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                                         /* capab_info for open and confirm,
 755                                          * reason for close
 756                                          */
 757                                         __le16 aux;
 758                                         /* Followed in plink_confirm by status
 759                                          * code, AID and supported rates,
 760                                          * and directly by supported rates in
 761                                          * plink_open and plink_close
 762                                          */
 763                                         u8 variable[0];
 764                                 } __attribute__((packed)) plink_action;
 765                                 struct{
 766                                         u8 action_code;
 767                                         u8 variable[0];
 768                                 } __attribute__((packed)) mesh_action;
 769                                 struct {
 770                                         u8 action;
 771                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 772                                 } __attribute__ ((packed)) sa_query;
 773                                 struct {
 774                                         u8 action;
 775                                         u8 smps_control;
 776                                 } __attribute__ ((packed)) ht_smps;
 777                         } u;
 778                 } __attribute__ ((packed)) action;
 779         } u;
 780 } __attribute__ ((packed));
 781
 782 /* mgmt header + 1 byte category code */
 783 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 784
 785
 786 /* Management MIC information element (IEEE 802.11w) */
 787 struct ieee80211_mmie {
 788         u8 element_id;
 789         u8 length;
 790         __le16 key_id;
 791         u8 sequence_number[6];
 792         u8 mic[8];
 793 } __attribute__ ((packed));
 794
 795 /* Control frames */
 796 struct ieee80211_rts {
 797         __le16 frame_control;
 798         __le16 duration;
 799         u8 ra[6];
 800         u8 ta[6];
 801 } __attribute__ ((packed));
 802
 803 struct ieee80211_cts {
 804         __le16 frame_control;
 805         __le16 duration;
 806         u8 ra[6];
 807 } __attribute__ ((packed));
 808
 809 struct ieee80211_pspoll {
 810         __le16 frame_control;
 811         __le16 aid;
 812         u8 bssid[6];
 813         u8 ta[6];
 814 } __attribute__ ((packed));
 815
 816 /**
 817  * struct ieee80211_bar - HT Block Ack Request
 818  *
 819  * This structure refers to "HT BlockAckReq" as
 820  * described in 802.11n draft section 7.2.1.7.1
 821  */
 822 struct ieee80211_bar {
 823         __le16 frame_control;
 824         __le16 duration;
 825         __u8 ra[6];
 826         __u8 ta[6];
 827         __le16 control;
 828         __le16 start_seq_num;
 829 } __attribute__((packed)) __aligned(4);
 830
 831 /* 802.11 BA(R) control masks */
 832 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 833 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 834 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 835 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 836 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 837
 838 /**
 839  * struct ieee80211_ba - HT Block Ack
 840  *
 841  * This structure refers to "HT BlockAck" as
 842  * described in 802.11n draft section 7.2.1.8.1
 843  */
 844 struct ieee80211_ba {
 845         __le16 frame_control;
 846         __le16 duration;
 847         u8 ra[6];
 848         u8 ta[6];
 849         __le16 control;
 850
 851         __le16 start_seq_num;
 852         u8 bitmap[8];
 853 } __attribute__((packed));
 854
 855 #define IEEE80211_HT_MCS_MASK_LEN               10
 856
 857 /**
 858  * struct ieee80211_mcs_info - MCS information
 859  * @rx_mask: RX mask
 860  * @rx_highest: highest supported RX rate. If set represents
 861  *      the highest supported RX data rate in units of 1 Mbps.
 862  *      If this field is 0 this value should not be used to
 863  *      consider the highest RX data rate supported.
