include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef LINUX_IEEE80211_H
  16 #define LINUX_IEEE80211_H
  17
  18 #include <linux/types.h>
  19 #include <asm/byteorder.h>
  20
  21 /*
  22  * DS bit usage
  23  *
  24  * TA = transmitter address
  25  * RA = receiver address
  26  * DA = destination address
  27  * SA = source address
  28  *
  29  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  30  * -----------------------------------------------------------------
  31  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  32  *  0       1       DA      BSSID   SA      -       AP -> STA
  33  *  1       0       BSSID   SA      DA      -       AP <- STA
  34  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  35  */
  36
  37 #define FCS_LEN 4
  38
  39 #define IEEE80211_FCTL_VERS             0x0003
  40 #define IEEE80211_FCTL_FTYPE            0x000c
  41 #define IEEE80211_FCTL_STYPE            0x00f0
  42 #define IEEE80211_FCTL_TODS             0x0100
  43 #define IEEE80211_FCTL_FROMDS           0x0200
  44 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  45 #define IEEE80211_FCTL_RETRY            0x0800
  46 #define IEEE80211_FCTL_PM               0x1000
  47 #define IEEE80211_FCTL_MOREDATA         0x2000
  48 #define IEEE80211_FCTL_PROTECTED        0x4000
  49 #define IEEE80211_FCTL_ORDER            0x8000
  50 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  51
  52 #define IEEE80211_SCTL_FRAG             0x000F
  53 #define IEEE80211_SCTL_SEQ              0xFFF0
  54
  55 #define IEEE80211_FTYPE_MGMT            0x0000
  56 #define IEEE80211_FTYPE_CTL             0x0004
  57 #define IEEE80211_FTYPE_DATA            0x0008
  58 #define IEEE80211_FTYPE_EXT             0x000c
  59
  60 /* management */
  61 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  62 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  63 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  64 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  65 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  66 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  67 #define IEEE80211_STYPE_BEACON          0x0080
  68 #define IEEE80211_STYPE_ATIM            0x0090
  69 #define IEEE80211_STYPE_DISASSOC        0x00A0
  70 #define IEEE80211_STYPE_AUTH            0x00B0
  71 #define IEEE80211_STYPE_DEAUTH          0x00C0
  72 #define IEEE80211_STYPE_ACTION          0x00D0
  73
  74 /* control */
  75 #define IEEE80211_STYPE_CTL_EXT         0x0060
  76 #define IEEE80211_STYPE_BACK_REQ        0x0080
  77 #define IEEE80211_STYPE_BACK            0x0090
  78 #define IEEE80211_STYPE_PSPOLL          0x00A0
  79 #define IEEE80211_STYPE_RTS             0x00B0
  80 #define IEEE80211_STYPE_CTS             0x00C0
  81 #define IEEE80211_STYPE_ACK             0x00D0
  82 #define IEEE80211_STYPE_CFEND           0x00E0
  83 #define IEEE80211_STYPE_CFENDACK        0x00F0
  84
  85 /* data */
  86 #define IEEE80211_STYPE_DATA                    0x0000
  87 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  88 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  89 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  90 #define IEEE80211_STYPE_NULLFUNC                0x0040
  91 #define IEEE80211_STYPE_CFACK                   0x0050
  92 #define IEEE80211_STYPE_CFPOLL                  0x0060
  93 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  94 #define IEEE80211_STYPE_QOS_DATA                0x0080
  95 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  96 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  97 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  98 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  99 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
 100 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
 101 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
 102
 103 /* extension, added by 802.11ad */
 104 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 105
 106 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 107 #define IEEE80211_CTL_EXT_POLL          0x2000
 108 #define IEEE80211_CTL_EXT_SPR           0x3000
 109 #define IEEE80211_CTL_EXT_GRANT 0x4000
 110 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 111 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 112 #define IEEE80211_CTL_EXT_SSW           0x8000
 113 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 114 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 115
 116 /* miscellaneous IEEE 802.11 constants */
 117 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 118 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 119 #define IEEE80211_MAX_AID               2007
 120 #define IEEE80211_MAX_TIM_LEN           251
 121 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 122    6.2.1.1.2.
 123
 124    802.11e clarifies the figure in section 7.1.2. The frame body is
 125    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 126 #define IEEE80211_MAX_DATA_LEN          2304
 127 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 128 #define IEEE80211_MAX_FRAME_LEN         2352
 129
 130 #define IEEE80211_MAX_SSID_LEN          32
 131
 132 #define IEEE80211_MAX_MESH_ID_LEN       32
 133
 134 #define IEEE80211_QOS_CTL_LEN           2
 135 /* 1d tag mask */
 136 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 137 /* TID mask */
 138 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 139 /* EOSP */
 140 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 141 /* ACK policy */
 142 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 143 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 144 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 145 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 146 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 147 /* A-MSDU 802.11n */
 148 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 149 /* Mesh Control 802.11s */
 150 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 151
 152 /* U-APSD queue for WMM IEs sent by AP */
 153 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 154 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 155
 156 /* U-APSD queues for WMM IEs sent by STA */
 157 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 158 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 159 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 160 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 161 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 162
 163 /* U-APSD max SP length for WMM IEs sent by STA */
 164 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 165 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 166 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 167 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 168 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 169 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 170
 171 #define IEEE80211_HT_CTL_LEN            4
 172
 173 struct ieee80211_hdr {
 174         __le16 frame_control;
 175         __le16 duration_id;
 176         u8 addr1[6];
 177         u8 addr2[6];
 178         u8 addr3[6];
 179         __le16 seq_ctrl;
 180         u8 addr4[6];
 181 } __attribute__ ((packed));
 182
 183 struct ieee80211_hdr_3addr {
 184         __le16 frame_control;
 185         __le16 duration_id;
 186         u8 addr1[6];
 187         u8 addr2[6];
 188         u8 addr3[6];
 189         __le16 seq_ctrl;
 190 } __attribute__ ((packed));
 191
 192 struct ieee80211_qos_hdr {
 193         __le16 frame_control;
 194         __le16 duration_id;
 195         u8 addr1[6];
 196         u8 addr2[6];
 197         u8 addr3[6];
 198         __le16 seq_ctrl;
 199         __le16 qos_ctrl;
 200 } __attribute__ ((packed));
 201
 202 /**
 203  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 204  * @fc: frame control bytes in little-endian byteorder
 205  */
 206 static inline int ieee80211_has_tods(__le16 fc)
 207 {
 208         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 209 }
 210
 211 /**
 212  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 213  * @fc: frame control bytes in little-endian byteorder
 214  */
 215 static inline int ieee80211_has_fromds(__le16 fc)
 216 {
 217         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 218 }
 219
 220 /**
 221  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 222  * @fc: frame control bytes in little-endian byteorder
 223  */
 224 static inline int ieee80211_has_a4(__le16 fc)
 225 {
 226         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 227         return (fc & tmp) == tmp;
 228 }
 229
 230 /**
 231  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 232  * @fc: frame control bytes in little-endian byteorder
 233  */
 234 static inline int ieee80211_has_morefrags(__le16 fc)
 235 {
 236         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 237 }
 238
 239 /**
 240  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 241  * @fc: frame control bytes in little-endian byteorder
 242  */
 243 static inline int ieee80211_has_retry(__le16 fc)
 244 {
 245         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 246 }
 247
 248 /**
 249  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 250  * @fc: frame control bytes in little-endian byteorder
 251  */
 252 static inline int ieee80211_has_pm(__le16 fc)
 253 {
 254         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 255 }
 256
 257 /**
 258  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 259  * @fc: frame control bytes in little-endian byteorder
 260  */
 261 static inline int ieee80211_has_moredata(__le16 fc)
 262 {
 263         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 264 }
 265
 266 /**
 267  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 268  * @fc: frame control bytes in little-endian byteorder
 269  */
 270 static inline int ieee80211_has_protected(__le16 fc)
 271 {
 272         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 273 }
 274
 275 /**
 276  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 277  * @fc: frame control bytes in little-endian byteorder
 278  */
 279 static inline int ieee80211_has_order(__le16 fc)
 280 {
 281         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 282 }
 283
 284 /**
 285  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 286  * @fc: frame control bytes in little-endian byteorder
 287  */
 288 static inline int ieee80211_is_mgmt(__le16 fc)
 289 {
 290         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 291                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 292 }
 293
 294 /**
 295  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 296  * @fc: frame control bytes in little-endian byteorder
 297  */
 298 static inline int ieee80211_is_ctl(__le16 fc)
 299 {
 300         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 301                cpu_to_le16(IEEE80211_FTYPE_CTL);
 302 }
 303
 304 /**
 305  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 306  * @fc: frame control bytes in little-endian byteorder
 307  */
 308 static inline int ieee80211_is_data(__le16 fc)
 309 {
 310         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 311                cpu_to_le16(IEEE80211_FTYPE_DATA);
 312 }
 313
 314 /**
 315  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 316  * @fc: frame control bytes in little-endian byteorder
 317  */
 318 static inline int ieee80211_is_data_qos(__le16 fc)
 319 {
 320         /*
 321          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 322          * to check the one bit
 323          */
 324         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 325                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 326 }
 327
 328 /**
 329  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 330  * @fc: frame control bytes in little-endian byteorder
 331  */
 332 static inline int ieee80211_is_data_present(__le16 fc)
 333 {
 334         /*
 335          * mask with 0x40 and test that that bit is clear to only return true
 336          * for the data-containing substypes.
