee80211_has_tods(__le16 fc)
 186 {
 187         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 188 }
 189
 190 /**
 191  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 192  * @fc: frame control bytes in little-endian byteorder
 193  */
 194 static inline int ieee80211_has_fromds(__le16 fc)
 195 {
 196         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 197 }
 198
 199 /**
 200  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 201  * @fc: frame control bytes in little-endian byteorder
 202  */
 203 static inline int ieee80211_has_a4(__le16 fc)
 204 {
 205         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 206         return (fc & tmp) == tmp;
 207 }
 208
 209 /**
 210  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 211  * @fc: frame control bytes in little-endian byteorder
 212  */
 213 static inline int ieee80211_has_morefrags(__le16 fc)
 214 {
 215         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 216 }
 217
 218 /**
 219  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 220  * @fc: frame control bytes in little-endian byteorder
 221  */
 222 static inline int ieee80211_has_retry(__le16 fc)
 223 {
 224         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 225 }
 226
 227 /**
 228  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 229  * @fc: frame control bytes in little-endian byteorder
 230  */
 231 static inline int ieee80211_has_pm(__le16 fc)
 232 {
 233         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 234 }
 235
 236 /**
 237  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 238  * @fc: frame control bytes in little-endian byteorder
 239  */
 240 static inline int ieee80211_has_moredata(__le16 fc)
 241 {
 242         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 243 }
 244
 245 /**
 246  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 247  * @fc: frame control bytes in little-endian byteorder
 248  */
 249 static inline int ieee80211_has_protected(__le16 fc)
 250 {
 251         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 252 }
 253
 254 /**
 255  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 256  * @fc: frame control bytes in little-endian byteorder
 257  */
 258 static inline int ieee80211_has_order(__le16 fc)
 259 {
 260         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 261 }
 262
 263 /**
 264  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 265  * @fc: frame control bytes in little-endian byteorder
 266  */
 267 static inline int ieee80211_is_mgmt(__le16 fc)
 268 {
 269         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 270                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 271 }
 272
 273 /**
 274  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 275  * @fc: frame control bytes in little-endian byteorder
 276  */
 277 static inline int ieee80211_is_ctl(__le16 fc)
 278 {
 279         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 280                cpu_to_le16(IEEE80211_FTYPE_CTL);
 281 }
 282
 283 /**
 284  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 285  * @fc: frame control bytes in little-endian byteorder
 286  */
 287 static inline int ieee80211_is_data(__le16 fc)
 288 {
 289         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 290                cpu_to_le16(IEEE80211_FTYPE_DATA);
 291 }
 292
 293 /**
 294  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 295  * @fc: frame control bytes in little-endian byteorder
 296  */
 297 static inline int ieee80211_is_data_qos(__le16 fc)
 298 {
 299         /*
 300          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 301          * to check the one bit
 302          */
 303         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 304                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 305 }
 306
 307 /**
 308  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 309  * @fc: frame control bytes in little-endian byteorder
 310  */
 311 static inline int ieee80211_is_data_present(__le16 fc)
 312 {
 313         /*
 314          * mask with 0x40 and test that that bit is clear to only return true
 315          * for the data-containing substypes.
 316          */
 317         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 318                cpu_to_le16(IEEE80211_FTYPE_DATA);
 319 }
 320
 321 /**
 322  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 323  * @fc: frame control bytes in little-endian byteorder
 324  */
 325 static inline int ieee80211_is_assoc_req(__le16 fc)
 326 {
 327         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 328                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 329 }
 330
 331 /**
 332  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 333  * @fc: frame control bytes in little-endian byteorder
 334  */
 335 static inline int ieee80211_is_assoc_resp(__le16 fc)
 336 {
 337         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 338                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 339 }
 340
 341 /**
 342  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 343  * @fc: frame control bytes in little-endian byteorder
 344  */
 345 static inline int ieee80211_is_reassoc_req(__le16 fc)
 346 {
 347         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 348                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 349 }
 350
 351 /**
 352  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 353  * @fc: frame control bytes in little-endian byteorder
 354  */
 355 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 356 {
 357         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 358                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 359 }
 360
 361 /**
 362  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 363  * @fc: frame control bytes in little-endian byteorder
 364  */
 365 static inline int ieee80211_is_probe_req(__le16 fc)
 366 {
 367         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 368                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 369 }
 370
 371 /**
 372  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 373  * @fc: frame control bytes in little-endian byteorder
 374  */
 375 static inline int ieee80211_is_probe_resp(__le16 fc)
 376 {
 377         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 378                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 379 }
 380
 381 /**
 382  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 383  * @fc: frame control bytes in little-endian byteorder
 384  */
 385 static inline int ieee80211_is_beacon(__le16 fc)
 386 {
 387         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 388                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 389 }
 390
 391 /**
 392  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 393  * @fc: frame control bytes in little-endian byteorder
 394  */
 395 static inline int ieee80211_is_atim(__le16 fc)
 396 {
 397         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 398                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 399 }
 400
 401 /**
 402  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 403  * @fc: frame control bytes in little-endian byteorder
 404  */
 405 static inline int ieee80211_is_disassoc(__le16 fc)
 406 {
 407         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 408                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 409 }
 410
 411 /**
 412  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 413  * @fc: frame control bytes in little-endian byteorder
 414  */
 415 static inline int ieee80211_is_auth(__le16 fc)
 416 {
 417         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 418                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 419 }
 420
 421 /**
 422  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 423  * @fc: frame control bytes in little-endian byteorder