 864  * @tx_params: TX parameters
 865  */
 866 struct ieee80211_mcs_info {
 867         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 868         __le16 rx_highest;
 869         u8 tx_params;
 870         u8 reserved[3];
 871 } __attribute__((packed));
 872
 873 /* 802.11n HT capability MSC set */
 874 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 875 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 876 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 877 /* value 0 == 1 stream etc */
 878 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 879 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 880 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 881 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 882
 883 /*
 884  * 802.11n D5.0 20.3.5 / 20.6 says:
 885  * - indices 0 to 7 and 32 are single spatial stream
 886  * - 8 to 31 are multiple spatial streams using equal modulation
 887  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 888  * - remainder are multiple spatial streams using unequal modulation
 889  */
 890 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 891 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 892         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 893
 894 /**
 895  * struct ieee80211_ht_cap - HT capabilities
 896  *
 897  * This structure is the "HT capabilities element" as
 898  * described in 802.11n D5.0 7.3.2.57
 899  */
 900 struct ieee80211_ht_cap {
 901         __le16 cap_info;
 902         u8 ampdu_params_info;
 903
 904         /* 16 bytes MCS information */
 905         struct ieee80211_mcs_info mcs;
 906
 907         __le16 extended_ht_cap_info;
 908         __le32 tx_BF_cap_info;
 909         u8 antenna_selection_info;
 910 } __attribute__ ((packed));
 911
 912 /* 802.11n HT capabilities masks (for cap_info) */
 913 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 914 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 915 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 916 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 917 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 918 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 919 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 920 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 921 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 922 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 923 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 924 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 925 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 926 #define IEEE80211_HT_CAP_RESERVED               0x2000
 927 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 928 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 929
 930 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 931 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 932 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 933 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 934 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 935 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 936 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 937 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 938
 939 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 940 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 941 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 942 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 943
 944 /*
 945  * Maximum length of AMPDU that the STA can receive.
 946  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 947  */
 948 enum ieee80211_max_ampdu_length_exp {
 949         IEEE80211_HT_MAX_AMPDU_8K = 0,
 950         IEEE80211_HT_MAX_AMPDU_16K = 1,
 951         IEEE80211_HT_MAX_AMPDU_32K = 2,
 952         IEEE80211_HT_MAX_AMPDU_64K = 3
 953 };
 954
 955 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 956
 957 /* Minimum MPDU start spacing */
 958 enum ieee80211_min_mpdu_spacing {
 959         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 960         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 961         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 962         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 963         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 964         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 965         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 966         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 967 };
 968
 969 /**
 970  * struct ieee80211_ht_info - HT information
 971  *
 972  * This structure is the "HT information element" as
 973  * described in 802.11n D5.0 7.3.2.58
 974  */
 975 struct ieee80211_ht_info {
 976         u8 control_chan;
 977         u8 ht_param;
 978         __le16 operation_mode;
 979         __le16 stbc_param;
 980         u8 basic_set[16];
 981 } __attribute__ ((packed));
 982
 983 /* for ht_param */
 984 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
 985 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
 986 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
 987 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
 988 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
 989 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
 990 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
 991 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
 992
 993 /* for operation_mode */
 994 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
 995 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
 996 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
 997 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
 998 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
 999 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1000 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1001
1002 /* for stbc_param */
1003 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1004 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1005 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1006 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1007 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1008 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1009
1010
1011 /* block-ack parameters */
1012 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1013 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1014 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1015 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1016 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1017
1018 /*
1019  * A-PMDU buffer sizes
1020  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1021  */
1022 #define IEEE80211_MIN_AMPDU_BUF 0x8
1023 #define IEEE80211_MAX_AMPDU_BUF 0x40
1024
1025
1026 /* Spatial Multiplexing Power Save Modes (for capability) */
1027 #define WLAN_HT_CAP_SM_PS_STATIC        0
1028 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1029 #define WLAN_HT_CAP_SM_PS_INVALID       2
1030 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1031
1032 /* for SM power control field lower two bits */
1033 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1034 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1035 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1036
1037 /* Authentication algorithms */
1038 #define WLAN_AUTH_OPEN 0
1039 #define WLAN_AUTH_SHARED_KEY 1
1040 #define WLAN_AUTH_FT 2
1041 #define WLAN_AUTH_SAE 3
1042 #define WLAN_AUTH_LEAP 128
1043
1044 #define WLAN_AUTH_CHALLENGE_LEN 128
1045
1046 #define WLAN_CAPABILITY_ESS             (1<<0)
1047 #define WLAN_CAPABILITY_IBSS            (1<<1)
1048
1049 /*
1050  * A mesh STA sets the ESS and IBSS capability bits to zero.