 337          */
 338         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 339                cpu_to_le16(IEEE80211_FTYPE_DATA);
 340 }
 341
 342 /**
 343  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 344  * @fc: frame control bytes in little-endian byteorder
 345  */
 346 static inline int ieee80211_is_assoc_req(__le16 fc)
 347 {
 348         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 349                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 350 }
 351
 352 /**
 353  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 354  * @fc: frame control bytes in little-endian byteorder
 355  */
 356 static inline int ieee80211_is_assoc_resp(__le16 fc)
 357 {
 358         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 359                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 360 }
 361
 362 /**
 363  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 364  * @fc: frame control bytes in little-endian byteorder
 365  */
 366 static inline int ieee80211_is_reassoc_req(__le16 fc)
 367 {
 368         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 369                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 370 }
 371
 372 /**
 373  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 374  * @fc: frame control bytes in little-endian byteorder
 375  */
 376 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 377 {
 378         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 379                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 380 }
 381
 382 /**
 383  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 384  * @fc: frame control bytes in little-endian byteorder
 385  */
 386 static inline int ieee80211_is_probe_req(__le16 fc)
 387 {
 388         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 389                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 390 }
 391
 392 /**
 393  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 394  * @fc: frame control bytes in little-endian byteorder
 395  */
 396 static inline int ieee80211_is_probe_resp(__le16 fc)
 397 {
 398         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 399                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 400 }
 401
 402 /**
 403  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 404  * @fc: frame control bytes in little-endian byteorder
 405  */
 406 static inline int ieee80211_is_beacon(__le16 fc)
 407 {
 408         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 409                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 410 }
 411
 412 /**
 413  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 414  * @fc: frame control bytes in little-endian byteorder
 415  */
 416 static inline int ieee80211_is_atim(__le16 fc)
 417 {
 418         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 419                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 420 }
 421
 422 /**
 423  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 424  * @fc: frame control bytes in little-endian byteorder
 425  */
 426 static inline int ieee80211_is_disassoc(__le16 fc)
 427 {
 428         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 429                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 430 }
 431
 432 /**
 433  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 434  * @fc: frame control bytes in little-endian byteorder
 435  */
 436 static inline int ieee80211_is_auth(__le16 fc)
 437 {
 438         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 439                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 440 }
 441
 442 /**
 443  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 444  * @fc: frame control bytes in little-endian byteorder
 445  */
 446 static inline int ieee80211_is_deauth(__le16 fc)
 447 {
 448         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 449                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 450 }
 451
 452 /**
 453  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 454  * @fc: frame control bytes in little-endian byteorder
 455  */
 456 static inline int ieee80211_is_action(__le16 fc)
 457 {
 458         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 459                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 460 }
 461
 462 /**
 463  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 464  * @fc: frame control bytes in little-endian byteorder
 465  */
 466 static inline int ieee80211_is_back_req(__le16 fc)
 467 {
 468         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 469                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 470 }
 471
 472 /**
 473  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 474  * @fc: frame control bytes in little-endian byteorder
 475  */
 476 static inline int ieee80211_is_back(__le16 fc)
 477 {
 478         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 479                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 480 }
 481
 482 /**
 483  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 484  * @fc: frame control bytes in little-endian byteorder
 485  */
 486 static inline int ieee80211_is_pspoll(__le16 fc)
 487 {
 488         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 489                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 490 }
 491
 492 /**
 493  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 494  * @fc: frame control bytes in little-endian byteorder
 495  */
 496 static inline int ieee80211_is_rts(__le16 fc)
 497 {
 498         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 499                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 500 }
 501
 502 /**
 503  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 504  * @fc: frame control bytes in little-endian byteorder
 505  */
 506 static inline int ieee80211_is_cts(__le16 fc)
 507 {
 508         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 509                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 510 }
 511
 512 /**
 513  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 514  * @fc: frame control bytes in little-endian byteorder
 515  */
 516 static inline int ieee80211_is_ack(__le16 fc)
 517 {
 518         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 519                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 520 }
 521
 522 /**
 523  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 524  * @fc: frame control bytes in little-endian byteorder
 525  */
 526 static inline int ieee80211_is_cfend(__le16 fc)
 527 {
 528         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 529                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 530 }
 531
 532 /**
 533  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 534  * @fc: frame control bytes in little-endian byteorder
 535  */
 536 static inline int ieee80211_is_cfendack(__le16 fc)
 537 {
 538         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 539                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 540 }
 541
 542 /**
 543  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 544  * @fc: frame control bytes in little-endian byteorder
 545  */
 546 static inline int ieee80211_is_nullfunc(__le16 fc)
 547 {
 548         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 549                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 550 }
 551
 552 /**
 553  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 554  * @fc: frame control bytes in little-endian byteorder
 555  */
 556 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 557 {
 558         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 559                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 560 }
 561
 562 /**
 563  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 564  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 565  */
 566 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 567 {
 568         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 569 }
 570
 571 struct ieee80211s_hdr {
 572         u8 flags;
 573         u8 ttl;
 574         __le32 seqnum;
 575         u8 eaddr1[6];
 576         u8 eaddr2[6];
 577 } __attribute__ ((packed));
 578
 579 /* Mesh flags */
 580 #define MESH_FLAGS_AE_A4        0x1
 581 #define MESH_FLAGS_AE_A5_A6     0x2
 582 #define MESH_FLAGS_AE           0x3
 583 #define MESH_FLAGS_PS_DEEP      0x4
 584
 585 /**
 586  * enum ieee80211_preq_flags - mesh PREQ element flags
 587  *
 588  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 589  */
 590 enum ieee80211_preq_flags {
 591         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 592 };
 593
 594 /**
 595  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 596  *
 597  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 598  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 599  */
 600 enum ieee80211_preq_target_flags {
 601         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 602         IEEE80211_PREQ_USN_FLAG = 1<<2,
 603 };
 604
 605 /**
 606  * struct ieee80211_quiet_ie
 607  *
 608  * This structure refers to "Quiet information element"
 609  */
 610 struct ieee80211_quiet_ie {
 611         u8 count;
 612         u8 period;
 613         __le16 duration;
 614         __le16 offset;
 615 } __attribute__ ((packed));
 616
 617 /**
 618  * struct ieee80211_msrment_ie
 619  *
 620  * This structure refers to "Measurement Request/Report information element"
 621  */
 622 struct ieee80211_msrment_ie {
 623         u8 token;
 624         u8 mode;
 625         u8 type;
 626         u8 request[0];
 627 } __attribute__ ((packed));
 628
 629 /**
 630  * struct ieee80211_channel_sw_ie
 631  *
 632  * This structure refers to "Channel Switch Announcement information element"
 633  */
 634 struct ieee80211_channel_sw_ie {
 635         u8 mode;
 636         u8 new_ch_num;
 637         u8 count;
 638 } __attribute__ ((packed));
 639
 640 /**
 641  * struct ieee80211_tim
 642  *
 643  * This structure refers to "Traffic Indication Map information element"
 644  */
 645 struct ieee80211_tim_ie {
 646         u8 dtim_count;
 647         u8 dtim_period;
 648         u8 bitmap_ctrl;
 649         /* variable size: 1 - 251 bytes */
 650         u8 virtual_map[1];
 651 } __attribute__ ((packed));
 652
 653 /**
 654  * struct ieee80211_meshconf_ie
 655  *
 656  * This structure refers to "Mesh Configuration information element"