 424  */
 425 static inline int ieee80211_is_deauth(__le16 fc)
 426 {
 427         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 428                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 429 }
 430
 431 /**
 432  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 433  * @fc: frame control bytes in little-endian byteorder
 434  */
 435 static inline int ieee80211_is_action(__le16 fc)
 436 {
 437         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 438                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 439 }
 440
 441 /**
 442  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 443  * @fc: frame control bytes in little-endian byteorder
 444  */
 445 static inline int ieee80211_is_back_req(__le16 fc)
 446 {
 447         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 448                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 449 }
 450
 451 /**
 452  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 453  * @fc: frame control bytes in little-endian byteorder
 454  */
 455 static inline int ieee80211_is_back(__le16 fc)
 456 {
 457         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 458                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 459 }
 460
 461 /**
 462  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 463  * @fc: frame control bytes in little-endian byteorder
 464  */
 465 static inline int ieee80211_is_pspoll(__le16 fc)
 466 {
 467         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 468                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 469 }
 470
 471 /**
 472  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 473  * @fc: frame control bytes in little-endian byteorder
 474  */
 475 static inline int ieee80211_is_rts(__le16 fc)
 476 {
 477         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 478                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 479 }
 480
 481 /**
 482  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 483  * @fc: frame control bytes in little-endian byteorder
 484  */
 485 static inline int ieee80211_is_cts(__le16 fc)
 486 {
 487         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 488                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 489 }
 490
 491 /**
 492  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 493  * @fc: frame control bytes in little-endian byteorder
 494  */
 495 static inline int ieee80211_is_ack(__le16 fc)
 496 {
 497         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 498                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 499 }
 500
 501 /**
 502  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 503  * @fc: frame control bytes in little-endian byteorder
 504  */
 505 static inline int ieee80211_is_cfend(__le16 fc)
 506 {
 507         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 508                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 509 }
 510
 511 /**
 512  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 513  * @fc: frame control bytes in little-endian byteorder
 514  */
 515 static inline int ieee80211_is_cfendack(__le16 fc)
 516 {
 517         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 518                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 519 }
 520
 521 /**
 522  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 523  * @fc: frame control bytes in little-endian byteorder
 524  */
 525 static inline int ieee80211_is_nullfunc(__le16 fc)
 526 {
 527         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 528                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 529 }
 530
 531 /**
 532  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 533  * @fc: frame control bytes in little-endian byteorder
 534  */
 535 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 536 {
 537         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 538                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 539 }
 540
 541 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 542 {
 543         unsigned int hdrlen = 24;
 544
 545         if (ieee80211_has_a4(fc))
 546                 hdrlen = 30;
 547
 548         if (ieee80211_is_data_qos(fc)) {
 549                 hdrlen += IEEE80211_QOS_CTL_LEN;
 550                 if (ieee80211_has_order(fc))
 551                         hdrlen += IEEE80211_HT_CTL_LEN;
 552         }
 553
 554         return hdrlen;
 555 }
 556
 557 struct ieee80211s_hdr {
 558         u8 flags;
 559         u8 ttl;
 560         __le32 seqnum;
 561         u8 eaddr1[6];
 562         u8 eaddr2[6];
 563 } __attribute__ ((packed));
 564
 565 /* Mesh flags */
 566 #define MESH_FLAGS_AE_A4        0x1
 567 #define MESH_FLAGS_AE_A5_A6     0x2
 568 #define MESH_FLAGS_AE           0x3
 569 #define MESH_FLAGS_PS_DEEP      0x4
 570
 571 /**
 572  * struct ieee80211_quiet_ie
 573  *
 574  * This structure refers to "Quiet information element"
 575  */
 576 struct ieee80211_quiet_ie {
 577         u8 count;
 578         u8 period;
 579         __le16 duration;
 580         __le16 offset;
 581 } __attribute__ ((packed));
 582
 583 /**
 584  * struct ieee80211_msrment_ie
 585  *
 586  * This structure refers to "Measurement Request/Report information element"
 587  */
 588 struct ieee80211_msrment_ie {
 589         u8 token;
 590         u8 mode;
 591         u8 type;
 592         u8 request[0];
 593 } __attribute__ ((packed));
 594
 595 /**
 596  * struct ieee80211_channel_sw_ie
 597  *
 598  * This structure refers to "Channel Switch Announcement information element"
 599  */
 600 struct ieee80211_channel_sw_ie {
 601         u8 mode;
 602         u8 new_ch_num;
 603         u8 count;
 604 } __attribute__ ((packed));
 605
 606 /**
 607  * struct ieee80211_tim
 608  *
 609  * This structure refers to "Traffic Indication Map information element"
 610  */
 611 struct ieee80211_tim_ie {
 612         u8 dtim_count;
 613         u8 dtim_period;
 614         u8 bitmap_ctrl;
 615         /* variable size: 1 - 251 bytes */
 616         u8 virtual_map[1];
 617 } __attribute__ ((packed));
 618
 619 /**
 620  * struct ieee80211_meshconf_ie
 621  *
 622  * This structure refers to "Mesh Configuration information element"
 623  */
 624 struct ieee80211_meshconf_ie {
 625         u8 meshconf_psel;
 626         u8 meshconf_pmetric;
 627         u8 meshconf_congest;
 628         u8 meshconf_synch;
 629         u8 meshconf_auth;
 630         u8 meshconf_form;
 631         u8 meshconf_cap;
 632 } __attribute__ ((packed));
 633
 634 /**
 635  * struct ieee80211_rann_ie
 636  *
 637  * This structure refers to "Root Announcement information element"
 638  */
 639 struct ieee80211_rann_ie {
 640         u8 rann_flags;
 641         u8 rann_hopcount;
 642         u8 rann_ttl;
 643         u8 rann_addr[6];
 644         u32 rann_seq;
 645         u32 rann_metric;
 646 } __attribute__ ((packed));
 647
 648 #define WLAN_SA_QUERY_TR_ID_LEN 2
 649
 650 struct ieee80211_mgmt {
 651         __le16 frame_control;
 652         __le16 duration;
 653         u8 da[6];
 654         u8 sa[6];
 655         u8 bssid[6];
 656         __le16 seq_ctrl;
 657         union {
 658                 struct {
 659                         __le16 auth_alg;
 660                         __le16 auth_transaction;
 661                         __le16 status_code;
 662                         /* possibly followed by Challenge text */
 663                         u8 variable[0];
 664                 } __attribute__ ((packed)) auth;
 665                 struct {
 666                         __le16 reason_code;
 667                 } __attribute__ ((packed)) deauth;
 668                 struct {
 669                         __le16 capab_info;
 670                         __le16 listen_interval;
 671                         /* followed by SSID and Supported rates */
 672                         u8 variable[0];