1051  * however, this holds true for p2p probe responses (in the p2p_find
1052  * phase) as well.
1053  */
1054 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1055         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1056
1057 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1058 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1059 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1060 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1061 #define WLAN_CAPABILITY_PBCC            (1<<6)
1062 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1063
1064 /* 802.11h */
1065 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1066 #define WLAN_CAPABILITY_QOS             (1<<9)
1067 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1068 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1069 /* measurement */
1070 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1071 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1072 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1073
1074 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1075 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1076 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1077
1078
1079 /* 802.11g ERP information element */
1080 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1081 #define WLAN_ERP_USE_PROTECTION (1<<1)
1082 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1083
1084 /* WLAN_ERP_BARKER_PREAMBLE values */
1085 enum {
1086         WLAN_ERP_PREAMBLE_SHORT = 0,
1087         WLAN_ERP_PREAMBLE_LONG = 1,
1088 };
1089
1090 /* Status codes */
1091 enum ieee80211_statuscode {
1092         WLAN_STATUS_SUCCESS = 0,
1093         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1094         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1095         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1096         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1097         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1098         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1099         WLAN_STATUS_CHALLENGE_FAIL = 15,
1100         WLAN_STATUS_AUTH_TIMEOUT = 16,
1101         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1102         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1103         /* 802.11b */
1104         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1105         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1106         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1107         /* 802.11h */
1108         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1109         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1110         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1111         /* 802.11g */
1112         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1113         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1114         /* 802.11w */
1115         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1116         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1117         /* 802.11i */
1118         WLAN_STATUS_INVALID_IE = 40,
1119         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1120         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1121         WLAN_STATUS_INVALID_AKMP = 43,
1122         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1123         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1124         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1125         /* 802.11e */
1126         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1127         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1128         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1129         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1130         WLAN_STATUS_REQUEST_DECLINED = 37,
1131         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1132         WLAN_STATUS_CHANGE_TSPEC = 39,
1133         WLAN_STATUS_WAIT_TS_DELAY = 47,
1134         WLAN_STATUS_NO_DIRECT_LINK = 48,
1135         WLAN_STATUS_STA_NOT_PRESENT = 49,
1136         WLAN_STATUS_STA_NOT_QSTA = 50,
1137         /* 802.11s */
1138         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1139         WLAN_STATUS_FCG_NOT_SUPP = 78,
1140         WLAN_STATUS_STA_NO_TBTT = 78,
1141 };
1142
1143
1144 /* Reason codes */
1145 enum ieee80211_reasoncode {
1146         WLAN_REASON_UNSPECIFIED = 1,
1147         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1148         WLAN_REASON_DEAUTH_LEAVING = 3,
1149         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1150         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1151         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1152         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1153         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1154         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1155         /* 802.11h */