 657  */
 658 struct ieee80211_meshconf_ie {
 659         u8 meshconf_psel;
 660         u8 meshconf_pmetric;
 661         u8 meshconf_congest;
 662         u8 meshconf_synch;
 663         u8 meshconf_auth;
 664         u8 meshconf_form;
 665         u8 meshconf_cap;
 666 } __attribute__ ((packed));
 667
 668 /**
 669  * struct ieee80211_rann_ie
 670  *
 671  * This structure refers to "Root Announcement information element"
 672  */
 673 struct ieee80211_rann_ie {
 674         u8 rann_flags;
 675         u8 rann_hopcount;
 676         u8 rann_ttl;
 677         u8 rann_addr[6];
 678         __le32 rann_seq;
 679         __le32 rann_interval;
 680         __le32 rann_metric;
 681 } __attribute__ ((packed));
 682
 683 enum ieee80211_rann_flags {
 684         RANN_FLAG_IS_GATE = 1 << 0,
 685 };
 686
 687 #define WLAN_SA_QUERY_TR_ID_LEN 2
 688
 689 struct ieee80211_mgmt {
 690         __le16 frame_control;
 691         __le16 duration;
 692         u8 da[6];
 693         u8 sa[6];
 694         u8 bssid[6];
 695         __le16 seq_ctrl;
 696         union {
 697                 struct {
 698                         __le16 auth_alg;
 699                         __le16 auth_transaction;
 700                         __le16 status_code;
 701                         /* possibly followed by Challenge text */
 702                         u8 variable[0];
 703                 } __attribute__ ((packed)) auth;
 704                 struct {
 705                         __le16 reason_code;
 706                 } __attribute__ ((packed)) deauth;
 707                 struct {
 708                         __le16 capab_info;
 709                         __le16 listen_interval;
 710                         /* followed by SSID and Supported rates */
 711                         u8 variable[0];
 712                 } __attribute__ ((packed)) assoc_req;
 713                 struct {
 714                         __le16 capab_info;
 715                         __le16 status_code;
 716                         __le16 aid;
 717                         /* followed by Supported rates */
 718                         u8 variable[0];
 719                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 720                 struct {
 721                         __le16 capab_info;
 722                         __le16 listen_interval;
 723                         u8 current_ap[6];
 724                         /* followed by SSID and Supported rates */
 725                         u8 variable[0];
 726                 } __attribute__ ((packed)) reassoc_req;
 727                 struct {
 728                         __le16 reason_code;
 729                 } __attribute__ ((packed)) disassoc;
 730                 struct {
 731                         __le64 timestamp;
 732                         __le16 beacon_int;
 733                         __le16 capab_info;
 734                         /* followed by some of SSID, Supported rates,
 735                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 736                         u8 variable[0];
 737                 } __attribute__ ((packed)) beacon;
 738                 struct {
 739                         /* only variable items: SSID, Supported rates */
 740                         u8 variable[0];
 741                 } __attribute__ ((packed)) probe_req;
 742                 struct {
 743                         __le64 timestamp;
 744                         __le16 beacon_int;
 745                         __le16 capab_info;
 746                         /* followed by some of SSID, Supported rates,
 747                          * FH Params, DS Params, CF Params, IBSS Params */
 748                         u8 variable[0];
 749                 } __attribute__ ((packed)) probe_resp;
 750                 struct {
 751                         u8 category;
 752                         union {
 753                                 struct {
 754                                         u8 action_code;
 755                                         u8 dialog_token;
 756                                         u8 status_code;
 757                                         u8 variable[0];
 758                                 } __attribute__ ((packed)) wme_action;
 759                                 struct{
 760                                         u8 action_code;
 761                                         u8 element_id;
 762                                         u8 length;
 763                                         struct ieee80211_channel_sw_ie sw_elem;
 764                                 } __attribute__((packed)) chan_switch;
 765                                 struct{
 766                                         u8 action_code;
 767                                         u8 dialog_token;
 768                                         u8 element_id;
 769                                         u8 length;
 770                                         struct ieee80211_msrment_ie msr_elem;
 771                                 } __attribute__((packed)) measurement;
 772                                 struct{
 773                                         u8 action_code;
 774                                         u8 dialog_token;
 775                                         __le16 capab;
 776                                         __le16 timeout;
 777                                         __le16 start_seq_num;
 778                                 } __attribute__((packed)) addba_req;
 779                                 struct{
 780                                         u8 action_code;
 781                                         u8 dialog_token;
 782                                         __le16 status;
 783                                         __le16 capab;
 784                                         __le16 timeout;
 785                                 } __attribute__((packed)) addba_resp;
 786                                 struct{
 787                                         u8 action_code;
 788                                         __le16 params;
 789                                         __le16 reason_code;
 790                                 } __attribute__((packed)) delba;
 791                                 struct {
 792                                         u8 action_code;
 793                                         u8 variable[0];
 794                                 } __attribute__((packed)) self_prot;
 795                                 struct{
 796                                         u8 action_code;
 797                                         u8 variable[0];
 798                                 } __attribute__((packed)) mesh_action;
 799                                 struct {
 800                                         u8 action;
 801                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 802                                 } __attribute__ ((packed)) sa_query;
 803                                 struct {
 804                                         u8 action;
 805                                         u8 smps_control;
 806                                 } __attribute__ ((packed)) ht_smps;
 807                                 struct {
 808                                         u8 action_code;
 809                                         u8 dialog_token;
 810                                         __le16 capability;
 811                                         u8 variable[0];
 812                                 } __packed tdls_discover_resp;
 813                         } u;
 814                 } __attribute__ ((packed)) action;
 815         } u;
 816 } __attribute__ ((packed));
 817
 818 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 819 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 820
 821 /* mgmt header + 1 byte category code */
 822 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 823
 824
 825 /* Management MIC information element (IEEE 802.11w) */
 826 struct ieee80211_mmie {
 827         u8 element_id;
 828         u8 length;
 829         __le16 key_id;
 830         u8 sequence_number[6];
 831         u8 mic[8];
 832 } __attribute__ ((packed));
 833
 834 struct ieee80211_vendor_ie {
 835         u8 element_id;
 836         u8 len;
 837         u8 oui[3];
 838         u8 oui_type;
 839 } __packed;
 840
 841 /* Control frames */
 842 struct ieee80211_rts {
 843         __le16 frame_control;
 844         __le16 duration;
 845         u8 ra[6];
 846         u8 ta[6];
 847 } __attribute__ ((packed));
 848
 849 struct ieee80211_cts {
 850         __le16 frame_control;
 851         __le16 duration;
 852         u8 ra[6];
 853 } __attribute__ ((packed));
 854
 855 struct ieee80211_pspoll {
 856         __le16 frame_control;
 857         __le16 aid;
 858         u8 bssid[6];
 859         u8 ta[6];
 860 } __attribute__ ((packed));
 861
 862 /* TDLS */
 863
 864 /* Link-id information element */
 865 struct ieee80211_tdls_lnkie {
 866         u8 ie_type; /* Link Identifier IE */
 867         u8 ie_len;
 868         u8 bssid[6];
 869         u8 init_sta[6];
 870         u8 resp_sta[6];
 871 } __packed;
 872
 873 struct ieee80211_tdls_data {
 874         u8 da[6];
 875         u8 sa[6];
 876         __be16 ether_type;
 877         u8 payload_type;
 878         u8 category;
 879         u8 action_code;
 880         union {
 881                 struct {
 882                         u8 dialog_token;
 883                         __le16 capability;
 884                         u8 variable[0];
 885                 } __packed setup_req;
 886                 struct {
 887                         __le16 status_code;
 888                         u8 dialog_token;
 889                         __le16 capability;
 890                         u8 variable[0];
 891                 } __packed setup_resp;
 892                 struct {
 893                         __le16 status_code;
 894                         u8 dialog_token;
 895                         u8 variable[0];
 896                 } __packed setup_cfm;
 897                 struct {
 898                         __le16 reason_code;
 899                         u8 variable[0];
 900                 } __packed teardown;
 901                 struct {
 902                         u8 dialog_token;
 903                         u8 variable[0];
 904                 } __packed discover_req;
 905         } u;
 906 } __packed;
 907
 908 /*
 909  * Peer-to-Peer IE attribute related definitions.
