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  * Copyright (c) 2013 - 2014 Intel Mobile Communications GmbH
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #ifndef LINUX_IEEE80211_H
  17 #define LINUX_IEEE80211_H
  18
  19 #include <linux/types.h>
  20 #include <linux/if_ether.h>
  21 #include <asm/byteorder.h>
  22 #include <asm/unaligned.h>
  23
  24 /*
  25  * DS bit usage
  26  *
  27  * TA = transmitter address
  28  * RA = receiver address
  29  * DA = destination address
  30  * SA = source address
  31  *
  32  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  33  * -----------------------------------------------------------------
  34  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  35  *  0       1       DA      BSSID   SA      -       AP -> STA
  36  *  1       0       BSSID   SA      DA      -       AP <- STA
  37  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  38  */
  39
  40 #define FCS_LEN 4
  41
  42 #define IEEE80211_FCTL_VERS             0x0003
  43 #define IEEE80211_FCTL_FTYPE            0x000c
  44 #define IEEE80211_FCTL_STYPE            0x00f0
  45 #define IEEE80211_FCTL_TODS             0x0100
  46 #define IEEE80211_FCTL_FROMDS           0x0200
  47 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  48 #define IEEE80211_FCTL_RETRY            0x0800
  49 #define IEEE80211_FCTL_PM               0x1000
  50 #define IEEE80211_FCTL_MOREDATA         0x2000
  51 #define IEEE80211_FCTL_PROTECTED        0x4000
  52 #define IEEE80211_FCTL_ORDER            0x8000
  53 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  54
  55 #define IEEE80211_SCTL_FRAG             0x000F
  56 #define IEEE80211_SCTL_SEQ              0xFFF0
  57
  58 #define IEEE80211_FTYPE_MGMT            0x0000
  59 #define IEEE80211_FTYPE_CTL             0x0004
  60 #define IEEE80211_FTYPE_DATA            0x0008
  61 #define IEEE80211_FTYPE_EXT             0x000c
  62
  63 /* management */
  64 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  65 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  66 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  67 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  68 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  69 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  70 #define IEEE80211_STYPE_BEACON          0x0080
  71 #define IEEE80211_STYPE_ATIM            0x0090
  72 #define IEEE80211_STYPE_DISASSOC        0x00A0
  73 #define IEEE80211_STYPE_AUTH            0x00B0
  74 #define IEEE80211_STYPE_DEAUTH          0x00C0
  75 #define IEEE80211_STYPE_ACTION          0x00D0
  76
  77 /* control */
  78 #define IEEE80211_STYPE_CTL_EXT         0x0060
  79 #define IEEE80211_STYPE_BACK_REQ        0x0080
  80 #define IEEE80211_STYPE_BACK            0x0090
  81 #define IEEE80211_STYPE_PSPOLL          0x00A0
  82 #define IEEE80211_STYPE_RTS             0x00B0
  83 #define IEEE80211_STYPE_CTS             0x00C0
  84 #define IEEE80211_STYPE_ACK             0x00D0
  85 #define IEEE80211_STYPE_CFEND           0x00E0
  86 #define IEEE80211_STYPE_CFENDACK        0x00F0
  87
  88 /* data */
  89 #define IEEE80211_STYPE_DATA                    0x0000
  90 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  91 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  92 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  93 #define IEEE80211_STYPE_NULLFUNC                0x0040
  94 #define IEEE80211_STYPE_CFACK                   0x0050
  95 #define IEEE80211_STYPE_CFPOLL                  0x0060
  96 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  97 #define IEEE80211_STYPE_QOS_DATA                0x0080
  98 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  99 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
 100 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
 101 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
 102 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
 103 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
 104 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
 105
 106 /* extension, added by 802.11ad */
 107 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 108
 109 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 110 #define IEEE80211_CTL_EXT_POLL          0x2000
 111 #define IEEE80211_CTL_EXT_SPR           0x3000
 112 #define IEEE80211_CTL_EXT_GRANT 0x4000
 113 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 114 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 115 #define IEEE80211_CTL_EXT_SSW           0x8000
 116 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 117 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 118
 119
 120 #define IEEE80211_SN_MASK               ((IEEE80211_SCTL_SEQ) >> 4)
 121 #define IEEE80211_MAX_SN                IEEE80211_SN_MASK
 122 #define IEEE80211_SN_MODULO             (IEEE80211_MAX_SN + 1)
 123
 124 static inline bool ieee80211_sn_less(u16 sn1, u16 sn2)
 125 {
 126         return ((sn1 - sn2) & IEEE80211_SN_MASK) > (IEEE80211_SN_MODULO >> 1);
 127 }
 128
 129 static inline u16 ieee80211_sn_add(u16 sn1, u16 sn2)
 130 {
 131         return (sn1 + sn2) & IEEE80211_SN_MASK;
 132 }
 133
 134 static inline u16 ieee80211_sn_inc(u16 sn)
 135 {
 136         return ieee80211_sn_add(sn, 1);
 137 }
 138
 139 static inline u16 ieee80211_sn_sub(u16 sn1, u16 sn2)
 140 {
 141         return (sn1 - sn2) & IEEE80211_SN_MASK;
 142 }
 143
 144 #define IEEE80211_SEQ_TO_SN(seq)        (((seq) & IEEE80211_SCTL_SEQ) >> 4)
 145 #define IEEE80211_SN_TO_SEQ(ssn)        (((ssn) << 4) & IEEE80211_SCTL_SEQ)
 146
 147 /* miscellaneous IEEE 802.11 constants */
 148 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 149 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 150 #define IEEE80211_MAX_AID               2007
 151 #define IEEE80211_MAX_TIM_LEN           251
 152 #define IEEE80211_MAX_MESH_PEERINGS     63
 153 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 154    6.2.1.1.2.