 673                 } __attribute__ ((packed)) assoc_req;
 674                 struct {
 675                         __le16 capab_info;
 676                         __le16 status_code;
 677                         __le16 aid;
 678                         /* followed by Supported rates */
 679                         u8 variable[0];
 680                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 681                 struct {
 682                         __le16 capab_info;
 683                         __le16 listen_interval;
 684                         u8 current_ap[6];
 685                         /* followed by SSID and Supported rates */
 686                         u8 variable[0];
 687                 } __attribute__ ((packed)) reassoc_req;
 688                 struct {
 689                         __le16 reason_code;
 690                 } __attribute__ ((packed)) disassoc;
 691                 struct {
 692                         __le64 timestamp;
 693                         __le16 beacon_int;
 694                         __le16 capab_info;
 695                         /* followed by some of SSID, Supported rates,
 696                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 697                         u8 variable[0];
 698                 } __attribute__ ((packed)) beacon;
 699                 struct {
 700                         /* only variable items: SSID, Supported rates */
 701                         u8 variable[0];
 702                 } __attribute__ ((packed)) probe_req;
 703                 struct {
 704                         __le64 timestamp;
 705                         __le16 beacon_int;
 706                         __le16 capab_info;
 707                         /* followed by some of SSID, Supported rates,
 708                          * FH Params, DS Params, CF Params, IBSS Params */
 709                         u8 variable[0];
 710                 } __attribute__ ((packed)) probe_resp;
 711                 struct {
 712                         u8 category;
 713                         union {
 714                                 struct {
 715                                         u8 action_code;
 716                                         u8 dialog_token;
 717                                         u8 status_code;
 718                                         u8 variable[0];
 719                                 } __attribute__ ((packed)) wme_action;
 720                                 struct{
 721                                         u8 action_code;
 722                                         u8 element_id;
 723                                         u8 length;
 724                                         struct ieee80211_channel_sw_ie sw_elem;
 725                                 } __attribute__((packed)) chan_switch;
 726                                 struct{
 727                                         u8 action_code;
 728                                         u8 dialog_token;
 729                                         u8 element_id;
 730                                         u8 length;
 731                                         struct ieee80211_msrment_ie msr_elem;
 732                                 } __attribute__((packed)) measurement;
 733                                 struct{
 734                                         u8 action_code;
 735                                         u8 dialog_token;
 736                                         __le16 capab;
 737                                         __le16 timeout;
 738                                         __le16 start_seq_num;
 739                                 } __attribute__((packed)) addba_req;
 740                                 struct{
 741                                         u8 action_code;
 742                                         u8 dialog_token;
 743                                         __le16 status;
 744                                         __le16 capab;
 745                                         __le16 timeout;
 746                                 } __attribute__((packed)) addba_resp;
 747                                 struct{
 748                                         u8 action_code;
 749                                         __le16 params;
 750                                         __le16 reason_code;
 751                                 } __attribute__((packed)) delba;
 752                                 struct {
 753                                         u8 action_code;
 754                                         u8 variable[0];
 755                                 } __attribute__((packed)) self_prot;
 756                                 struct{
 757                                         u8 action_code;
 758                                         u8 variable[0];
 759                                 } __attribute__((packed)) mesh_action;
 760                                 struct {
 761                                         u8 action;
 762                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 763                                 } __attribute__ ((packed)) sa_query;
 764                                 struct {
 765                                         u8 action;
 766                                         u8 smps_control;
 767                                 } __attribute__ ((packed)) ht_smps;
 768                         } u;
 769                 } __attribute__ ((packed)) action;
 770         } u;
 771 } __attribute__ ((packed));
 772
 773 /* mgmt header + 1 byte category code */
 774 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 775
 776
 777 /* Management MIC information element (IEEE 802.11w) */
 778 struct ieee80211_mmie {
 779         u8 element_id;
 780         u8 length;
 781         __le16 key_id;
 782         u8 sequence_number[6];
 783         u8 mic[8];
 784 } __attribute__ ((packed));
 785
 786 /* Control frames */
 787 struct ieee80211_rts {
 788         __le16 frame_control;
 789         __le16 duration;
 790         u8 ra[6];
 791         u8 ta[6];
 792 } __attribute__ ((packed));
 793
 794 struct ieee80211_cts {
 795         __le16 frame_control;
 796         __le16 duration;
 797         u8 ra[6];
 798 } __attribute__ ((packed));
 799
 800 struct ieee80211_pspoll {
 801         __le16 frame_control;
 802         __le16 aid;
 803         u8 bssid[6];
 804         u8 ta[6];
 805 } __attribute__ ((packed));
 806
 807 /**
 808  * struct ieee80211_bar - HT Block Ack Request
 809  *
 810  * This structure refers to "HT BlockAckReq" as
 811  * described in 802.11n draft section 7.2.1.7.1
 812  */
 813 struct ieee80211_bar {
 814         __le16 frame_control;
 815         __le16 duration;
 816         __u8 ra[6];
 817         __u8 ta[6];
 818         __le16 control;
 819         __le16 start_seq_num;
 820 } __attribute__((packed)) __aligned(4);
 821
 822 /* 802.11 BA(R) control masks */
 823 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 824 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 825 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 826 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 827 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 828
 829 /**
 830  * struct ieee80211_ba - HT Block Ack
 831  *
 832  * This structure refers to "HT BlockAck" as
 833  * described in 802.11n draft section 7.2.1.8.1
 834  */
 835 struct ieee80211_ba {
 836         __le16 frame_control;
 837         __le16 duration;
 838         u8 ra[6];
 839         u8 ta[6];
 840         __le16 control;
 841
 842         __le16 start_seq_num;
 843         u8 bitmap[8];
 844 } __attribute__((packed));
 845
 846 #define IEEE80211_HT_MCS_MASK_LEN               10
 847
 848 /**
 849  * struct ieee80211_mcs_info - MCS information
 850  * @rx_mask: RX mask
 851  * @rx_highest: highest supported RX rate. If set represents
 852  *      the highest supported RX data rate in units of 1 Mbps.