1156         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1157         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1158         /* 802.11i */
1159         WLAN_REASON_INVALID_IE = 13,
1160         WLAN_REASON_MIC_FAILURE = 14,
1161         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1162         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1163         WLAN_REASON_IE_DIFFERENT = 17,
1164         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1165         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1166         WLAN_REASON_INVALID_AKMP = 20,
1167         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1168         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1169         WLAN_REASON_IEEE8021X_FAILED = 23,
1170         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1171         /* 802.11e */
1172         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1173         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1174         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1175         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1176         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1177         WLAN_REASON_QSTA_NOT_USE = 37,
1178         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1179         WLAN_REASON_QSTA_TIMEOUT = 39,
1180         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1181         /* 802.11s */
1182         WLAN_REASON_MESH_PEER_CANCELED = 52,
1183         WLAN_REASON_MESH_MAX_PEERS = 53,
1184         WLAN_REASON_MESH_CONFIG = 54,
1185         WLAN_REASON_MESH_CLOSE = 55,
1186         WLAN_REASON_MESH_MAX_RETRIES = 56,
1187         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1188         WLAN_REASON_MESH_INVALID_GTK = 58,
1189         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1190         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1191         WLAN_REASON_MESH_PATH_ERROR = 61,
1192         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1193         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1194         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1195         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1196         WLAN_REASON_MESH_CHAN = 66,
1197 };
1198
1199
1200 /* Information Element IDs */
1201 enum ieee80211_eid {
1202         WLAN_EID_SSID = 0,
1203         WLAN_EID_SUPP_RATES = 1,
1204         WLAN_EID_FH_PARAMS = 2,
1205         WLAN_EID_DS_PARAMS = 3,
1206         WLAN_EID_CF_PARAMS = 4,
1207         WLAN_EID_TIM = 5,
1208         WLAN_EID_IBSS_PARAMS = 6,
1209         WLAN_EID_CHALLENGE = 16,
1210
1211         WLAN_EID_COUNTRY = 7,
1212         WLAN_EID_HP_PARAMS = 8,
1213         WLAN_EID_HP_TABLE = 9,
1214         WLAN_EID_REQUEST = 10,
1215
1216         WLAN_EID_QBSS_LOAD = 11,
1217         WLAN_EID_EDCA_PARAM_SET = 12,
1218         WLAN_EID_TSPEC = 13,
1219         WLAN_EID_TCLAS = 14,
1220         WLAN_EID_SCHEDULE = 15,
1221         WLAN_EID_TS_DELAY = 43,
1222         WLAN_EID_TCLAS_PROCESSING = 44,
1223         WLAN_EID_QOS_CAPA = 46,
1224         /* 802.11s */
1225         WLAN_EID_MESH_CONFIG = 113,
1226         WLAN_EID_MESH_ID = 114,
1227         WLAN_EID_LINK_METRIC_REPORT = 115,
1228         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1229         /* Note that the Peer Link IE has been replaced with the similar
1230          * Peer Management IE.  We will keep the former definition until mesh
1231          * code is changed to comply with latest 802.11s drafts.
1232          */
1233         WLAN_EID_PEER_LINK = 55,  /* no longer in 802.11s drafts */
1234         WLAN_EID_PEER_MGMT = 117,
1235         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1236         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1237         WLAN_EID_BEACON_TIMING = 120,
1238         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1239         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1240         WLAN_EID_MCCAOP_ADVERT = 123,
1241         WLAN_EID_MCCAOP_TEARDOWN = 124,
1242         WLAN_EID_GANN = 125,
1243         WLAN_EID_RANN = 126,
1244         WLAN_EID_PREQ = 130,
1245         WLAN_EID_PREP = 131,
1246         WLAN_EID_PERR = 132,
1247         WLAN_EID_PXU = 137,
1248         WLAN_EID_PXUC = 138,
1249         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1250         WLAN_EID_MIC = 140,
1251
1252         WLAN_EID_PWR_CONSTRAINT = 32,
1253         WLAN_EID_PWR_CAPABILITY = 33,
1254         WLAN_EID_TPC_REQUEST = 34,
1255         WLAN_EID_TPC_REPORT = 35,
1256         WLAN_EID_SUPPORTED_CHANNELS = 36,
1257         WLAN_EID_CHANNEL_SWITCH = 37,
1258         WLAN_EID_MEASURE_REQUEST = 38,
1259         WLAN_EID_MEASURE_REPORT = 39,
1260         WLAN_EID_QUIET = 40,
1261         WLAN_EID_IBSS_DFS = 41,
1262
1263         WLAN_EID_ERP_INFO = 42,
1264         WLAN_EID_EXT_SUPP_RATES = 50,