 910  */
 911 /**
 912  * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute.
 913  */
 914 enum ieee80211_p2p_attr_id {
 915         IEEE80211_P2P_ATTR_STATUS = 0,
 916         IEEE80211_P2P_ATTR_MINOR_REASON,
 917         IEEE80211_P2P_ATTR_CAPABILITY,
 918         IEEE80211_P2P_ATTR_DEVICE_ID,
 919         IEEE80211_P2P_ATTR_GO_INTENT,
 920         IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT,
 921         IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
 922         IEEE80211_P2P_ATTR_GROUP_BSSID,
 923         IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING,
 924         IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR,
 925         IEEE80211_P2P_ATTR_MANAGABILITY,
 926         IEEE80211_P2P_ATTR_CHANNEL_LIST,
 927         IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
 928         IEEE80211_P2P_ATTR_DEVICE_INFO,
 929         IEEE80211_P2P_ATTR_GROUP_INFO,
 930         IEEE80211_P2P_ATTR_GROUP_ID,
 931         IEEE80211_P2P_ATTR_INTERFACE,
 932         IEEE80211_P2P_ATTR_OPER_CHANNEL,
 933         IEEE80211_P2P_ATTR_INVITE_FLAGS,
 934         /* 19 - 220: Reserved */
 935         IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221,
 936
 937         IEEE80211_P2P_ATTR_MAX
 938 };
 939
 940 /**
 941  * struct ieee80211_bar - HT Block Ack Request
 942  *
 943  * This structure refers to "HT BlockAckReq" as
 944  * described in 802.11n draft section 7.2.1.7.1
 945  */
 946 struct ieee80211_bar {
 947         __le16 frame_control;
 948         __le16 duration;
 949         __u8 ra[6];
 950         __u8 ta[6];
 951         __le16 control;
 952         __le16 start_seq_num;
 953 } __attribute__((packed));
 954
 955 /* 802.11 BAR control masks */
 956 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 957 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 958 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 959 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 960 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 961
 962 #define IEEE80211_HT_MCS_MASK_LEN               10
 963
 964 /**
 965  * struct ieee80211_mcs_info - MCS information
 966  * @rx_mask: RX mask
 967  * @rx_highest: highest supported RX rate. If set represents
 968  *      the highest supported RX data rate in units of 1 Mbps.
 969  *      If this field is 0 this value should not be used to
 970  *      consider the highest RX data rate supported.
 971  * @tx_params: TX parameters
 972  */
 973 struct ieee80211_mcs_info {
 974         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 975         __le16 rx_highest;
 976         u8 tx_params;
 977         u8 reserved[3];
 978 } __attribute__((packed));
 979
 980 /* 802.11n HT capability MSC set */
 981 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 982 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 983 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 984 /* value 0 == 1 stream etc */
 985 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 986 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 987 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 988 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 989
 990 /*
 991  * 802.11n D5.0 20.3.5 / 20.6 says:
 992  * - indices 0 to 7 and 32 are single spatial stream
 993  * - 8 to 31 are multiple spatial streams using equal modulation
 994  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 995  * - remainder are multiple spatial streams using unequal modulation
 996  */
 997 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 998 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 999         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
1000
1001 /**
1002  * struct ieee80211_ht_cap - HT capabilities
1003  *
1004  * This structure is the "HT capabilities element" as
1005  * described in 802.11n D5.0 7.3.2.57
1006  */
1007 struct ieee80211_ht_cap {
1008         __le16 cap_info;
1009         u8 ampdu_params_info;
1010
1011         /* 16 bytes MCS information */
1012         struct ieee80211_mcs_info mcs;
1013
1014         __le16 extended_ht_cap_info;
1015         __le32 tx_BF_cap_info;
1016         u8 antenna_selection_info;
1017 } __attribute__ ((packed));
1018
1019 /* 802.11n HT capabilities masks (for cap_info) */
1020 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1021 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1022 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1023 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1024 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1025 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1026 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1027 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1028 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1029 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1030 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1031 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1032 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1033 #define IEEE80211_HT_CAP_RESERVED               0x2000
1034 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1035 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1036
1037 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1038 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1039 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1040 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1041 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1042 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1043 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1044 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1045
1046 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1047 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1048 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1049 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1050
1051 /*
1052  * Maximum length of AMPDU that the STA can receive.
1053  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1054  */
1055 enum ieee80211_max_ampdu_length_exp {
1056         IEEE80211_HT_MAX_AMPDU_8K = 0,
1057         IEEE80211_HT_MAX_AMPDU_16K = 1,
1058         IEEE80211_HT_MAX_AMPDU_32K = 2,
1059         IEEE80211_HT_MAX_AMPDU_64K = 3
1060 };
1061
1062 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1063
1064 /* Minimum MPDU start spacing */
1065 enum ieee80211_min_mpdu_spacing {
1066         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1067         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1068         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1069         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1070         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1071         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1072         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1073         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1074 };
1075
1076 /**
1077  * struct ieee80211_ht_operation - HT operation IE
1078  *
1079  * This structure is the "HT operation element" as
1080  * described in 802.11n-2009 7.3.2.57
1081  */
1082 struct ieee80211_ht_operation {
1083         u8 primary_chan;
1084         u8 ht_param;
1085         __le16 operation_mode;
1086         __le16 stbc_param;
1087         u8 basic_set[16];
1088 } __attribute__ ((packed));
1089
1090 /* for ht_param */
1091 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1092 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1093 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1094 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1095 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1096 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1097
1098 /* for operation_mode */
1099 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1100 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1101 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1102 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1103 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1104 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1105 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1106
1107 /* for stbc_param */
1108 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1109 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1110 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1111 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1112 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1113 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1114
1115
1116 /* block-ack parameters */
1117 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1118 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1119 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1120 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1121 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1122
1123 /*
1124  * A-PMDU buffer sizes
1125  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1126  */
1127 #define IEEE80211_MIN_AMPDU_BUF 0x8
1128 #define IEEE80211_MAX_AMPDU_BUF 0x40
1129
1130
1131 /* Spatial Multiplexing Power Save Modes (for capability) */
1132 #define WLAN_HT_CAP_SM_PS_STATIC        0
1133 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1134 #define WLAN_HT_CAP_SM_PS_INVALID       2
1135 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1136
1137 /* for SM power control field lower two bits */
1138 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1139 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1140 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1141
1142 /**
1143  * struct ieee80211_vht_mcs_info - VHT MCS information
1144  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1145  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1146  *      STA can receive. Rate expressed in units of 1 Mbps.