 853  *      If this field is 0 this value should not be used to
 854  *      consider the highest RX data rate supported.
 855  * @tx_params: TX parameters
 856  */
 857 struct ieee80211_mcs_info {
 858         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 859         __le16 rx_highest;
 860         u8 tx_params;
 861         u8 reserved[3];
 862 } __attribute__((packed));
 863
 864 /* 802.11n HT capability MSC set */
 865 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 866 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 867 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 868 /* value 0 == 1 stream etc */
 869 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 870 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 871 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 872 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 873
 874 /*
 875  * 802.11n D5.0 20.3.5 / 20.6 says:
 876  * - indices 0 to 7 and 32 are single spatial stream
 877  * - 8 to 31 are multiple spatial streams using equal modulation
 878  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 879  * - remainder are multiple spatial streams using unequal modulation
 880  */
 881 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 882 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 883         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 884
 885 /**
 886  * struct ieee80211_ht_cap - HT capabilities
 887  *
 888  * This structure is the "HT capabilities element" as
 889  * described in 802.11n D5.0 7.3.2.57
 890  */
 891 struct ieee80211_ht_cap {
 892         __le16 cap_info;
 893         u8 ampdu_params_info;
 894
 895         /* 16 bytes MCS information */
 896         struct ieee80211_mcs_info mcs;
 897
 898         __le16 extended_ht_cap_info;
 899         __le32 tx_BF_cap_info;
 900         u8 antenna_selection_info;
 901 } __attribute__ ((packed));
 902
 903 /* 802.11n HT capabilities masks (for cap_info) */
 904 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 905 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 906 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 907 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 908 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 909 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 910 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 911 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 912 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 913 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 914 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 915 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 916 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 917 #define IEEE80211_HT_CAP_RESERVED               0x2000
 918 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 919 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 920
 921 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 922 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 923 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 924 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 925 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 926 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 927 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 928 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 929
 930 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 931 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 932 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 933 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 934
 935 /*
 936  * Maximum length of AMPDU that the STA can receive.
 937  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 938  */
 939 enum ieee80211_max_ampdu_length_exp {
 940         IEEE80211_HT_MAX_AMPDU_8K = 0,
 941         IEEE80211_HT_MAX_AMPDU_16K = 1,
 942         IEEE80211_HT_MAX_AMPDU_32K = 2,
 943         IEEE80211_HT_MAX_AMPDU_64K = 3
 944 };
 945
 946 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 947
 948 /* Minimum MPDU start spacing */
 949 enum ieee80211_min_mpdu_spacing {
 950         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 951         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 952         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 953         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 954         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 955         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 956         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 957         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 958 };
 959
 960 /**
 961  * struct ieee80211_ht_info - HT information
 962  *
 963  * This structure is the "HT information element" as
 964  * described in 802.11n D5.0 7.3.2.58
 965  */
 966 struct ieee80211_ht_info {
 967         u8 control_chan;
 968         u8 ht_param;
 969         __le16 operation_mode;
 970         __le16 stbc_param;
 971         u8 basic_set[16];
 972 } __attribute__ ((packed));
 973
 974 /* for ht_param */
 975 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
 976 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
 977 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
 978 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
 979 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
 980 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
 981 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
 982 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
 983
 984 /* for operation_mode */
 985 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
 986 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
 987 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
 988 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
 989 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
 990 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
 991 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
 992
 993 /* for stbc_param */
 994 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
 995 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
 996 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
 997 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
 998 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
 999 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1000
1001
1002 /* block-ack parameters */
1003 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1004 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1005 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1006 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1007 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1008
1009 /*
1010  * A-PMDU buffer sizes
1011  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1012  */
1013 #define IEEE80211_MIN_AMPDU_BUF 0x8
1014 #define IEEE80211_MAX_AMPDU_BUF 0x40
1015
1016
1017 /* Spatial Multiplexing Power Save Modes (for capability) */
1018 #define WLAN_HT_CAP_SM_PS_STATIC        0
1019 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1020 #define WLAN_HT_CAP_SM_PS_INVALID       2
1021 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1022
1023 /* for SM power control field lower two bits */
1024 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1025 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1026 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1027
1028 /* Authentication algorithms */
1029 #define WLAN_AUTH_OPEN 0
1030 #define WLAN_AUTH_SHARED_KEY 1
1031 #define WLAN_AUTH_FT 2
1032 #define WLAN_AUTH_SAE 3
1033 #define WLAN_AUTH_LEAP 128
1034
1035 #define WLAN_AUTH_CHALLENGE_LEN 128
1036
1037 #define WLAN_CAPABILITY_ESS             (1<<0)
1038 #define WLAN_CAPABILITY_IBSS            (1<<1)
1039
1040 /*
1041  * A mesh STA sets the ESS and IBSS capability bits to zero.
1042  * however, this holds true for p2p probe responses (in the p2p_find
1043  * phase) as well.