 155
 156    802.11e clarifies the figure in section 7.1.2. The frame body is
 157    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 158 #define IEEE80211_MAX_DATA_LEN          2304
 159 /* 802.11ad extends maximum MSDU size for DMG (freq > 40Ghz) networks
 160  * to 7920 bytes, see 8.2.3 General frame format
 161  */
 162 #define IEEE80211_MAX_DATA_LEN_DMG      7920
 163 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 164 #define IEEE80211_MAX_FRAME_LEN         2352
 165
 166 #define IEEE80211_MAX_SSID_LEN          32
 167
 168 #define IEEE80211_MAX_MESH_ID_LEN       32
 169
 170 #define IEEE80211_FIRST_TSPEC_TSID      8
 171 #define IEEE80211_NUM_TIDS              16
 172
 173 /* number of user priorities 802.11 uses */
 174 #define IEEE80211_NUM_UPS               8
 175
 176 #define IEEE80211_QOS_CTL_LEN           2
 177 /* 1d tag mask */
 178 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 179 /* TID mask */
 180 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 181 /* EOSP */
 182 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 183 /* ACK policy */
 184 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 185 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 186 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 187 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 188 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 189 /* A-MSDU 802.11n */
 190 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 191 /* Mesh Control 802.11s */
 192 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 193
 194 /* Mesh Power Save Level */
 195 #define IEEE80211_QOS_CTL_MESH_PS_LEVEL         0x0200
 196 /* Mesh Receiver Service Period Initiated */
 197 #define IEEE80211_QOS_CTL_RSPI                  0x0400
 198
 199 /* U-APSD queue for WMM IEs sent by AP */
 200 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 201 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 202
 203 /* U-APSD queues for WMM IEs sent by STA */
 204 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 205 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 206 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 207 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 208 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 209
 210 /* U-APSD max SP length for WMM IEs sent by STA */
 211 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 212 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 213 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 214 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 215 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 216 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 217
 218 #define IEEE80211_HT_CTL_LEN            4
 219
 220 struct ieee80211_hdr {
 221         __le16 frame_control;
 222         __le16 duration_id;
 223         u8 addr1[ETH_ALEN];
 224         u8 addr2[ETH_ALEN];
 225         u8 addr3[ETH_ALEN];
 226         __le16 seq_ctrl;
 227         u8 addr4[ETH_ALEN];
 228 } __packed __aligned(2);
 229
 230 struct ieee80211_hdr_3addr {
 231         __le16 frame_control;
 232         __le16 duration_id;
 233         u8 addr1[ETH_ALEN];
 234         u8 addr2[ETH_ALEN];
 235         u8 addr3[ETH_ALEN];
 236         __le16 seq_ctrl;
 237 } __packed __aligned(2);
 238
 239 struct ieee80211_qos_hdr {
 240         __le16 frame_control;
 241         __le16 duration_id;
 242         u8 addr1[ETH_ALEN];
 243         u8 addr2[ETH_ALEN];
 244         u8 addr3[ETH_ALEN];
 245         __le16 seq_ctrl;
 246         __le16 qos_ctrl;
 247 } __packed __aligned(2);
 248
 249 /**
 250  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 251  * @fc: frame control bytes in little-endian byteorder
 252  */
 253 static inline bool ieee80211_has_tods(__le16 fc)
 254 {
 255         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 256 }
 257
 258 /**
 259  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 260  * @fc: frame control bytes in little-endian byteorder
 261  */
 262 static inline bool ieee80211_has_fromds(__le16 fc)
 263 {
 264         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 265 }
 266
 267 /**
 268  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 269  * @fc: frame control bytes in little-endian byteorder
 270  */
 271 static inline bool ieee80211_has_a4(__le16 fc)
 272 {
 273         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 274         return (fc & tmp) == tmp;
 275 }
 276
 277 /**
 278  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 279  * @fc: frame control bytes in little-endian byteorder
 280  */
 281 static inline bool ieee80211_has_morefrags(__le16 fc)
 282 {
 283         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 284 }
 285
 286 /**
 287  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 288  * @fc: frame control bytes in little-endian byteorder
 289  */
 290 static inline bool ieee80211_has_retry(__le16 fc)
 291 {
 292         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 293 }
 294
 295 /**
 296  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 297  * @fc: frame control bytes in little-endian byteorder
 298  */
 299 static inline bool ieee80211_has_pm(__le16 fc)
 300 {
 301         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 302 }
 303
 304 /**
 305  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 306  * @fc: frame control bytes in little-endian byteorder
 307  */
 308 static inline bool ieee80211_has_moredata(__le16 fc)
 309 {
 310         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 311 }
 312
 313 /**
 314  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 315  * @fc: frame control bytes in little-endian byteorder
 316  */
 317 static inline bool ieee80211_has_protected(__le16 fc)
 318 {
 319         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 320 }
 321
 322 /**
 323  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 324  * @fc: frame control bytes in little-endian byteorder
 325  */
 326 static inline bool ieee80211_has_order(__le16 fc)
 327 {
 328         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 329 }
 330
 331 /**
 332  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 333  * @fc: frame control bytes in little-endian byteorder
 334  */
 335 static inline bool ieee80211_is_mgmt(__le16 fc)
 336 {
 337         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 338                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 339 }
 340
 341 /**
 342  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 343  * @fc: frame control bytes in little-endian byteorder
 344  */
 345 static inline bool ieee80211_is_ctl(__le16 fc)
 346 {
 347         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 348                cpu_to_le16(IEEE80211_FTYPE_CTL);
 349 }
 350
 351 /**
 352  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 353  * @fc: frame control bytes in little-endian byteorder
 354  */
 355 static inline bool ieee80211_is_data(__le16 fc)
 356 {
 357         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 358                cpu_to_le16(IEEE80211_FTYPE_DATA);
 359 }
 360
 361 /**
 362  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 363  * @fc: frame control bytes in little-endian byteorder
 364  */
 365 static inline bool ieee80211_is_data_qos(__le16 fc)
 366 {
 367         /*
 368          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 369          * to check the one bit
 370          */
 371         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 372                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 373 }
 374
 375 /**
 376  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 377  * @fc: frame control bytes in little-endian byteorder
 378  */
 379 static inline bool ieee80211_is_data_present(__le16 fc)
 380 {
 381         /*
 382          * mask with 0x40 and test that that bit is clear to only return true
 383          * for the data-containing substypes.