1147  *      If this field is 0 this value should not be used to
1148  *      consider the highest RX data rate supported.
1149  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1150  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1151  *      STA can transmit. Rate expressed in units of 1 Mbps.
1152  *      If this field is 0 this value should not be used to
1153  *      consider the highest TX data rate supported.
1154  */
1155 struct ieee80211_vht_mcs_info {
1156         __le16 rx_mcs_map;
1157         __le16 rx_highest;
1158         __le16 tx_mcs_map;
1159         __le16 tx_highest;
1160 } __packed;
1161
1162 /**
1163  * struct ieee80211_vht_cap - VHT capabilities
1164  *
1165  * This structure is the "VHT capabilities element" as
1166  * described in 802.11ac D3.0 8.4.2.160
1167  * @vht_cap_info: VHT capability info
1168  * @supp_mcs: VHT MCS supported rates
1169  */
1170 struct ieee80211_vht_cap {
1171         __le32 vht_cap_info;
1172         struct ieee80211_vht_mcs_info supp_mcs;
1173 } __packed;
1174
1175 /**
1176  * struct ieee80211_vht_operation - VHT operation IE
1177  *
1178  * This structure is the "VHT operation element" as
1179  * described in 802.11ac D3.0 8.4.2.161
1180  * @chan_width: Operating channel width
1181  * @center_freq_seg1_idx: center freq segment 1 index
1182  * @center_freq_seg2_idx: center freq segment 2 index
1183  * @basic_mcs_set: VHT Basic MCS rate set
1184  */
1185 struct ieee80211_vht_operation {
1186         u8 chan_width;
1187         u8 center_freq_seg1_idx;
1188         u8 center_freq_seg2_idx;
1189         __le16 basic_mcs_set;
1190 } __packed;
1191
1192
1193 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1194 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1195 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1196 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1197
1198 /* 802.11ac VHT Capabilities */
1199 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                0x00000000
1200 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                0x00000001
1201 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454               0x00000002
1202 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              0x00000004
1203 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     0x00000008
1204 #define IEEE80211_VHT_CAP_RXLDPC                              0x00000010
1205 #define IEEE80211_VHT_CAP_SHORT_GI_80                         0x00000020
1206 #define IEEE80211_VHT_CAP_SHORT_GI_160                        0x00000040
1207 #define IEEE80211_VHT_CAP_TXSTBC                              0x00000080
1208 #define IEEE80211_VHT_CAP_RXSTBC_1                            0x00000100
1209 #define IEEE80211_VHT_CAP_RXSTBC_2                            0x00000200
1210 #define IEEE80211_VHT_CAP_RXSTBC_3                            0x00000300
1211 #define IEEE80211_VHT_CAP_RXSTBC_4                            0x00000400
1212 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE               0x00000800
1213 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE               0x00001000
1214 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX             0x00006000
1215 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX              0x00030000
1216 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE               0x00080000
1217 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE               0x00100000
1218 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                         0x00200000
1219 #define IEEE80211_VHT_CAP_HTC_VHT                             0x00400000
1220 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          0x00800000
1221 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   0x08000000
1222 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     0x0c000000
1223 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                  0x10000000
1224 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                  0x20000000
1225
1226 /* Authentication algorithms */
1227 #define WLAN_AUTH_OPEN 0
1228 #define WLAN_AUTH_SHARED_KEY 1
1229 #define WLAN_AUTH_FT 2
1230 #define WLAN_AUTH_SAE 3
1231 #define WLAN_AUTH_LEAP 128
1232
1233 #define WLAN_AUTH_CHALLENGE_LEN 128
1234
1235 #define WLAN_CAPABILITY_ESS             (1<<0)
1236 #define WLAN_CAPABILITY_IBSS            (1<<1)
1237
1238 /*
1239  * A mesh STA sets the ESS and IBSS capability bits to zero.
1240  * however, this holds true for p2p probe responses (in the p2p_find
1241  * phase) as well.
1242  */
1243 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1244         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1245
1246 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1247 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1248 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1249 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1250 #define WLAN_CAPABILITY_PBCC            (1<<6)
1251 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1252
1253 /* 802.11h */
1254 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1255 #define WLAN_CAPABILITY_QOS             (1<<9)
1256 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1257 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1258
1259 /* DMG (60gHz) 802.11ad */
1260 /* type - bits 0..1 */
1261 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1262 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1263 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1264
1265 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1266 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1267 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1268 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1269
1270 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1271 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1272
1273 /* measurement */
1274 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1275 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1276 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1277
1278 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1279 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1280 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1281
1282 /* 802.11g ERP information element */
1283 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1284 #define WLAN_ERP_USE_PROTECTION (1<<1)
1285 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1286
1287 /* WLAN_ERP_BARKER_PREAMBLE values */
1288 enum {
1289         WLAN_ERP_PREAMBLE_SHORT = 0,
1290         WLAN_ERP_PREAMBLE_LONG = 1,
1291 };
1292
1293 /* Band ID, 802.11ad #8.4.1.45 */
1294 enum {
1295         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1296         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1297         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1298         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1299         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1300         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1301 };
1302
1303 /* Status codes */
1304 enum ieee80211_statuscode {
1305         WLAN_STATUS_SUCCESS = 0,
1306         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1307         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1308         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1309         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1310         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1311         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1312         WLAN_STATUS_CHALLENGE_FAIL = 15,
1313         WLAN_STATUS_AUTH_TIMEOUT = 16,
1314         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1315         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1316         /* 802.11b */
1317         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1318         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1319         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1320         /* 802.11h */
1321         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1322         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1323         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1324         /* 802.11g */
1325         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1326         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1327         /* 802.11w */
1328         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1329         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1330         /* 802.11i */
1331         WLAN_STATUS_INVALID_IE = 40,
1332         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1333         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1334         WLAN_STATUS_INVALID_AKMP = 43,
1335         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1336         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1337         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1338         /* 802.11e */