1265
1266         WLAN_EID_HT_CAPABILITY = 45,
1267         WLAN_EID_HT_INFORMATION = 61,
1268
1269         WLAN_EID_RSN = 48,
1270         WLAN_EID_MMIE = 76,
1271         WLAN_EID_WPA = 221,
1272         WLAN_EID_GENERIC = 221,
1273         WLAN_EID_VENDOR_SPECIFIC = 221,
1274         WLAN_EID_QOS_PARAMETER = 222,
1275
1276         WLAN_EID_AP_CHAN_REPORT = 51,
1277         WLAN_EID_NEIGHBOR_REPORT = 52,
1278         WLAN_EID_RCPI = 53,
1279         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1280         WLAN_EID_ANTENNA_INFO = 64,
1281         WLAN_EID_RSNI = 65,
1282         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1283         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1284         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1285         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1286         WLAN_EID_MULTIPLE_BSSID = 71,
1287         WLAN_EID_BSS_COEX_2040 = 72,
1288         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1289         WLAN_EID_EXT_CAPABILITY = 127,
1290
1291         WLAN_EID_MOBILITY_DOMAIN = 54,
1292         WLAN_EID_FAST_BSS_TRANSITION = 55,
1293         WLAN_EID_TIMEOUT_INTERVAL = 56,
1294         WLAN_EID_RIC_DATA = 57,
1295         WLAN_EID_RIC_DESCRIPTOR = 75,
1296
1297         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1298         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1299         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1300 };
1301
1302 /* Action category code */
1303 enum ieee80211_category {
1304         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1305         WLAN_CATEGORY_QOS = 1,
1306         WLAN_CATEGORY_DLS = 2,
1307         WLAN_CATEGORY_BACK = 3,
1308         WLAN_CATEGORY_PUBLIC = 4,
1309         WLAN_CATEGORY_HT = 7,
1310         WLAN_CATEGORY_SA_QUERY = 8,
1311         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1312         WLAN_CATEGORY_MESH_ACTION = 13,
1313         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1314         WLAN_CATEGORY_SELF_PROTECTED = 15,
1315         WLAN_CATEGORY_WMM = 17,
1316         /* TODO: remove MESH_PATH_SEL after mesh is updated
1317          * to current 802.11s draft  */
1318         WLAN_CATEGORY_MESH_PATH_SEL = 32,
1319         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1320         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1321 };
1322
1323 /* SPECTRUM_MGMT action code */
1324 enum ieee80211_spectrum_mgmt_actioncode {
1325         WLAN_ACTION_SPCT_MSR_REQ = 0,
1326         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1327         WLAN_ACTION_SPCT_TPC_REQ = 2,
1328         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1329         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1330 };
1331
1332 /* HT action codes */
1333 enum ieee80211_ht_actioncode {
1334         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1335         WLAN_HT_ACTION_SMPS = 1,
1336         WLAN_HT_ACTION_PSMP = 2,
1337         WLAN_HT_ACTION_PCO_PHASE = 3,
1338         WLAN_HT_ACTION_CSI = 4,
1339         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1340         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1341         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1342 };
1343
1344 /* Security key length */
1345 enum ieee80211_key_len {
1346         WLAN_KEY_LEN_WEP40 = 5,
1347         WLAN_KEY_LEN_WEP104 = 13,
1348         WLAN_KEY_LEN_CCMP = 16,
1349         WLAN_KEY_LEN_TKIP = 32,
1350         WLAN_KEY_LEN_AES_CMAC = 16,
1351 };
1352
1353 /**
1354  * enum - mesh path selection protocol identifier
1355  *
1356  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1357  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1358  * be specified in a vendor specific information element
1359  */
1360 enum {
1361         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1362         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1363 };
1364
1365 /**
1366  * enum - mesh path selection metric identifier
1367  *
1368  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1369  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1370  * specified in a vendor specific information element
1371  */
1372 enum {
1373         IEEE80211_PATH_METRIC_AIRTIME = 0,
1374         IEEE80211_PATH_METRIC_VENDOR = 255,
1375 };
1376
1377
1378 /*
1379  * IEEE 802.11-2007 7.3.2.9 Country information element
1380  *
1381  * Minimum length is 8 octets, ie len must be evenly
1382  * divisible by 2
1383  */
1384
1385 /* Although the spec says 8 I'm seeing 6 in practice */
1386 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1387
1388 /* The Country String field of the element shall be 3 octets in length */
1389 #define IEEE80211_COUNTRY_STRING_LEN    3
1390
1391 /*
1392  * For regulatory extension stuff see IEEE 802.11-2007
1393  * Annex I (page 1141) and Annex J (page 1147). Also
1394  * review 7.3.2.9.