 384          */
 385         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 386                cpu_to_le16(IEEE80211_FTYPE_DATA);
 387 }
 388
 389 /**
 390  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 391  * @fc: frame control bytes in little-endian byteorder
 392  */
 393 static inline bool ieee80211_is_assoc_req(__le16 fc)
 394 {
 395         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 396                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 397 }
 398
 399 /**
 400  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 401  * @fc: frame control bytes in little-endian byteorder
 402  */
 403 static inline bool ieee80211_is_assoc_resp(__le16 fc)
 404 {
 405         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 406                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 407 }
 408
 409 /**
 410  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 411  * @fc: frame control bytes in little-endian byteorder
 412  */
 413 static inline bool ieee80211_is_reassoc_req(__le16 fc)
 414 {
 415         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 416                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 417 }
 418
 419 /**
 420  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 421  * @fc: frame control bytes in little-endian byteorder
 422  */
 423 static inline bool ieee80211_is_reassoc_resp(__le16 fc)
 424 {
 425         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 426                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 427 }
 428
 429 /**
 430  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 431  * @fc: frame control bytes in little-endian byteorder
 432  */
 433 static inline bool ieee80211_is_probe_req(__le16 fc)
 434 {
 435         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 436                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 437 }
 438
 439 /**
 440  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 441  * @fc: frame control bytes in little-endian byteorder
 442  */
 443 static inline bool ieee80211_is_probe_resp(__le16 fc)
 444 {
 445         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 446                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 447 }
 448
 449 /**
 450  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 451  * @fc: frame control bytes in little-endian byteorder
 452  */
 453 static inline bool ieee80211_is_beacon(__le16 fc)
 454 {
 455         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 456                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 457 }
 458
 459 /**
 460  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 461  * @fc: frame control bytes in little-endian byteorder
 462  */
 463 static inline bool ieee80211_is_atim(__le16 fc)
 464 {
 465         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 466                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 467 }
 468
 469 /**
 470  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 471  * @fc: frame control bytes in little-endian byteorder
 472  */
 473 static inline bool ieee80211_is_disassoc(__le16 fc)
 474 {
 475         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 476                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 477 }
 478
 479 /**
 480  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 481  * @fc: frame control bytes in little-endian byteorder
 482  */
 483 static inline bool ieee80211_is_auth(__le16 fc)
 484 {
 485         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 486                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 487 }
 488
 489 /**
 490  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 491  * @fc: frame control bytes in little-endian byteorder
 492  */
 493 static inline bool ieee80211_is_deauth(__le16 fc)
 494 {
 495         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 496                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 497 }
 498
 499 /**
 500  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 501  * @fc: frame control bytes in little-endian byteorder
 502  */
 503 static inline bool ieee80211_is_action(__le16 fc)
 504 {
 505         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 506                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 507 }
 508
 509 /**
 510  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 511  * @fc: frame control bytes in little-endian byteorder
 512  */
 513 static inline bool ieee80211_is_back_req(__le16 fc)
 514 {
 515         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 516                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 517 }
 518
 519 /**
 520  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 521  * @fc: frame control bytes in little-endian byteorder
 522  */
 523 static inline bool ieee80211_is_back(__le16 fc)
 524 {
 525         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 526                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 527 }
 528
 529 /**
 530  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 531  * @fc: frame control bytes in little-endian byteorder
 532  */
 533 static inline bool ieee80211_is_pspoll(__le16 fc)
 534 {
 535         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 536                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 537 }
 538
 539 /**
 540  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 541  * @fc: frame control bytes in little-endian byteorder
 542  */
 543 static inline bool ieee80211_is_rts(__le16 fc)
 544 {
 545         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 546                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 547 }
 548
 549 /**
 550  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 551  * @fc: frame control bytes in little-endian byteorder
 552  */
 553 static inline bool ieee80211_is_cts(__le16 fc)
 554 {
 555         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 556                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 557 }
 558
 559 /**
 560  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 561  * @fc: frame control bytes in little-endian byteorder
 562  */
 563 static inline bool ieee80211_is_ack(__le16 fc)
 564 {
 565         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 566                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 567 }
 568
 569 /**
 570  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 571  * @fc: frame control bytes in little-endian byteorder
 572  */
 573 static inline bool ieee80211_is_cfend(__le16 fc)
 574 {
 575         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 576                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 577 }
 578
 579 /**
 580  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 581  * @fc: frame control bytes in little-endian byteorder
 582  */
 583 static inline bool ieee80211_is_cfendack(__le16 fc)
 584 {
 585         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 586                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 587 }
 588
 589 /**
 590  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 591  * @fc: frame control bytes in little-endian byteorder
 592  */
 593 static inline bool ieee80211_is_nullfunc(__le16 fc)
 594 {
 595         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 596                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 597 }
 598
 599 /**
 600  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 601  * @fc: frame control bytes in little-endian byteorder
 602  */
 603 static inline bool ieee80211_is_qos_nullfunc(__le16 fc)
 604 {
 605         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 606                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 607 }
 608
 609 /**
 610  * ieee80211_is_any_nullfunc - check if frame is regular or QoS nullfunc frame