1044  */
1045 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1046         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1047
1048 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1049 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1050 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1051 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1052 #define WLAN_CAPABILITY_PBCC            (1<<6)
1053 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1054
1055 /* 802.11h */
1056 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1057 #define WLAN_CAPABILITY_QOS             (1<<9)
1058 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1059 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1060 /* measurement */
1061 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1062 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1063 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1064
1065 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1066 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1067 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1068
1069
1070 /* 802.11g ERP information element */
1071 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1072 #define WLAN_ERP_USE_PROTECTION (1<<1)
1073 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1074
1075 /* WLAN_ERP_BARKER_PREAMBLE values */
1076 enum {
1077         WLAN_ERP_PREAMBLE_SHORT = 0,
1078         WLAN_ERP_PREAMBLE_LONG = 1,
1079 };
1080
1081 /* Status codes */
1082 enum ieee80211_statuscode {
1083         WLAN_STATUS_SUCCESS = 0,
1084         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1085         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1086         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1087         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1088         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1089         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1090         WLAN_STATUS_CHALLENGE_FAIL = 15,
1091         WLAN_STATUS_AUTH_TIMEOUT = 16,
1092         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1093         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1094         /* 802.11b */
1095         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1096         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1097         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1098         /* 802.11h */
1099         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1100         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1101         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1102         /* 802.11g */
1103         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1104         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1105         /* 802.11w */
1106         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1107         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1108         /* 802.11i */
1109         WLAN_STATUS_INVALID_IE = 40,
1110         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1111         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1112         WLAN_STATUS_INVALID_AKMP = 43,
1113         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1114         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1115         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1116         /* 802.11e */
1117         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1118         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1119         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1120         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1121         WLAN_STATUS_REQUEST_DECLINED = 37,
1122         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1123         WLAN_STATUS_CHANGE_TSPEC = 39,
1124         WLAN_STATUS_WAIT_TS_DELAY = 47,
1125         WLAN_STATUS_NO_DIRECT_LINK = 48,
1126         WLAN_STATUS_STA_NOT_PRESENT = 49,
1127         WLAN_STATUS_STA_NOT_QSTA = 50,
1128         /* 802.11s */
1129         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1130         WLAN_STATUS_FCG_NOT_SUPP = 78,
1131         WLAN_STATUS_STA_NO_TBTT = 78,
1132 };
1133
1134
1135 /* Reason codes */
1136 enum ieee80211_reasoncode {
1137         WLAN_REASON_UNSPECIFIED = 1,
1138         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1139         WLAN_REASON_DEAUTH_LEAVING = 3,
1140         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1141         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1142         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1143         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1144         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1145         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1146         /* 802.11h */
1147         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1148         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1149         /* 802.11i */
1150         WLAN_REASON_INVALID_IE = 13,
1151         WLAN_REASON_MIC_FAILURE = 14,
1152         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1153         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1154         WLAN_REASON_IE_DIFFERENT = 17,
1155         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1156         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1157         WLAN_REASON_INVALID_AKMP = 20,
1158         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1159         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1160         WLAN_REASON_IEEE8021X_FAILED = 23,
1161         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1162         /* 802.11e */
1163         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1164         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1165         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1166         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1167         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1168         WLAN_REASON_QSTA_NOT_USE = 37,
1169         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1170         WLAN_REASON_QSTA_TIMEOUT = 39,
1171         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1172         /* 802.11s */
1173         WLAN_REASON_MESH_PEER_CANCELED = 52,
1174         WLAN_REASON_MESH_MAX_PEERS = 53,
1175         WLAN_REASON_MESH_CONFIG = 54,
1176         WLAN_REASON_MESH_CLOSE = 55,
1177         WLAN_REASON_MESH_MAX_RETRIES = 56,
1178         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1179         WLAN_REASON_MESH_INVALID_GTK = 58,
1180         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1181         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1182         WLAN_REASON_MESH_PATH_ERROR = 61,
1183         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1184         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1185         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1186         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1187         WLAN_REASON_MESH_CHAN = 66,
1188 };
1189
1190
1191 /* Information Element IDs */
1192 enum ieee80211_eid {
1193         WLAN_EID_SSID = 0,
1194         WLAN_EID_SUPP_RATES = 1,
1195         WLAN_EID_FH_PARAMS = 2,
1196         WLAN_EID_DS_PARAMS = 3,
1197         WLAN_EID_CF_PARAMS = 4,
1198         WLAN_EID_TIM = 5,
1199         WLAN_EID_IBSS_PARAMS = 6,
1200         WLAN_EID_CHALLENGE = 16,
1201
1202         WLAN_EID_COUNTRY = 7,
1203         WLAN_EID_HP_PARAMS = 8,
1204         WLAN_EID_HP_TABLE = 9,
1205         WLAN_EID_REQUEST = 10,
1206
1207         WLAN_EID_QBSS_LOAD = 11,
1208         WLAN_EID_EDCA_PARAM_SET = 12,
1209         WLAN_EID_TSPEC = 13,