1395  *
1396  * When dot11RegulatoryClassesRequired is true and the
1397  * first_channel/reg_extension_id is >= 201 then the IE
1398  * compromises of the 'ext' struct represented below:
1399  *
1400  *  - Regulatory extension ID - when generating IE this just needs
1401  *    to be monotonically increasing for each triplet passed in
1402  *    the IE
1403  *  - Regulatory class - index into set of rules
1404  *  - Coverage class - index into air propagation time (Table 7-27),
1405  *    in microseconds, you can compute the air propagation time from
1406  *    the index by multiplying by 3, so index 10 yields a propagation
1407  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1408  *    yet. A value of 0 inicates air propagation of <= 1 us.
1409  *
1410  *  See also Table I.2 for Emission limit sets and table
1411  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1412  *  a reg_class to an emission limit set and behavior limit set.
1413  */
1414 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1415
1416 /*
1417  *  Channels numbers in the IE must be monotonically increasing
1418  *  if dot11RegulatoryClassesRequired is not true.
1419  *
1420  *  If dot11RegulatoryClassesRequired is true consecutive
1421  *  subband triplets following a regulatory triplet shall
1422  *  have monotonically increasing first_channel number fields.
1423  *
1424  *  Channel numbers shall not overlap.
1425  *
1426  *  Note that max_power is signed.
1427  */
1428 struct ieee80211_country_ie_triplet {
1429         union {
1430                 struct {
1431                         u8 first_channel;
1432                         u8 num_channels;
1433                         s8 max_power;
1434                 } __attribute__ ((packed)) chans;
1435                 struct {
1436                         u8 reg_extension_id;
1437                         u8 reg_class;
1438                         u8 coverage_class;
1439                 } __attribute__ ((packed)) ext;
1440         };
1441 } __attribute__ ((packed));
1442
1443 enum ieee80211_timeout_interval_type {
1444         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1445         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1446         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1447 };
1448
1449 /* BACK action code */
1450 enum ieee80211_back_actioncode {
1451         WLAN_ACTION_ADDBA_REQ = 0,
1452         WLAN_ACTION_ADDBA_RESP = 1,
1453         WLAN_ACTION_DELBA = 2,
1454 };
1455
1456 /* BACK (block-ack) parties */
1457 enum ieee80211_back_parties {
1458         WLAN_BACK_RECIPIENT = 0,
1459         WLAN_BACK_INITIATOR = 1,
1460 };
1461
1462 /* SA Query action */
1463 enum ieee80211_sa_query_action {
1464         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1465         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1466 };
1467
1468
1469 /* cipher suite selectors */
1470 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1471 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1472 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1473 /* reserved:                            0x000FAC03 */
1474 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1475 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1476 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1477
1478 /* AKM suite selectors */
1479 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1480 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1481 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1482 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1483
1484 #define WLAN_MAX_KEY_LEN                32
1485
1486 #define WLAN_PMKID_LEN                  16
1487
1488 /*
1489  * WMM/802.11e Tspec Element
1490  */
1491 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1492 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1493
1494 enum ieee80211_tspec_status_code {
1495         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1496         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1497 };
1498
1499 struct ieee80211_tspec_ie {
1500         u8 element_id;
1501         u8 len;
1502         u8 oui[3];
1503         u8 oui_type;
1504         u8 oui_subtype;
1505         u8 version;
1506         __le16 tsinfo;
1507         u8 tsinfo_resvd;
1508         __le16 nominal_msdu;
1509         __le16 max_msdu;
1510         __le32 min_service_int;
1511         __le32 max_service_int;
1512         __le32 inactivity_int;
1513         __le32 suspension_int;
1514         __le32 service_start_time;
1515         __le32 min_data_rate;
1516         __le32 mean_data_rate;
1517         __le32 peak_data_rate;
1518         __le32 max_burst_size;
1519         __le32 delay_bound;
1520         __le32 min_phy_rate;
1521         __le16 sba;
1522         __le16 medium_time;
1523 } __packed;
1524
1525 /**
1526  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1527  * @hdr: the frame
1528  *
1529  * The qos ctrl bytes come after the frame_control, duration, seq_num
1530  * and 3 or 4 addresses of length ETH_ALEN.