1339         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1340         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1341         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1342         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1343         WLAN_STATUS_REQUEST_DECLINED = 37,
1344         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1345         WLAN_STATUS_CHANGE_TSPEC = 39,
1346         WLAN_STATUS_WAIT_TS_DELAY = 47,
1347         WLAN_STATUS_NO_DIRECT_LINK = 48,
1348         WLAN_STATUS_STA_NOT_PRESENT = 49,
1349         WLAN_STATUS_STA_NOT_QSTA = 50,
1350         /* 802.11s */
1351         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1352         WLAN_STATUS_FCG_NOT_SUPP = 78,
1353         WLAN_STATUS_STA_NO_TBTT = 78,
1354         /* 802.11ad */
1355         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1356         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1357         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1358         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1359         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1360         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1361         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1362         WLAN_STATUS_REJECT_DSE_BAND = 96,
1363         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1364         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1365 };
1366
1367
1368 /* Reason codes */
1369 enum ieee80211_reasoncode {
1370         WLAN_REASON_UNSPECIFIED = 1,
1371         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1372         WLAN_REASON_DEAUTH_LEAVING = 3,
1373         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1374         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1375         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1376         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1377         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1378         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1379         /* 802.11h */
1380         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1381         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1382         /* 802.11i */
1383         WLAN_REASON_INVALID_IE = 13,
1384         WLAN_REASON_MIC_FAILURE = 14,
1385         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1386         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1387         WLAN_REASON_IE_DIFFERENT = 17,
1388         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1389         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1390         WLAN_REASON_INVALID_AKMP = 20,
1391         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1392         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1393         WLAN_REASON_IEEE8021X_FAILED = 23,
1394         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1395         /* 802.11e */
1396         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1397         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1398         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1399         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1400         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1401         WLAN_REASON_QSTA_NOT_USE = 37,
1402         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1403         WLAN_REASON_QSTA_TIMEOUT = 39,
1404         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1405         /* 802.11s */
1406         WLAN_REASON_MESH_PEER_CANCELED = 52,
1407         WLAN_REASON_MESH_MAX_PEERS = 53,
1408         WLAN_REASON_MESH_CONFIG = 54,
1409         WLAN_REASON_MESH_CLOSE = 55,
1410         WLAN_REASON_MESH_MAX_RETRIES = 56,
1411         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1412         WLAN_REASON_MESH_INVALID_GTK = 58,
1413         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1414         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1415         WLAN_REASON_MESH_PATH_ERROR = 61,
1416         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1417         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1418         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1419         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1420         WLAN_REASON_MESH_CHAN = 66,
1421 };
1422
1423
1424 /* Information Element IDs */
1425 enum ieee80211_eid {
1426         WLAN_EID_SSID = 0,
1427         WLAN_EID_SUPP_RATES = 1,
1428         WLAN_EID_FH_PARAMS = 2,
1429         WLAN_EID_DS_PARAMS = 3,
1430         WLAN_EID_CF_PARAMS = 4,
1431         WLAN_EID_TIM = 5,
1432         WLAN_EID_IBSS_PARAMS = 6,
1433         WLAN_EID_CHALLENGE = 16,
1434
1435         WLAN_EID_COUNTRY = 7,
1436         WLAN_EID_HP_PARAMS = 8,
1437         WLAN_EID_HP_TABLE = 9,
1438         WLAN_EID_REQUEST = 10,
1439
1440         WLAN_EID_QBSS_LOAD = 11,
1441         WLAN_EID_EDCA_PARAM_SET = 12,
1442         WLAN_EID_TSPEC = 13,
1443         WLAN_EID_TCLAS = 14,
1444         WLAN_EID_SCHEDULE = 15,
1445         WLAN_EID_TS_DELAY = 43,
1446         WLAN_EID_TCLAS_PROCESSING = 44,
1447         WLAN_EID_QOS_CAPA = 46,
1448         /* 802.11z */
1449         WLAN_EID_LINK_ID = 101,
1450         /* 802.11s */
1451         WLAN_EID_MESH_CONFIG = 113,
1452         WLAN_EID_MESH_ID = 114,
1453         WLAN_EID_LINK_METRIC_REPORT = 115,
1454         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1455         WLAN_EID_PEER_MGMT = 117,
1456         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1457         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1458         WLAN_EID_BEACON_TIMING = 120,
1459         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1460         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1461         WLAN_EID_MCCAOP_ADVERT = 123,
1462         WLAN_EID_MCCAOP_TEARDOWN = 124,
1463         WLAN_EID_GANN = 125,
1464         WLAN_EID_RANN = 126,
1465         WLAN_EID_PREQ = 130,
1466         WLAN_EID_PREP = 131,
1467         WLAN_EID_PERR = 132,
1468         WLAN_EID_PXU = 137,
1469         WLAN_EID_PXUC = 138,
1470         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1471         WLAN_EID_MIC = 140,
1472
1473         WLAN_EID_PWR_CONSTRAINT = 32,
1474         WLAN_EID_PWR_CAPABILITY = 33,
1475         WLAN_EID_TPC_REQUEST = 34,
1476         WLAN_EID_TPC_REPORT = 35,
1477         WLAN_EID_SUPPORTED_CHANNELS = 36,
1478         WLAN_EID_CHANNEL_SWITCH = 37,
1479         WLAN_EID_MEASURE_REQUEST = 38,
1480         WLAN_EID_MEASURE_REPORT = 39,
1481         WLAN_EID_QUIET = 40,
1482         WLAN_EID_IBSS_DFS = 41,
1483
1484         WLAN_EID_ERP_INFO = 42,
1485         WLAN_EID_EXT_SUPP_RATES = 50,
1486
1487         WLAN_EID_HT_CAPABILITY = 45,
1488         WLAN_EID_HT_OPERATION = 61,
1489
1490         WLAN_EID_RSN = 48,
1491         WLAN_EID_MMIE = 76,
1492         WLAN_EID_VENDOR_SPECIFIC = 221,
1493         WLAN_EID_QOS_PARAMETER = 222,
1494
1495         WLAN_EID_AP_CHAN_REPORT = 51,
1496         WLAN_EID_NEIGHBOR_REPORT = 52,
1497         WLAN_EID_RCPI = 53,
1498         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1499         WLAN_EID_ANTENNA_INFO = 64,
1500         WLAN_EID_RSNI = 65,
1501         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1502         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1503         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1504         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1505         WLAN_EID_MULTIPLE_BSSID = 71,
1506         WLAN_EID_BSS_COEX_2040 = 72,
1507         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1508         WLAN_EID_EXT_CAPABILITY = 127,
1509
1510         WLAN_EID_MOBILITY_DOMAIN = 54,
1511         WLAN_EID_FAST_BSS_TRANSITION = 55,
1512         WLAN_EID_TIMEOUT_INTERVAL = 56,
1513         WLAN_EID_RIC_DATA = 57,
1514         WLAN_EID_RIC_DESCRIPTOR = 75,
1515
1516         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1517         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1518         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1519
1520         WLAN_EID_VHT_CAPABILITY = 191,
1521         WLAN_EID_VHT_OPERATION = 192,
1522
1523         /* 802.11ad */
1524         WLAN_EID_NON_TX_BSSID_CAP =  83,
1525         WLAN_EID_WAKEUP_SCHEDULE = 143,
1526         WLAN_EID_EXT_SCHEDULE = 144,
1527         WLAN_EID_STA_AVAILABILITY = 145,
1528         WLAN_EID_DMG_TSPEC = 146,
1529         WLAN_EID_DMG_AT = 147,
1530         WLAN_EID_DMG_CAP = 148,
1531         WLAN_EID_DMG_OPERATION = 151,
1532         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1533         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1534         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1535         WLAN_EID_AWAKE_WINDOW = 157,
1536         WLAN_EID_MULTI_BAND = 158,
1537         WLAN_EID_ADDBA_EXT = 159,
1538         WLAN_EID_NEXT_PCP_LIST = 160,
1539         WLAN_EID_PCP_HANDOVER = 161,
1540         WLAN_EID_DMG_LINK_MARGIN = 162,
1541         WLAN_EID_SWITCHING_STREAM = 163,
1542         WLAN_EID_SESSION_TRANSITION = 164,
1543         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1544         WLAN_EID_CLUSTER_REPORT = 166,
1545         WLAN_EID_RELAY_CAP = 167,