 611  * @fc: frame control bytes in little-endian byteorder
 612  */
 613 static inline bool ieee80211_is_any_nullfunc(__le16 fc)
 614 {
 615         return (ieee80211_is_nullfunc(fc) || ieee80211_is_qos_nullfunc(fc));
 616 }
 617
 618 /**
 619  * ieee80211_is_bufferable_mmpdu - check if frame is bufferable MMPDU
 620  * @fc: frame control field in little-endian byteorder
 621  */
 622 static inline bool ieee80211_is_bufferable_mmpdu(__le16 fc)
 623 {
 624         /* IEEE 802.11-2012, definition of "bufferable management frame";
 625          * note that this ignores the IBSS special case. */
 626         return ieee80211_is_mgmt(fc) &&
 627                (ieee80211_is_action(fc) ||
 628                 ieee80211_is_disassoc(fc) ||
 629                 ieee80211_is_deauth(fc));
 630 }
 631
 632 /**
 633  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 634  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 635  */
 636 static inline bool ieee80211_is_first_frag(__le16 seq_ctrl)
 637 {
 638         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 639 }
 640
 641 /**
 642  * ieee80211_is_frag - check if a frame is a fragment
 643  * @hdr: 802.11 header of the frame
 644  */
 645 static inline bool ieee80211_is_frag(struct ieee80211_hdr *hdr)
 646 {
 647         return ieee80211_has_morefrags(hdr->frame_control) ||
 648                hdr->seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG);
 649 }
 650
 651 struct ieee80211s_hdr {
 652         u8 flags;
 653         u8 ttl;
 654         __le32 seqnum;
 655         u8 eaddr1[ETH_ALEN];
 656         u8 eaddr2[ETH_ALEN];
 657 } __packed __aligned(2);
 658
 659 /* Mesh flags */
 660 #define MESH_FLAGS_AE_A4        0x1
 661 #define MESH_FLAGS_AE_A5_A6     0x2
 662 #define MESH_FLAGS_AE           0x3
 663 #define MESH_FLAGS_PS_DEEP      0x4
 664
 665 /**
 666  * enum ieee80211_preq_flags - mesh PREQ element flags
 667  *
 668  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 669  */
 670 enum ieee80211_preq_flags {
 671         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 672 };
 673
 674 /**
 675  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 676  *
 677  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 678  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 679  */
 680 enum ieee80211_preq_target_flags {
 681         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 682         IEEE80211_PREQ_USN_FLAG = 1<<2,
 683 };
 684
 685 /**
 686  * struct ieee80211_quiet_ie
 687  *
 688  * This structure refers to "Quiet information element"
 689  */
 690 struct ieee80211_quiet_ie {
 691         u8 count;
 692         u8 period;
 693         __le16 duration;
 694         __le16 offset;
 695 } __packed;
 696
 697 /**
 698  * struct ieee80211_msrment_ie
 699  *
 700  * This structure refers to "Measurement Request/Report information element"
 701  */
 702 struct ieee80211_msrment_ie {
 703         u8 token;
 704         u8 mode;
 705         u8 type;
 706         u8 request[0];
 707 } __packed;
 708
 709 /**
 710  * struct ieee80211_channel_sw_ie
 711  *
 712  * This structure refers to "Channel Switch Announcement information element"
 713  */
 714 struct ieee80211_channel_sw_ie {
 715         u8 mode;
 716         u8 new_ch_num;
 717         u8 count;
 718 } __packed;
 719
 720 /**
 721  * struct ieee80211_ext_chansw_ie
 722  *
 723  * This structure represents the "Extended Channel Switch Announcement element"
 724  */
 725 struct ieee80211_ext_chansw_ie {
 726         u8 mode;
 727         u8 new_operating_class;
 728         u8 new_ch_num;
 729         u8 count;
 730 } __packed;
 731
 732 /**
 733  * struct ieee80211_sec_chan_offs_ie - secondary channel offset IE
 734  * @sec_chan_offs: secondary channel offset, uses IEEE80211_HT_PARAM_CHA_SEC_*
 735  *      values here
 736  * This structure represents the "Secondary Channel Offset element"
 737  */
 738 struct ieee80211_sec_chan_offs_ie {
 739         u8 sec_chan_offs;
 740 } __packed;
 741
 742 /**
 743  * struct ieee80211_mesh_chansw_params_ie - mesh channel switch parameters IE
 744  *
 745  * This structure represents the "Mesh Channel Switch Paramters element"
 746  */
 747 struct ieee80211_mesh_chansw_params_ie {
 748         u8 mesh_ttl;
 749         u8 mesh_flags;
 750         __le16 mesh_reason;
 751         __le16 mesh_pre_value;
 752 } __packed;
 753
 754 /**
 755  * struct ieee80211_wide_bw_chansw_ie - wide bandwidth channel switch IE
 756  */
 757 struct ieee80211_wide_bw_chansw_ie {
 758         u8 new_channel_width;
 759         u8 new_center_freq_seg0, new_center_freq_seg1;
 760 } __packed;
 761
 762 /**
 763  * struct ieee80211_tim
 764  *
 765  * This structure refers to "Traffic Indication Map information element"
 766  */
 767 struct ieee80211_tim_ie {
 768         u8 dtim_count;
 769         u8 dtim_period;
 770         u8 bitmap_ctrl;
 771         /* variable size: 1 - 251 bytes */
 772         u8 virtual_map[1];
 773 } __packed;
 774
 775 /**
 776  * struct ieee80211_meshconf_ie
 777  *
 778  * This structure refers to "Mesh Configuration information element"
 779  */
 780 struct ieee80211_meshconf_ie {
 781         u8 meshconf_psel;
 782         u8 meshconf_pmetric;
 783         u8 meshconf_congest;
 784         u8 meshconf_synch;
 785         u8 meshconf_auth;
 786         u8 meshconf_form;
 787         u8 meshconf_cap;
 788 } __packed;
 789
 790 /**
 791  * enum mesh_config_capab_flags - Mesh Configuration IE capability field flags
 792  *
 793  * @IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS: STA is willing to establish
 794  *      additional mesh peerings with other mesh STAs
 795  * @IEEE80211_MESHCONF_CAPAB_FORWARDING: the STA forwards MSDUs
 796  * @IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING: TBTT adjustment procedure
 797  *      is ongoing
 798  * @IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL: STA is in deep sleep mode or has
 799  *      neighbors in deep sleep mode
 800  */
 801 enum mesh_config_capab_flags {
 802         IEEE80211_MESHCONF_CAPAB_ACCEPT_PLINKS          = 0x01,
 803         IEEE80211_MESHCONF_CAPAB_FORWARDING             = 0x08,
 804         IEEE80211_MESHCONF_CAPAB_TBTT_ADJUSTING         = 0x20,
 805         IEEE80211_MESHCONF_CAPAB_POWER_SAVE_LEVEL       = 0x40,
 806 };
 807
 808 /**
 809  * mesh channel switch parameters element's flag indicator
 810  *
 811  */
 812 #define WLAN_EID_CHAN_SWITCH_PARAM_TX_RESTRICT BIT(0)
 813 #define WLAN_EID_CHAN_SWITCH_PARAM_INITIATOR BIT(1)
 814 #define WLAN_EID_CHAN_SWITCH_PARAM_REASON BIT(2)
 815
 816 /**
 817  * struct ieee80211_rann_ie
 818  *
 819  * This structure refers to "Root Announcement information element"
 820  */
 821 struct ieee80211_rann_ie {
 822         u8 rann_flags;
 823         u8 rann_hopcount;
 824         u8 rann_ttl;
 825         u8 rann_addr[ETH_ALEN];
 826         __le32 rann_seq;
 827         __le32 rann_interval;
 828         __le32 rann_metric;
 829 } __packed;
 830
 831 enum ieee80211_rann_flags {
 832         RANN_FLAG_IS_GATE = 1 << 0,
 833 };
 834
 835 enum ieee80211_ht_chanwidth_values {
 836         IEEE80211_HT_CHANWIDTH_20MHZ = 0,
 837         IEEE80211_HT_CHANWIDTH_ANY = 1,
 838 };
 839
 840 /**
 841  * enum ieee80211_opmode_bits - VHT operating mode field bits
 842  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK: channel width mask
 843  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ: 20 MHz channel width
 844  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ: 40 MHz channel width
 845  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ: 80 MHz channel width
 846  * @IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ: 160 MHz or 80+80 MHz channel width
 847  * @IEEE80211_OPMODE_NOTIF_RX_NSS_MASK: number of spatial streams mask
 848  *      (the NSS value is the value of this field + 1)
 849  * @IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT: number of spatial streams shift