1210         WLAN_EID_TCLAS = 14,
1211         WLAN_EID_SCHEDULE = 15,
1212         WLAN_EID_TS_DELAY = 43,
1213         WLAN_EID_TCLAS_PROCESSING = 44,
1214         WLAN_EID_QOS_CAPA = 46,
1215         /* 802.11s */
1216         WLAN_EID_MESH_CONFIG = 113,
1217         WLAN_EID_MESH_ID = 114,
1218         WLAN_EID_LINK_METRIC_REPORT = 115,
1219         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1220         WLAN_EID_PEER_MGMT = 117,
1221         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1222         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1223         WLAN_EID_BEACON_TIMING = 120,
1224         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1225         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1226         WLAN_EID_MCCAOP_ADVERT = 123,
1227         WLAN_EID_MCCAOP_TEARDOWN = 124,
1228         WLAN_EID_GANN = 125,
1229         WLAN_EID_RANN = 126,
1230         WLAN_EID_PREQ = 130,
1231         WLAN_EID_PREP = 131,
1232         WLAN_EID_PERR = 132,
1233         WLAN_EID_PXU = 137,
1234         WLAN_EID_PXUC = 138,
1235         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1236         WLAN_EID_MIC = 140,
1237
1238         WLAN_EID_PWR_CONSTRAINT = 32,
1239         WLAN_EID_PWR_CAPABILITY = 33,
1240         WLAN_EID_TPC_REQUEST = 34,
1241         WLAN_EID_TPC_REPORT = 35,
1242         WLAN_EID_SUPPORTED_CHANNELS = 36,
1243         WLAN_EID_CHANNEL_SWITCH = 37,
1244         WLAN_EID_MEASURE_REQUEST = 38,
1245         WLAN_EID_MEASURE_REPORT = 39,
1246         WLAN_EID_QUIET = 40,
1247         WLAN_EID_IBSS_DFS = 41,
1248
1249         WLAN_EID_ERP_INFO = 42,
1250         WLAN_EID_EXT_SUPP_RATES = 50,
1251
1252         WLAN_EID_HT_CAPABILITY = 45,
1253         WLAN_EID_HT_INFORMATION = 61,
1254
1255         WLAN_EID_RSN = 48,
1256         WLAN_EID_MMIE = 76,
1257         WLAN_EID_WPA = 221,
1258         WLAN_EID_GENERIC = 221,
1259         WLAN_EID_VENDOR_SPECIFIC = 221,
1260         WLAN_EID_QOS_PARAMETER = 222,
1261
1262         WLAN_EID_AP_CHAN_REPORT = 51,
1263         WLAN_EID_NEIGHBOR_REPORT = 52,
1264         WLAN_EID_RCPI = 53,
1265         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1266         WLAN_EID_ANTENNA_INFO = 64,
1267         WLAN_EID_RSNI = 65,
1268         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1269         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1270         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1271         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1272         WLAN_EID_MULTIPLE_BSSID = 71,
1273         WLAN_EID_BSS_COEX_2040 = 72,
1274         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1275         WLAN_EID_EXT_CAPABILITY = 127,
1276
1277         WLAN_EID_MOBILITY_DOMAIN = 54,
1278         WLAN_EID_FAST_BSS_TRANSITION = 55,
1279         WLAN_EID_TIMEOUT_INTERVAL = 56,
1280         WLAN_EID_RIC_DATA = 57,
1281         WLAN_EID_RIC_DESCRIPTOR = 75,
1282
1283         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1284         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1285         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1286 };
1287
1288 /* Action category code */
1289 enum ieee80211_category {
1290         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1291         WLAN_CATEGORY_QOS = 1,
1292         WLAN_CATEGORY_DLS = 2,
1293         WLAN_CATEGORY_BACK = 3,
1294         WLAN_CATEGORY_PUBLIC = 4,
1295         WLAN_CATEGORY_HT = 7,
1296         WLAN_CATEGORY_SA_QUERY = 8,
1297         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1298         WLAN_CATEGORY_MESH_ACTION = 13,
1299         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1300         WLAN_CATEGORY_SELF_PROTECTED = 15,
1301         WLAN_CATEGORY_WMM = 17,
1302         /* TODO: remove MESH_PATH_SEL after mesh is updated
1303          * to current 802.11s draft  */
1304         WLAN_CATEGORY_MESH_PATH_SEL = 32,
1305         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1306         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1307 };
1308
1309 /* SPECTRUM_MGMT action code */
1310 enum ieee80211_spectrum_mgmt_actioncode {
1311         WLAN_ACTION_SPCT_MSR_REQ = 0,
1312         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1313         WLAN_ACTION_SPCT_TPC_REQ = 2,
1314         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1315         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1316 };
1317
1318 /* HT action codes */
1319 enum ieee80211_ht_actioncode {
1320         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1321         WLAN_HT_ACTION_SMPS = 1,
1322         WLAN_HT_ACTION_PSMP = 2,
1323         WLAN_HT_ACTION_PCO_PHASE = 3,
1324         WLAN_HT_ACTION_CSI = 4,
1325         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1326         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1327         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1328 };
1329
1330 /* Self Protected Action codes */
1331 enum ieee80211_self_protected_actioncode {
1332         WLAN_SP_RESERVED = 0,
1333         WLAN_SP_MESH_PEERING_OPEN = 1,
1334         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1335         WLAN_SP_MESH_PEERING_CLOSE = 3,
1336         WLAN_SP_MGK_INFORM = 4,
1337         WLAN_SP_MGK_ACK = 5,
1338 };
1339
1340 /* Mesh action codes */
1341 enum ieee80211_mesh_actioncode {
1342         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1343         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1344         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1345         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1346         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1347         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1348         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1349         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1350         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1351         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1352         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1353 };
1354
1355 /* Security key length */
1356 enum ieee80211_key_len {
1357         WLAN_KEY_LEN_WEP40 = 5,
1358         WLAN_KEY_LEN_WEP104 = 13,
1359         WLAN_KEY_LEN_CCMP = 16,
1360         WLAN_KEY_LEN_TKIP = 32,
1361         WLAN_KEY_LEN_AES_CMAC = 16,
1362 };
1363
1364 /**
1365  * enum - mesh path selection protocol identifier
1366  *
1367  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1368  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1369  * be specified in a vendor specific information element
1370  */
1371 enum {
1372         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1373         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1374 };
1375
1376 /**
1377  * enum - mesh path selection metric identifier
1378  *
1379  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1380  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1381  * specified in a vendor specific information element
1382  */
1383 enum {
1384         IEEE80211_PATH_METRIC_AIRTIME = 0,
1385         IEEE80211_PATH_METRIC_VENDOR = 255,
1386 };
1387
1388
1389 /*
1390  * IEEE 802.11-2007 7.3.2.9 Country information element
1391  *
1392  * Minimum length is 8 octets, ie len must be evenly
1393  * divisible by 2
1394  */
1395
1396 /* Although the spec says 8 I'm seeing 6 in practice */
1397 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1398
1399 /* The Country String field of the element shall be 3 octets in length */
1400 #define IEEE80211_COUNTRY_STRING_LEN    3
1401
1402 /*
1403  * For regulatory extension stuff see IEEE 802.11-2007
1404  * Annex I (page 1141) and Annex J (page 1147). Also
1405  * review 7.3.2.9.