1546         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1547         WLAN_EID_BEAM_LINK_MAINT = 169,
1548         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1549         WLAN_EID_U_PID = 171,
1550         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1551         WLAN_EID_QUIET_PERIOD_REQ = 175,
1552         WLAN_EID_QUIET_PERIOD_RESP = 177,
1553         WLAN_EID_EPAC_POLICY = 182,
1554         WLAN_EID_CLISTER_TIME_OFF = 183,
1555         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1556 };
1557
1558 /* Action category code */
1559 enum ieee80211_category {
1560         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1561         WLAN_CATEGORY_QOS = 1,
1562         WLAN_CATEGORY_DLS = 2,
1563         WLAN_CATEGORY_BACK = 3,
1564         WLAN_CATEGORY_PUBLIC = 4,
1565         WLAN_CATEGORY_HT = 7,
1566         WLAN_CATEGORY_SA_QUERY = 8,
1567         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1568         WLAN_CATEGORY_TDLS = 12,
1569         WLAN_CATEGORY_MESH_ACTION = 13,
1570         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1571         WLAN_CATEGORY_SELF_PROTECTED = 15,
1572         WLAN_CATEGORY_DMG = 16,
1573         WLAN_CATEGORY_WMM = 17,
1574         WLAN_CATEGORY_FST = 18,
1575         WLAN_CATEGORY_UNPROT_DMG = 20,
1576         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1577         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1578 };
1579
1580 /* SPECTRUM_MGMT action code */
1581 enum ieee80211_spectrum_mgmt_actioncode {
1582         WLAN_ACTION_SPCT_MSR_REQ = 0,
1583         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1584         WLAN_ACTION_SPCT_TPC_REQ = 2,
1585         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1586         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1587 };
1588
1589 /* HT action codes */
1590 enum ieee80211_ht_actioncode {
1591         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1592         WLAN_HT_ACTION_SMPS = 1,
1593         WLAN_HT_ACTION_PSMP = 2,
1594         WLAN_HT_ACTION_PCO_PHASE = 3,
1595         WLAN_HT_ACTION_CSI = 4,
1596         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1597         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1598         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1599 };
1600
1601 /* Self Protected Action codes */
1602 enum ieee80211_self_protected_actioncode {
1603         WLAN_SP_RESERVED = 0,
1604         WLAN_SP_MESH_PEERING_OPEN = 1,
1605         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1606         WLAN_SP_MESH_PEERING_CLOSE = 3,
1607         WLAN_SP_MGK_INFORM = 4,
1608         WLAN_SP_MGK_ACK = 5,
1609 };
1610
1611 /* Mesh action codes */
1612 enum ieee80211_mesh_actioncode {
1613         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1614         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1615         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1616         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1617         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1618         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1619         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1620         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1621         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1622         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1623         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1624 };
1625
1626 /* Security key length */
1627 enum ieee80211_key_len {
1628         WLAN_KEY_LEN_WEP40 = 5,
1629         WLAN_KEY_LEN_WEP104 = 13,
1630         WLAN_KEY_LEN_CCMP = 16,
1631         WLAN_KEY_LEN_TKIP = 32,
1632         WLAN_KEY_LEN_AES_CMAC = 16,
1633 };
1634
1635 /* Public action codes */
1636 enum ieee80211_pub_actioncode {
1637         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1638 };
1639
1640 /* TDLS action codes */
1641 enum ieee80211_tdls_actioncode {
1642         WLAN_TDLS_SETUP_REQUEST = 0,
1643         WLAN_TDLS_SETUP_RESPONSE = 1,
1644         WLAN_TDLS_SETUP_CONFIRM = 2,
1645         WLAN_TDLS_TEARDOWN = 3,
1646         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1647         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1648         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1649         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1650         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1651         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1652         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1653 };
1654
1655 /*
1656  * TDLS capabililites to be enabled in the 5th byte of the
1657  * @WLAN_EID_EXT_CAPABILITY information element
1658  */
1659 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1660 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1661
1662 /* TDLS specific payload type in the LLC/SNAP header */
1663 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1664
1665 /**
1666  * enum - mesh synchronization method identifier
1667  *
1668  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1669  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1670  *      that will be specified in a vendor specific information element
1671  */
1672 enum {
1673         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1674         IEEE80211_SYNC_METHOD_VENDOR = 255,
1675 };
1676
1677 /**
1678  * enum - mesh path selection protocol identifier
1679  *
1680  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1681  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1682  *      be specified in a vendor specific information element
1683  */
1684 enum {
1685         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1686         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1687 };
1688
1689 /**
1690  * enum - mesh path selection metric identifier
1691  *
1692  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1693  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1694  *      specified in a vendor specific information element
1695  */
1696 enum {
1697         IEEE80211_PATH_METRIC_AIRTIME = 1,
1698         IEEE80211_PATH_METRIC_VENDOR = 255,
1699 };
1700
1701 /**
1702  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1703  *
1704  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1705  *
1706  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1707  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1708  *      this value
1709  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1710  *      the proactive PREQ with proactive PREP subfield set to 0
1711  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1712  *      supports the proactive PREQ with proactive PREP subfield set to 1
1713  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1714  *      the proactive RANN
1715  */
1716 enum ieee80211_root_mode_identifier {
1717         IEEE80211_ROOTMODE_NO_ROOT = 0,
1718         IEEE80211_ROOTMODE_ROOT = 1,
1719         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1720         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1721         IEEE80211_PROACTIVE_RANN = 4,
1722 };
1723
1724 /*
1725  * IEEE 802.11-2007 7.3.2.9 Country information element
1726  *
1727  * Minimum length is 8 octets, ie len must be evenly
1728  * divisible by 2
1729  */
1730
1731 /* Although the spec says 8 I'm seeing 6 in practice */
1732 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1733
1734 /* The Country String field of the element shall be 3 octets in length */
1735 #define IEEE80211_COUNTRY_STRING_LEN    3
1736
1737 /*
1738  * For regulatory extension stuff see IEEE 802.11-2007
1739  * Annex I (page 1141) and Annex J (page 1147). Also
1740  * review 7.3.2.9.
1741  *
1742  * When dot11RegulatoryClassesRequired is true and the
1743  * first_channel/reg_extension_id is >= 201 then the IE
1744  * compromises of the 'ext' struct represented below:
1745  *
1746  *  - Regulatory extension ID - when generating IE this just needs
1747  *    to be monotonically increasing for each triplet passed in
1748  *    the IE
1749  *  - Regulatory class - index into set of rules
1750  *  - Coverage class - index into air propagation time (Table 7-27),
1751  *    in microseconds, you can compute the air propagation time from
1752  *    the index by multiplying by 3, so index 10 yields a propagation
1753  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1754  *    yet. A value of 0 inicates air propagation of <= 1 us.
1755  *
1756  *  See also Table I.2 for Emission limit sets and table
1757  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1758  *  a reg_class to an emission limit set and behavior limit set.
1759  */
1760 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1761
1762 /*
1763  *  Channels numbers in the IE must be monotonically increasing
1764  *  if dot11RegulatoryClassesRequired is not true.
1765  *
1766  *  If dot11RegulatoryClassesRequired is true consecutive
1767  *  subband triplets following a regulatory triplet shall
1768  *  have monotonically increasing first_channel number fields.
1769  *
1770  *  Channel numbers shall not overlap.
1771  *
1772  *  Note that max_power is signed.