 850  * @IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF: indicates streams in SU-MIMO PPDU
 851  *      using a beamforming steering matrix
 852  */
 853 enum ieee80211_vht_opmode_bits {
 854         IEEE80211_OPMODE_NOTIF_CHANWIDTH_MASK   = 3,
 855         IEEE80211_OPMODE_NOTIF_CHANWIDTH_20MHZ  = 0,
 856         IEEE80211_OPMODE_NOTIF_CHANWIDTH_40MHZ  = 1,
 857         IEEE80211_OPMODE_NOTIF_CHANWIDTH_80MHZ  = 2,
 858         IEEE80211_OPMODE_NOTIF_CHANWIDTH_160MHZ = 3,
 859         IEEE80211_OPMODE_NOTIF_RX_NSS_MASK      = 0x70,
 860         IEEE80211_OPMODE_NOTIF_RX_NSS_SHIFT     = 4,
 861         IEEE80211_OPMODE_NOTIF_RX_NSS_TYPE_BF   = 0x80,
 862 };
 863
 864 #define WLAN_SA_QUERY_TR_ID_LEN 2
 865
 866 /**
 867  * struct ieee80211_tpc_report_ie
 868  *
 869  * This structure refers to "TPC Report element"
 870  */
 871 struct ieee80211_tpc_report_ie {
 872         u8 tx_power;
 873         u8 link_margin;
 874 } __packed;
 875
 876 struct ieee80211_mgmt {
 877         __le16 frame_control;
 878         __le16 duration;
 879         u8 da[ETH_ALEN];
 880         u8 sa[ETH_ALEN];
 881         u8 bssid[ETH_ALEN];
 882         __le16 seq_ctrl;
 883         union {
 884                 struct {
 885                         __le16 auth_alg;
 886                         __le16 auth_transaction;
 887                         __le16 status_code;
 888                         /* possibly followed by Challenge text */
 889                         u8 variable[0];
 890                 } __packed auth;
 891                 struct {
 892                         __le16 reason_code;
 893                 } __packed deauth;
 894                 struct {
 895                         __le16 capab_info;
 896                         __le16 listen_interval;
 897                         /* followed by SSID and Supported rates */
 898                         u8 variable[0];
 899                 } __packed assoc_req;
 900                 struct {
 901                         __le16 capab_info;
 902                         __le16 status_code;
 903                         __le16 aid;
 904                         /* followed by Supported rates */
 905                         u8 variable[0];
 906                 } __packed assoc_resp, reassoc_resp;
 907                 struct {
 908                         __le16 capab_info;
 909                         __le16 listen_interval;
 910                         u8 current_ap[ETH_ALEN];
 911                         /* followed by SSID and Supported rates */
 912                         u8 variable[0];
 913                 } __packed reassoc_req;
 914                 struct {
 915                         __le16 reason_code;
 916                 } __packed disassoc;
 917                 struct {
 918                         __le64 timestamp;
 919                         __le16 beacon_int;
 920                         __le16 capab_info;
 921                         /* followed by some of SSID, Supported rates,
 922                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 923                         u8 variable[0];
 924                 } __packed beacon;
 925                 struct {
 926                         /* only variable items: SSID, Supported rates */
 927                         u8 variable[0];
 928                 } __packed probe_req;
 929                 struct {
 930                         __le64 timestamp;
 931                         __le16 beacon_int;
 932                         __le16 capab_info;
 933                         /* followed by some of SSID, Supported rates,
 934                          * FH Params, DS Params, CF Params, IBSS Params */
 935                         u8 variable[0];
 936                 } __packed probe_resp;
 937                 struct {
 938                         u8 category;
 939                         union {
 940                                 struct {
 941                                         u8 action_code;
 942                                         u8 dialog_token;
 943                                         u8 status_code;
 944                                         u8 variable[0];
 945                                 } __packed wme_action;
 946                                 struct{
 947                                         u8 action_code;
 948                                         u8 variable[0];
 949                                 } __packed chan_switch;
 950                                 struct{
 951                                         u8 action_code;
 952                                         struct ieee80211_ext_chansw_ie data;
 953                                         u8 variable[0];
 954                                 } __packed ext_chan_switch;
 955                                 struct{
 956                                         u8 action_code;
 957                                         u8 dialog_token;
 958                                         u8 element_id;
 959                                         u8 length;
 960                                         struct ieee80211_msrment_ie msr_elem;
 961                                 } __packed measurement;
 962                                 struct{
 963                                         u8 action_code;
 964                                         u8 dialog_token;
 965                                         __le16 capab;
 966                                         __le16 timeout;
 967                                         __le16 start_seq_num;
 968                                 } __packed addba_req;
 969                                 struct{
 970                                         u8 action_code;
 971                                         u8 dialog_token;
 972                                         __le16 status;
 973                                         __le16 capab;
 974                                         __le16 timeout;
 975                                 } __packed addba_resp;
 976                                 struct{
 977                                         u8 action_code;
 978                                         __le16 params;
 979                                         __le16 reason_code;
 980                                 } __packed delba;
 981                                 struct {
 982                                         u8 action_code;
 983                                         u8 variable[0];
 984                                 } __packed self_prot;
 985                                 struct{
 986                                         u8 action_code;
 987                                         u8 variable[0];
 988                                 } __packed mesh_action;
 989                                 struct {
 990                                         u8 action;
 991                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 992                                 } __packed sa_query;
 993                                 struct {
 994                                         u8 action;
 995                                         u8 smps_control;
 996                                 } __packed ht_smps;
 997                                 struct {
 998                                         u8 action_code;
 999                                         u8 chanwidth;
1000                                 } __packed ht_notify_cw;
1001                                 struct {
1002                                         u8 action_code;
1003                                         u8 dialog_token;
1004                                         __le16 capability;
1005                                         u8 variable[0];
1006                                 } __packed tdls_discover_resp;
1007                                 struct {
1008                                         u8 action_code;
1009                                         u8 operating_mode;
1010                                 } __packed vht_opmode_notif;