1406  *
1407  * When dot11RegulatoryClassesRequired is true and the
1408  * first_channel/reg_extension_id is >= 201 then the IE
1409  * compromises of the 'ext' struct represented below:
1410  *
1411  *  - Regulatory extension ID - when generating IE this just needs
1412  *    to be monotonically increasing for each triplet passed in
1413  *    the IE
1414  *  - Regulatory class - index into set of rules
1415  *  - Coverage class - index into air propagation time (Table 7-27),
1416  *    in microseconds, you can compute the air propagation time from
1417  *    the index by multiplying by 3, so index 10 yields a propagation
1418  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1419  *    yet. A value of 0 inicates air propagation of <= 1 us.
1420  *
1421  *  See also Table I.2 for Emission limit sets and table
1422  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1423  *  a reg_class to an emission limit set and behavior limit set.
1424  */
1425 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1426
1427 /*
1428  *  Channels numbers in the IE must be monotonically increasing
1429  *  if dot11RegulatoryClassesRequired is not true.
1430  *
1431  *  If dot11RegulatoryClassesRequired is true consecutive
1432  *  subband triplets following a regulatory triplet shall
1433  *  have monotonically increasing first_channel number fields.
1434  *
1435  *  Channel numbers shall not overlap.
1436  *
1437  *  Note that max_power is signed.
1438  */
1439 struct ieee80211_country_ie_triplet {
1440         union {
1441                 struct {
1442                         u8 first_channel;
1443                         u8 num_channels;
1444                         s8 max_power;
1445                 } __attribute__ ((packed)) chans;
1446                 struct {
1447                         u8 reg_extension_id;
1448                         u8 reg_class;
1449                         u8 coverage_class;
1450                 } __attribute__ ((packed)) ext;
1451         };
1452 } __attribute__ ((packed));
1453
1454 enum ieee80211_timeout_interval_type {
1455         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1456         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1457         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1458 };
1459
1460 /* BACK action code */
1461 enum ieee80211_back_actioncode {
1462         WLAN_ACTION_ADDBA_REQ = 0,
1463         WLAN_ACTION_ADDBA_RESP = 1,
1464         WLAN_ACTION_DELBA = 2,
1465 };
1466
1467 /* BACK (block-ack) parties */
1468 enum ieee80211_back_parties {
1469         WLAN_BACK_RECIPIENT = 0,
1470         WLAN_BACK_INITIATOR = 1,
1471 };
1472
1473 /* SA Query action */
1474 enum ieee80211_sa_query_action {
1475         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1476         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1477 };
1478
1479
1480 /* cipher suite selectors */
1481 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1482 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1483 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1484 /* reserved:                            0x000FAC03 */
1485 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1486 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1487 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1488
1489 /* AKM suite selectors */
1490 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1491 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1492 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1493 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1494
1495 #define WLAN_MAX_KEY_LEN                32
1496
1497 #define WLAN_PMKID_LEN                  16
1498
1499 /*
1500  * WMM/802.11e Tspec Element
1501  */
1502 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1503 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1504
1505 enum ieee80211_tspec_status_code {
1506         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1507         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1508 };
1509
1510 struct ieee80211_tspec_ie {
1511         u8 element_id;
1512         u8 len;
1513         u8 oui[3];
1514         u8 oui_type;
1515         u8 oui_subtype;
1516         u8 version;
1517         __le16 tsinfo;
1518         u8 tsinfo_resvd;
1519         __le16 nominal_msdu;
1520         __le16 max_msdu;
1521         __le32 min_service_int;
1522         __le32 max_service_int;
1523         __le32 inactivity_int;
1524         __le32 suspension_int;
1525         __le32 service_start_time;
1526         __le32 min_data_rate;
1527         __le32 mean_data_rate;
1528         __le32 peak_data_rate;
1529         __le32 max_burst_size;
1530         __le32 delay_bound;
1531         __le32 min_phy_rate;
1532         __le16 sba;
1533         __le16 medium_time;
1534 } __packed;
1535
1536 /**
1537  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1538  * @hdr: the frame
1539  *
1540  * The qos ctrl bytes come after the frame_control, duration, seq_num
1541  * and 3 or 4 addresses of length ETH_ALEN.
1542  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1543  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1544  */
1545 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1546 {
1547         if (ieee80211_has_a4(hdr->frame_control))
1548                 return (u8 *)hdr + 30;
1549         else
1550                 return (u8 *)hdr + 24;
1551 }
1552
1553 /**
1554  * ieee80211_get_SA - get pointer to SA
1555  * @hdr: the frame
1556  *
1557  * Given an 802.11 frame, this function returns the offset
1558  * to the source address (SA). It does not verify that the
1559  * header is long enough to contain the address, and the
1560  * header must be long enough to contain the frame control
1561  * field.
1562  */
1563 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1564 {
1565         if (ieee80211_has_a4(hdr->frame_control))
1566                 return hdr->addr4;
1567         if (ieee80211_has_fromds(hdr->frame_control))
1568                 return hdr->addr3;
1569         return hdr->addr2;
1570 }
1571
1572 /**
1573  * ieee80211_get_DA - get pointer to DA
1574  * @hdr: the frame
1575  *
1576  * Given an 802.11 frame, this function returns the offset
1577  * to the destination address (DA). It does not verify that
1578  * the header is long enough to contain the address, and the
1579  * header must be long enough to contain the frame control
1580  * field.