1531  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1532  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1533  */
1534 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1535 {
1536         if (ieee80211_has_a4(hdr->frame_control))
1537                 return (u8 *)hdr + 30;
1538         else
1539                 return (u8 *)hdr + 24;
1540 }
1541
1542 /**
1543  * ieee80211_get_SA - get pointer to SA
1544  * @hdr: the frame
1545  *
1546  * Given an 802.11 frame, this function returns the offset
1547  * to the source address (SA). It does not verify that the
1548  * header is long enough to contain the address, and the
1549  * header must be long enough to contain the frame control
1550  * field.
1551  */
1552 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1553 {
1554         if (ieee80211_has_a4(hdr->frame_control))
1555                 return hdr->addr4;
1556         if (ieee80211_has_fromds(hdr->frame_control))
1557                 return hdr->addr3;
1558         return hdr->addr2;
1559 }
1560
1561 /**
1562  * ieee80211_get_DA - get pointer to DA
1563  * @hdr: the frame
1564  *
1565  * Given an 802.11 frame, this function returns the offset
1566  * to the destination address (DA). It does not verify that
1567  * the header is long enough to contain the address, and the
1568  * header must be long enough to contain the frame control
1569  * field.
1570  */
1571 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1572 {
1573         if (ieee80211_has_tods(hdr->frame_control))
1574                 return hdr->addr3;
1575         else
1576                 return hdr->addr1;
1577 }
1578
1579 /**
1580  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1581  * @hdr: the frame (buffer must include at least the first octet of payload)
1582  */
1583 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1584 {
1585         if (ieee80211_is_disassoc(hdr->frame_control) ||
1586             ieee80211_is_deauth(hdr->frame_control))
1587                 return true;
1588
1589         if (ieee80211_is_action(hdr->frame_control)) {
1590                 u8 *category;
1591
1592                 /*
1593                  * Action frames, excluding Public Action frames, are Robust
1594                  * Management Frames. However, if we are looking at a Protected
1595                  * frame, skip the check since the data may be encrypted and
1596                  * the frame has already been found to be a Robust Management
1597                  * Frame (by the other end).