1011                                 struct {
1012                                         u8 action_code;
1013                                         u8 dialog_token;
1014                                         u8 tpc_elem_id;
1015                                         u8 tpc_elem_length;
1016                                         struct ieee80211_tpc_report_ie tpc;
1017                                 } __packed tpc_report;
1018                         } u;
1019                 } __packed action;
1020         } u;
1021 } __packed __aligned(2);
1022
1023 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
1024 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
1025
1026 /* mgmt header + 1 byte category code */
1027 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
1028
1029
1030 /* Management MIC information element (IEEE 802.11w) */
1031 struct ieee80211_mmie {
1032         u8 element_id;
1033         u8 length;
1034         __le16 key_id;
1035         u8 sequence_number[6];
1036         u8 mic[8];
1037 } __packed;
1038
1039 /* Management MIC information element (IEEE 802.11w) for GMAC and CMAC-256 */
1040 struct ieee80211_mmie_16 {
1041         u8 element_id;
1042         u8 length;
1043         __le16 key_id;
1044         u8 sequence_number[6];
1045         u8 mic[16];
1046 } __packed;
1047
1048 struct ieee80211_vendor_ie {
1049         u8 element_id;
1050         u8 len;
1051         u8 oui[3];
1052         u8 oui_type;
1053 } __packed;
1054
1055 struct ieee80211_wmm_ac_param {
1056         u8 aci_aifsn; /* AIFSN, ACM, ACI */
1057         u8 cw; /* ECWmin, ECWmax (CW = 2^ECW - 1) */
1058         __le16 txop_limit;
1059 } __packed;
1060
1061 struct ieee80211_wmm_param_ie {
1062         u8 element_id; /* Element ID: 221 (0xdd); */
1063         u8 len; /* Length: 24 */
1064         /* required fields for WMM version 1 */
1065         u8 oui[3]; /* 00:50:f2 */
1066         u8 oui_type; /* 2 */
1067         u8 oui_subtype; /* 1 */
1068         u8 version; /* 1 for WMM version 1.0 */
1069         u8 qos_info; /* AP/STA specific QoS info */
1070         u8 reserved; /* 0 */
1071         /* AC_BE, AC_BK, AC_VI, AC_VO */
1072         struct ieee80211_wmm_ac_param ac[4];
1073 } __packed;
1074
1075 /* Control frames */
1076 struct ieee80211_rts {
1077         __le16 frame_control;
1078         __le16 duration;
1079         u8 ra[ETH_ALEN];
1080         u8 ta[ETH_ALEN];
1081 } __packed __aligned(2);
1082
1083 struct ieee80211_cts {
1084         __le16 frame_control;
1085         __le16 duration;
1086         u8 ra[ETH_ALEN];
1087 } __packed __aligned(2);
1088
1089 struct ieee80211_pspoll {
1090         __le16 frame_control;
1091         __le16 aid;
1092         u8 bssid[ETH_ALEN];
1093         u8 ta[ETH_ALEN];
1094 } __packed __aligned(2);
1095
1096 /* TDLS */
1097
1098 /* Channel switch timing */
1099 struct ieee80211_ch_switch_timing {
1100         __le16 switch_time;
1101         __le16 switch_timeout;
1102 } __packed;
1103
1104 /* Link-id information element */
1105 struct ieee80211_tdls_lnkie {
1106         u8 ie_type; /* Link Identifier IE */
1107         u8 ie_len;
1108         u8 bssid[ETH_ALEN];
1109         u8 init_sta[ETH_ALEN];
1110         u8 resp_sta[ETH_ALEN];
1111 } __packed;
1112
1113 struct ieee80211_tdls_data {
1114         u8 da[ETH_ALEN];
1115         u8 sa[ETH_ALEN];
1116         __be16 ether_type;
1117         u8 payload_type;
1118         u8 category;
1119         u8 action_code;
1120         union {
1121                 struct {
1122                         u8 dialog_token;
1123                         __le16 capability;
1124                         u8 variable[0];
1125                 } __packed setup_req;
1126                 struct {
1127                         __le16 status_code;
1128                         u8 dialog_token;
1129                         __le16 capability;
1130                         u8 variable[0];
1131                 } __packed setup_resp;
1132                 struct {
1133                         __le16 status_code;
1134                         u8 dialog_token;
1135                         u8 variable[0];
1136                 } __packed setup_cfm;
1137                 struct {
1138                         __le16 reason_code;
1139                         u8 variable[0];
1140                 } __packed teardown;
1141                 struct {
1142                         u8 dialog_token;
1143                         u8 variable[0];
1144                 } __packed discover_req;
1145                 struct {
1146                         u8 target_channel;
1147                         u8 oper_class;
1148                         u8 variable[0];
1149                 } __packed chan_switch_req;
1150                 struct {
1151                         __le16 status_code;
1152                         u8 variable[0];
1153                 } __packed chan_switch_resp;
1154         } u;
1155 } __packed;
1156
1157 /*
1158  * Peer-to-Peer IE attribute related definitions.
1159  */
1160 /**
1161  * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute.
1162  */
1163 enum ieee80211_p2p_attr_id {
1164         IEEE80211_P2P_ATTR_STATUS = 0,
1165         IEEE80211_P2P_ATTR_MINOR_REASON,
1166         IEEE80211_P2P_ATTR_CAPABILITY,
1167         IEEE80211_P2P_ATTR_DEVICE_ID,
1168         IEEE80211_P2P_ATTR_GO_INTENT,
1169         IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT,
1170         IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
1171         IEEE80211_P2P_ATTR_GROUP_BSSID,
1172         IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING,
1173         IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR,
1174         IEEE80211_P2P_ATTR_MANAGABILITY,
1175         IEEE80211_P2P_ATTR_CHANNEL_LIST,
1176         IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
1177         IEEE80211_P2P_ATTR_DEVICE_INFO,
1178         IEEE80211_P2P_ATTR_GROUP_INFO,
1179         IEEE80211_P2P_ATTR_GROUP_ID,
1180         IEEE80211_P2P_ATTR_INTERFACE,
1181         IEEE80211_P2P_ATTR_OPER_CHANNEL,
1182         IEEE80211_P2P_ATTR_INVITE_FLAGS,
1183         /* 19 - 220: Reserved */
1184         IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221,
1185
1186         IEEE80211_P2P_ATTR_MAX
1187 };
1188
1189 /* Notice of Absence attribute - described in P2P spec 4.1.14 */
1190 /* Typical max value used here */
1191 #define IEEE80211_P2P_NOA_DESC_MAX      4
1192
1193 struct ieee80211_p2p_noa_desc {
1194         u8 count;
1195         __le32 duration;
1196         __le32 interval;
1197         __le32 start_time;
1198 } __packed;
1199
1200 struct ieee80211_p2p_noa_attr {
1201         u8 index;
1202         u8 oppps_ctwindow;
1203         struct ieee80211_p2p_noa_desc desc[IEEE80211_P2P_NOA_DESC_MAX];
1204 } __packed;
1205
1206 #define IEEE80211_P2P_OPPPS_ENABLE_BIT          BIT(7)
1207 #define IEEE80211_P2P_OPPPS_CTWINDOW_MASK       0x7F
1208
1209 /**
1210  * struct ieee80211_bar - HT Block Ack Request
1211  *
1212  * This structure refers to "HT BlockAckReq" as
1213  * described in 802.11n draft section 7.2.1.7.1
1214  */
1215 struct ieee80211_bar {
1216         __le16 frame_control;
1217         __le16 duration;
1218         __u8 ra[ETH_ALEN];
1219         __u8 ta[ETH_ALEN];
1220         __le16 control;
1221         __le16 start_seq_num;
1222 } __packed;
1223
1224 /* 802.11 BAR control masks */
1225 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
1226 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
1227 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
1228 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
1229 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
1230
1231 #define IEEE80211_HT_MCS_MASK_LEN               10
1232
1233 /**
1234  * struct ieee80211_mcs_info - MCS information
1235  * @rx_mask: RX mask
1236  * @rx_highest: highest supported RX rate. If set represents
1237  *      the highest supported RX data rate in units of 1 Mbps.