1581  */
1582 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1583 {
1584         if (ieee80211_has_tods(hdr->frame_control))
1585                 return hdr->addr3;
1586         else
1587                 return hdr->addr1;
1588 }
1589
1590 /**
1591  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1592  * @hdr: the frame (buffer must include at least the first octet of payload)
1593  */
1594 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1595 {
1596         if (ieee80211_is_disassoc(hdr->frame_control) ||
1597             ieee80211_is_deauth(hdr->frame_control))
1598                 return true;
1599
1600         if (ieee80211_is_action(hdr->frame_control)) {
1601                 u8 *category;
1602
1603                 /*
1604                  * Action frames, excluding Public Action frames, are Robust
1605                  * Management Frames. However, if we are looking at a Protected
1606                  * frame, skip the check since the data may be encrypted and
1607                  * the frame has already been found to be a Robust Management
1608                  * Frame (by the other end).
1609                  */
1610                 if (ieee80211_has_protected(hdr->frame_control))
1611                         return true;
1612                 category = ((u8 *) hdr) + 24;
1613                 return *category != WLAN_CATEGORY_PUBLIC &&
1614                         *category != WLAN_CATEGORY_HT &&
1615                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1616                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1617         }
1618
1619         return false;
1620 }
1621
1622 /**
1623  * ieee80211_fhss_chan_to_freq - get channel frequency
1624  * @channel: the FHSS channel
1625  *
1626  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1627  * Ref IEEE 802.11-2007 section 14.6
1628  */
1629 static inline int ieee80211_fhss_chan_to_freq(int channel)
1630 {
1631         if ((channel > 1) && (channel < 96))
1632                 return channel + 2400;
1633         else
1634                 return -1;
1635 }
1636
1637 /**
1638  * ieee80211_freq_to_fhss_chan - get channel
1639  * @freq: the channels frequency
1640  *
1641  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1642  * Ref IEEE 802.11-2007 section 14.6
1643  */
1644 static inline int ieee80211_freq_to_fhss_chan(int freq)
1645 {
1646         if ((freq > 2401) && (freq < 2496))
1647                 return freq - 2400;
1648         else
1649                 return -1;
1650 }
1651
1652 /**
1653  * ieee80211_dsss_chan_to_freq - get channel center frequency
1654  * @channel: the DSSS channel
1655  *
1656  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1657  * Ref IEEE 802.11-2007 section 15.6
1658  */
1659 static inline int ieee80211_dsss_chan_to_freq(int channel)
1660 {
1661         if ((channel > 0) && (channel < 14))
1662                 return 2407 + (channel * 5);
1663         else if (channel == 14)
1664                 return 2484;
1665         else
1666                 return -1;
1667 }
1668
1669 /**
1670  * ieee80211_freq_to_dsss_chan - get channel
1671  * @freq: the frequency
1672  *
1673  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1674  * Ref IEEE 802.11-2007 section 15.6
1675  *
1676  * This routine selects the channel with the closest center frequency.
1677  */
1678 static inline int ieee80211_freq_to_dsss_chan(int freq)
1679 {
1680         if ((freq >= 2410) && (freq < 2475))
1681                 return (freq - 2405) / 5;
1682         else if ((freq >= 2482) && (freq < 2487))
1683                 return 14;
1684         else
1685                 return -1;
1686 }
1687
1688 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1689  * Ref IEEE 802.11-2007 section 18.4.6.2
1690  *
1691  * The channels and frequencies are the same as those defined for DSSS
1692  */
1693 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1694 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1695
1696 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1697  * Ref IEEE 802.11-2007 section 19.4.2
1698  */
1699 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1700 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1701
1702 /**
1703  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1704  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1705  * @channel: the OFDM channel
1706  *
1707  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1708  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1709  */
1710 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1711 {
1712         if ((channel > 0) && (channel <= 200) &&
1713             (s_freq >= 4000))
1714                 return s_freq + (channel * 5);
1715         else
1716                 return -1;
1717 }
1718
1719 /**
1720  * ieee80211_freq_to_ofdm_channel - get channel
1721  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1722  * @freq: the frequency
1723  *
1724  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1725  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1726  *
1727  * This routine selects the channel with the closest center frequency.
1728  */
1729 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1730 {
1731         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1732             (s_freq >= 4000))
1733                 return (freq + 2 - s_freq) / 5;
1734         else
1735                 return -1;
1736 }
1737
1738 /**
1739  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1740  * @tu: the TUs
1741  */
1742 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1743 {
1744         return 1024 * tu;
1745 }
1746
1747 /**
1748  * ieee80211_check_tim - check if AID bit is set in TIM
1749  * @tim: the TIM IE
1750  * @tim_len: length of the TIM IE
1751  * @aid: the AID to look for
1752  */
1753 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1754                                        u8 tim_len, u16 aid)
1755 {
1756         u8 mask;
1757         u8 indexn0, indexn1, indexn2;
1758
1759         if (unlikely(!tim || tim_len < sizeof(*tim)))
1760                 return false;
1761
1762         aid &= 0x3fff;
1763         indexn0 = aid / 8;
1764         mask  = 1 << (aid & 7);
1765
1766         indexn1 = tim->bitmap_ctrl & 0xfe;
1767         indexn2 = tim_len + indexn1 - 4;
1768
1769         if (indexn0 < indexn1 || indexn0 > indexn2)
1770                 return false;
1771
1772         indexn0 -= indexn1;
1773
1774         return !!(tim->virtual_map[indexn0] & mask);
1775 }
1776
1777 #endif /* __LINUX_IEEE80211_H */