1598                  */
1599                 if (ieee80211_has_protected(hdr->frame_control))
1600                         return true;
1601                 category = ((u8 *) hdr) + 24;
1602                 return *category != WLAN_CATEGORY_PUBLIC &&
1603                         *category != WLAN_CATEGORY_HT &&
1604                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1605                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1606         }
1607
1608         return false;
1609 }
1610
1611 /**
1612  * ieee80211_fhss_chan_to_freq - get channel frequency
1613  * @channel: the FHSS channel
1614  *
1615  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1616  * Ref IEEE 802.11-2007 section 14.6
1617  */
1618 static inline int ieee80211_fhss_chan_to_freq(int channel)
1619 {
1620         if ((channel > 1) && (channel < 96))
1621                 return channel + 2400;
1622         else
1623                 return -1;
1624 }
1625
1626 /**
1627  * ieee80211_freq_to_fhss_chan - get channel
1628  * @freq: the channels frequency
1629  *
1630  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1631  * Ref IEEE 802.11-2007 section 14.6
1632  */
1633 static inline int ieee80211_freq_to_fhss_chan(int freq)
1634 {
1635         if ((freq > 2401) && (freq < 2496))
1636                 return freq - 2400;
1637         else
1638                 return -1;
1639 }
1640
1641 /**
1642  * ieee80211_dsss_chan_to_freq - get channel center frequency
1643  * @channel: the DSSS channel
1644  *
1645  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1646  * Ref IEEE 802.11-2007 section 15.6
1647  */
1648 static inline int ieee80211_dsss_chan_to_freq(int channel)
1649 {
1650         if ((channel > 0) && (channel < 14))
1651                 return 2407 + (channel * 5);
1652         else if (channel == 14)
1653                 return 2484;
1654         else
1655                 return -1;
1656 }
1657
1658 /**
1659  * ieee80211_freq_to_dsss_chan - get channel
1660  * @freq: the frequency
1661  *
1662  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1663  * Ref IEEE 802.11-2007 section 15.6
1664  *
1665  * This routine selects the channel with the closest center frequency.
1666  */
1667 static inline int ieee80211_freq_to_dsss_chan(int freq)
1668 {
1669         if ((freq >= 2410) && (freq < 2475))
1670                 return (freq - 2405) / 5;
1671         else if ((freq >= 2482) && (freq < 2487))
1672                 return 14;
1673         else
1674                 return -1;
1675 }
1676
1677 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1678  * Ref IEEE 802.11-2007 section 18.4.6.2
1679  *
1680  * The channels and frequencies are the same as those defined for DSSS
1681  */
1682 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1683 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1684
1685 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1686  * Ref IEEE 802.11-2007 section 19.4.2
1687  */
1688 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1689 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1690
1691 /**
1692  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1693  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1694  * @channel: the OFDM channel
1695  *
1696  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1697  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1698  */
1699 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1700 {
1701         if ((channel > 0) && (channel <= 200) &&
1702             (s_freq >= 4000))
1703                 return s_freq + (channel * 5);
1704         else
1705                 return -1;
1706 }
1707
1708 /**
1709  * ieee80211_freq_to_ofdm_channel - get channel
1710  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1711  * @freq: the frequency
1712  *
1713  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1714  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1715  *
1716  * This routine selects the channel with the closest center frequency.
1717  */
1718 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1719 {
1720         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1721             (s_freq >= 4000))
1722                 return (freq + 2 - s_freq) / 5;
1723         else
1724                 return -1;
1725 }
1726
1727 /**
1728  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1729  * @tu: the TUs
1730  */
1731 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1732 {
1733         return 1024 * tu;
1734 }
1735
1736 /**
1737  * ieee80211_check_tim - check if AID bit is set in TIM
1738  * @tim: the TIM IE
1739  * @tim_len: length of the TIM IE
1740  * @aid: the AID to look for
1741  */
1742 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1743                                        u8 tim_len, u16 aid)
1744 {
1745         u8 mask;
1746         u8 indexn0, indexn1, indexn2;
1747
1748         if (unlikely(!tim || tim_len < sizeof(*tim)))
1749                 return false;
1750
1751         aid &= 0x3fff;
1752         indexn0 = aid / 8;
1753         mask  = 1 << (aid & 7);
1754
1755         indexn1 = tim->bitmap_ctrl & 0xfe;
1756         indexn2 = tim_len + indexn1 - 4;
1757
1758         if (indexn0 < indexn1 || indexn0 > indexn2)
1759                 return false;
1760
1761         indexn0 -= indexn1;
1762
1763         return !!(tim->virtual_map[indexn0] & mask);
1764 }
1765
1766 #endif /* __LINUX_IEEE80211_H */