1238  *      If this field is 0 this value should not be used to
1239  *      consider the highest RX data rate supported.
1240  * @tx_params: TX parameters
1241  */
1242 struct ieee80211_mcs_info {
1243         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
1244         __le16 rx_highest;
1245         u8 tx_params;
1246         u8 reserved[3];
1247 } __packed;
1248
1249 /* 802.11n HT capability MSC set */
1250 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
1251 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
1252 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
1253 /* value 0 == 1 stream etc */
1254 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
1255 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
1256 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
1257 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
1258
1259 /*
1260  * 802.11n D5.0 20.3.5 / 20.6 says:
1261  * - indices 0 to 7 and 32 are single spatial stream
1262  * - 8 to 31 are multiple spatial streams using equal modulation
1263  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
1264  * - remainder are multiple spatial streams using unequal modulation
1265  */
1266 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
1267 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
1268         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
1269
1270 /**
1271  * struct ieee80211_ht_cap - HT capabilities
1272  *
1273  * This structure is the "HT capabilities element" as
1274  * described in 802.11n D5.0 7.3.2.57
1275  */
1276 struct ieee80211_ht_cap {
1277         __le16 cap_info;
1278         u8 ampdu_params_info;
1279
1280         /* 16 bytes MCS information */
1281         struct ieee80211_mcs_info mcs;
1282
1283         __le16 extended_ht_cap_info;
1284         __le32 tx_BF_cap_info;
1285         u8 antenna_selection_info;
1286 } __packed;
1287
1288 /* 802.11n HT capabilities masks (for cap_info) */
1289 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1290 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1291 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1292 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1293 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1294 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1295 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1296 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1297 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1298 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1299 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1300 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1301 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1302 #define IEEE80211_HT_CAP_RESERVED               0x2000
1303 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1304 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1305
1306 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1307 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1308 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1309 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1310 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1311 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1312 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1313 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1314
1315 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1316 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1317 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1318 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1319
1320 /*
1321  * Maximum length of AMPDU that the STA can receive in high-throughput (HT).
1322  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1323  */
1324 enum ieee80211_max_ampdu_length_exp {
1325         IEEE80211_HT_MAX_AMPDU_8K = 0,
1326         IEEE80211_HT_MAX_AMPDU_16K = 1,
1327         IEEE80211_HT_MAX_AMPDU_32K = 2,
1328         IEEE80211_HT_MAX_AMPDU_64K = 3
1329 };
1330
1331 /*
1332  * Maximum length of AMPDU that the STA can receive in VHT.
1333  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1334  */
1335 enum ieee80211_vht_max_ampdu_length_exp {
1336         IEEE80211_VHT_MAX_AMPDU_8K = 0,
1337         IEEE80211_VHT_MAX_AMPDU_16K = 1,
1338         IEEE80211_VHT_MAX_AMPDU_32K = 2,
1339         IEEE80211_VHT_MAX_AMPDU_64K = 3,
1340         IEEE80211_VHT_MAX_AMPDU_128K = 4,
1341         IEEE80211_VHT_MAX_AMPDU_256K = 5,
1342         IEEE80211_VHT_MAX_AMPDU_512K = 6,
1343         IEEE80211_VHT_MAX_AMPDU_1024K = 7
1344 };
1345
1346 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1347
1348 /* Minimum MPDU start spacing */
1349 enum ieee80211_min_mpdu_spacing {
1350         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1351         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1352         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1353         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1354         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1355         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1356         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1357         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1358 };
1359
1360 /**
1361  * struct ieee80211_ht_operation - HT operation IE
1362  *
1363  * This structure is the "HT operation element" as
1364  * described in 802.11n-2009 7.3.2.57
1365  */
1366 struct ieee80211_ht_operation {
1367         u8 primary_chan;
1368         u8 ht_param;
1369         __le16 operation_mode;
1370         __le16 stbc_param;
1371         u8 basic_set[16];
1372 } __packed;
1373
1374 /* for ht_param */
1375 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1376 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1377 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1378 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1379 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1380 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1381
1382 /* for operation_mode */
1383 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1384 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1385 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1386 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1387 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1388 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1389 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1390
1391 /* for stbc_param */
1392 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1393 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1394 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1395 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1396 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1397 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1398
1399
1400 /* block-ack parameters */
1401 #define IEEE80211_ADDBA_PARAM_AMSDU_MASK 0x0001
1402 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1403 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1404 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1405 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1406 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1407
1408 /*
1409  * A-PMDU buffer sizes
1410  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1411  */
1412 #define IEEE80211_MIN_AMPDU_BUF 0x8
1413 #define IEEE80211_MAX_AMPDU_BUF 0x40
1414
1415
1416 /* Spatial Multiplexing Power Save Modes (for capability) */
1417 #define WLAN_HT_CAP_SM_PS_STATIC        0
1418 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1419 #define WLAN_HT_CAP_SM_PS_INVALID       2
1420 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1421
1422 /* for SM power control field lower two bits */
1423 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1424 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1425 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1426
1427 /**
1428  * struct ieee80211_vht_mcs_info - VHT MCS information
1429  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1430  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1431  *      STA can receive. Rate expressed in units of 1 Mbps.
1432  *      If this field is 0 this value should not be used to
1433  *      consider the highest RX data rate supported.
1434  *      The top 3 bits of this field are reserved.
1435  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1436  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1437  *      STA can transmit. Rate expressed in units of 1 Mbps.
1438  *      If this field is 0 this value should not be used to
1439  *      consider the highest TX data rate supported.
1440  *      The top 3 bits of this field are reserved.