1773  */
1774 struct ieee80211_country_ie_triplet {
1775         union {
1776                 struct {
1777                         u8 first_channel;
1778                         u8 num_channels;
1779                         s8 max_power;
1780                 } __attribute__ ((packed)) chans;
1781                 struct {
1782                         u8 reg_extension_id;
1783                         u8 reg_class;
1784                         u8 coverage_class;
1785                 } __attribute__ ((packed)) ext;
1786         };
1787 } __attribute__ ((packed));
1788
1789 enum ieee80211_timeout_interval_type {
1790         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1791         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1792         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1793 };
1794
1795 /* BACK action code */
1796 enum ieee80211_back_actioncode {
1797         WLAN_ACTION_ADDBA_REQ = 0,
1798         WLAN_ACTION_ADDBA_RESP = 1,
1799         WLAN_ACTION_DELBA = 2,
1800 };
1801
1802 /* BACK (block-ack) parties */
1803 enum ieee80211_back_parties {
1804         WLAN_BACK_RECIPIENT = 0,
1805         WLAN_BACK_INITIATOR = 1,
1806 };
1807
1808 /* SA Query action */
1809 enum ieee80211_sa_query_action {
1810         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1811         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1812 };
1813
1814
1815 /* cipher suite selectors */
1816 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1817 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1818 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1819 /* reserved:                            0x000FAC03 */
1820 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1821 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1822 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1823 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
1824
1825 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1826
1827 /* AKM suite selectors */
1828 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1829 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1830 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1831 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1832
1833 #define WLAN_MAX_KEY_LEN                32
1834
1835 #define WLAN_PMKID_LEN                  16
1836
1837 #define WLAN_OUI_WFA                    0x506f9a
1838 #define WLAN_OUI_TYPE_WFA_P2P           9
1839 #define WLAN_OUI_MICROSOFT              0x0050f2
1840 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1841 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1842 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1843
1844 /*
1845  * WMM/802.11e Tspec Element
1846  */
1847 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1848 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1849
1850 enum ieee80211_tspec_status_code {
1851         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1852         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1853 };
1854
1855 struct ieee80211_tspec_ie {
1856         u8 element_id;
1857         u8 len;
1858         u8 oui[3];
1859         u8 oui_type;
1860         u8 oui_subtype;
1861         u8 version;
1862         __le16 tsinfo;
1863         u8 tsinfo_resvd;
1864         __le16 nominal_msdu;
1865         __le16 max_msdu;
1866         __le32 min_service_int;
1867         __le32 max_service_int;
1868         __le32 inactivity_int;
1869         __le32 suspension_int;
1870         __le32 service_start_time;
1871         __le32 min_data_rate;
1872         __le32 mean_data_rate;
1873         __le32 peak_data_rate;
1874         __le32 max_burst_size;
1875         __le32 delay_bound;
1876         __le32 min_phy_rate;
1877         __le16 sba;
1878         __le16 medium_time;
1879 } __packed;
1880
1881 /**
1882  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1883  * @hdr: the frame
1884  *
1885  * The qos ctrl bytes come after the frame_control, duration, seq_num
1886  * and 3 or 4 addresses of length ETH_ALEN.
1887  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1888  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1889  */
1890 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1891 {
1892         if (ieee80211_has_a4(hdr->frame_control))
1893                 return (u8 *)hdr + 30;
1894         else
1895                 return (u8 *)hdr + 24;
1896 }
1897
1898 /**
1899  * ieee80211_get_SA - get pointer to SA
1900  * @hdr: the frame
1901  *
1902  * Given an 802.11 frame, this function returns the offset
1903  * to the source address (SA). It does not verify that the
1904  * header is long enough to contain the address, and the
1905  * header must be long enough to contain the frame control
1906  * field.
1907  */
1908 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1909 {
1910         if (ieee80211_has_a4(hdr->frame_control))
1911                 return hdr->addr4;
1912         if (ieee80211_has_fromds(hdr->frame_control))
1913                 return hdr->addr3;
1914         return hdr->addr2;
1915 }
1916
1917 /**
1918  * ieee80211_get_DA - get pointer to DA
1919  * @hdr: the frame
1920  *
1921  * Given an 802.11 frame, this function returns the offset
1922  * to the destination address (DA). It does not verify that
1923  * the header is long enough to contain the address, and the
1924  * header must be long enough to contain the frame control
1925  * field.
1926  */
1927 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1928 {
1929         if (ieee80211_has_tods(hdr->frame_control))
1930                 return hdr->addr3;
1931         else
1932                 return hdr->addr1;
1933 }
1934
1935 /**
1936  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1937  * @hdr: the frame (buffer must include at least the first octet of payload)
1938  */
1939 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1940 {
1941         if (ieee80211_is_disassoc(hdr->frame_control) ||
1942             ieee80211_is_deauth(hdr->frame_control))
1943                 return true;
1944
1945         if (ieee80211_is_action(hdr->frame_control)) {
1946                 u8 *category;
1947
1948                 /*
1949                  * Action frames, excluding Public Action frames, are Robust
1950                  * Management Frames. However, if we are looking at a Protected
1951                  * frame, skip the check since the data may be encrypted and
1952                  * the frame has already been found to be a Robust Management
1953                  * Frame (by the other end).
1954                  */
1955                 if (ieee80211_has_protected(hdr->frame_control))
1956                         return true;
1957                 category = ((u8 *) hdr) + 24;
1958                 return *category != WLAN_CATEGORY_PUBLIC &&
1959                         *category != WLAN_CATEGORY_HT &&
1960                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1961                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1962         }
1963
1964         return false;
1965 }
1966
1967 /**
1968  * ieee80211_is_public_action - check if frame is a public action frame
1969  * @hdr: the frame
1970  * @len: length of the frame
1971  */
1972 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
1973                                               size_t len)
1974 {
1975         struct ieee80211_mgmt *mgmt = (void *)hdr;
1976
1977         if (len < IEEE80211_MIN_ACTION_SIZE)
1978                 return false;
1979         if (!ieee80211_is_action(hdr->frame_control))
1980                 return false;
1981         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
1982 }
1983
1984 /**
1985  * ieee80211_dsss_chan_to_freq - get channel center frequency
1986  * @channel: the DSSS channel
1987  *
1988  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1989  * Ref IEEE 802.11-2007 section 15.6
1990  */
1991 static inline int ieee80211_dsss_chan_to_freq(int channel)
1992 {
1993         if ((channel > 0) && (channel < 14))
1994                 return 2407 + (channel * 5);
1995         else if (channel == 14)
1996                 return 2484;
1997         else
1998                 return -1;
1999 }
2000
2001 /**
2002  * ieee80211_freq_to_dsss_chan - get channel
2003  * @freq: the frequency
2004  *
2005  * Convert frequency (MHz) to IEEE802.11 DSSS channel
2006  * Ref IEEE 802.11-2007 section 15.6
2007  *
2008  * This routine selects the channel with the closest center frequency.
2009  */
2010 static inline int ieee80211_freq_to_dsss_chan(int freq)
2011 {
2012         if ((freq >= 2410) && (freq < 2475))
2013                 return (freq - 2405) / 5;
2014         else if ((freq >= 2482) && (freq < 2487))
2015                 return 14;
2016         else
2017                 return -1;
2018 }
2019
2020 /**
2021  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2022  * @tu: the TUs
2023  */
2024 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2025 {
2026         return 1024 * tu;
2027 }
2028
2029 /**
2030  * ieee80211_check_tim - check if AID bit is set in TIM
2031  * @tim: the TIM IE
2032  * @tim_len: length of the TIM IE
2033  * @aid: the AID to look for
2034  */
2035 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2036                                        u8 tim_len, u16 aid)
2037 {
2038         u8 mask;
2039         u8 index, indexn1, indexn2;
2040
2041         if (unlikely(!tim || tim_len < sizeof(*tim)))
2042                 return false;
2043
2044         aid &= 0x3fff;
2045         index = aid / 8;
2046         mask  = 1 << (aid & 7);
2047
2048         indexn1 = tim->bitmap_ctrl & 0xfe;
2049         indexn2 = tim_len + indexn1 - 4;
2050
2051         if (index < indexn1 || index > indexn2)
2052                 return false;
2053
2054         index -= indexn1;
2055
2056         return !!(tim->virtual_map[index] & mask);
2057 }
2058
2059 #endif /* LINUX_IEEE80211_H */