1441  */
1442 struct ieee80211_vht_mcs_info {
1443         __le16 rx_mcs_map;
1444         __le16 rx_highest;
1445         __le16 tx_mcs_map;
1446         __le16 tx_highest;
1447 } __packed;
1448
1449 /**
1450  * enum ieee80211_vht_mcs_support - VHT MCS support definitions
1451  * @IEEE80211_VHT_MCS_SUPPORT_0_7: MCSes 0-7 are supported for the
1452  *      number of streams
1453  * @IEEE80211_VHT_MCS_SUPPORT_0_8: MCSes 0-8 are supported
1454  * @IEEE80211_VHT_MCS_SUPPORT_0_9: MCSes 0-9 are supported
1455  * @IEEE80211_VHT_MCS_NOT_SUPPORTED: This number of streams isn't supported
1456  *
1457  * These definitions are used in each 2-bit subfield of the @rx_mcs_map
1458  * and @tx_mcs_map fields of &struct ieee80211_vht_mcs_info, which are
1459  * both split into 8 subfields by number of streams. These values indicate
1460  * which MCSes are supported for the number of streams the value appears
1461  * for.
1462  */
1463 enum ieee80211_vht_mcs_support {
1464         IEEE80211_VHT_MCS_SUPPORT_0_7   = 0,
1465         IEEE80211_VHT_MCS_SUPPORT_0_8   = 1,
1466         IEEE80211_VHT_MCS_SUPPORT_0_9   = 2,
1467         IEEE80211_VHT_MCS_NOT_SUPPORTED = 3,
1468 };
1469
1470 /**
1471  * struct ieee80211_vht_cap - VHT capabilities
1472  *
1473  * This structure is the "VHT capabilities element" as
1474  * described in 802.11ac D3.0 8.4.2.160
1475  * @vht_cap_info: VHT capability info
1476  * @supp_mcs: VHT MCS supported rates
1477  */
1478 struct ieee80211_vht_cap {
1479         __le32 vht_cap_info;
1480         struct ieee80211_vht_mcs_info supp_mcs;
1481 } __packed;
1482
1483 /**
1484  * enum ieee80211_vht_chanwidth - VHT channel width
1485  * @IEEE80211_VHT_CHANWIDTH_USE_HT: use the HT operation IE to
1486  *      determine the channel width (20 or 40 MHz)
1487  * @IEEE80211_VHT_CHANWIDTH_80MHZ: 80 MHz bandwidth
1488  * @IEEE80211_VHT_CHANWIDTH_160MHZ: 160 MHz bandwidth
1489  * @IEEE80211_VHT_CHANWIDTH_80P80MHZ: 80+80 MHz bandwidth
1490  */
1491 enum ieee80211_vht_chanwidth {
1492         IEEE80211_VHT_CHANWIDTH_USE_HT          = 0,
1493         IEEE80211_VHT_CHANWIDTH_80MHZ           = 1,
1494         IEEE80211_VHT_CHANWIDTH_160MHZ          = 2,
1495         IEEE80211_VHT_CHANWIDTH_80P80MHZ        = 3,
1496 };
1497
1498 /**
1499  * struct ieee80211_vht_operation - VHT operation IE
1500  *
1501  * This structure is the "VHT operation element" as
1502  * described in 802.11ac D3.0 8.4.2.161
1503  * @chan_width: Operating channel width
1504  * @center_freq_seg1_idx: center freq segment 1 index
1505  * @center_freq_seg2_idx: center freq segment 2 index
1506  * @basic_mcs_set: VHT Basic MCS rate set
1507  */
1508 struct ieee80211_vht_operation {
1509         u8 chan_width;
1510         u8 center_freq_seg1_idx;
1511         u8 center_freq_seg2_idx;
1512         __le16 basic_mcs_set;
1513 } __packed;
1514
1515
1516 /* 802.11ac VHT Capabilities */
1517 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                  0x00000000
1518 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                  0x00000001
1519 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454                 0x00000002
1520 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ                0x00000004
1521 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ       0x00000008
1522 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_MASK                  0x0000000C
1523 #define IEEE80211_VHT_CAP_RXLDPC                                0x00000010
1524 #define IEEE80211_VHT_CAP_SHORT_GI_80                           0x00000020
1525 #define IEEE80211_VHT_CAP_SHORT_GI_160                          0x00000040
1526 #define IEEE80211_VHT_CAP_TXSTBC                                0x00000080
1527 #define IEEE80211_VHT_CAP_RXSTBC_1                              0x00000100
1528 #define IEEE80211_VHT_CAP_RXSTBC_2                              0x00000200
1529 #define IEEE80211_VHT_CAP_RXSTBC_3                              0x00000300
1530 #define IEEE80211_VHT_CAP_RXSTBC_4                              0x00000400
1531 #define IEEE80211_VHT_CAP_RXSTBC_MASK                           0x00000700
1532 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE                 0x00000800
1533 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE                 0x00001000
1534 #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT                  13
1535 #define IEEE80211_VHT_CAP_BEAMFORMEE_STS_MASK                   \
1536                 (7 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT)
1537 #define IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT             16
1538 #define IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_MASK              \
1539                 (7 << IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT)
1540 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE                 0x00080000
1541 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE                 0x00100000
1542 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                           0x00200000
1543 #define IEEE80211_VHT_CAP_HTC_VHT                               0x00400000
1544 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT      23
1545 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK       \
1546                 (7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT)
1547 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB     0x08000000
1548 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB       0x0c000000
1549 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                    0x10000000
1550 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                    0x20000000
1551
1552 /* Authentication algorithms */
1553 #define WLAN_AUTH_OPEN 0
1554 #define WLAN_AUTH_SHARED_KEY 1
1555 #define WLAN_AUTH_FT 2
1556 #define WLAN_AUTH_SAE 3
1557 #define WLAN_AUTH_LEAP 128
1558
1559 #define WLAN_AUTH_CHALLENGE_LEN 128
1560
1561 #define WLAN_CAPABILITY_ESS             (1<<0)
1562 #define WLAN_CAPABILITY_IBSS            (1<<1)
1563
1564 /*
1565  * A mesh STA sets the ESS and IBSS capability bits to zero.
1566  * however, this holds true for p2p probe responses (in the p2p_find
1567  * phase) as well.
1568  */
1569 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1570         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1571
1572 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1573 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1574 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1575 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1576 #define WLAN_CAPABILITY_PBCC            (1<<6)
1577 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1578
1579 /* 802.11h */
1580 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1581 #define WLAN_CAPABILITY_QOS             (1<<9)
1582 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1583 #define WLAN_CAPABILITY_APSD            (1<<11)
1584 #define WLAN_CAPABILITY_RADIO_MEASURE   (1<<12)
1585 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1586 #define WLAN_CAPABILITY_DEL_BACK        (1<<14)
1587 #define WLAN_CAPABILITY_IMM_BACK        (1<<15)
1588
1589 /* DMG (60gHz) 802.11ad */
1590 /* type - bits 0..1 */
1591 #define WLAN_CAPABILITY_DMG_TYPE_MASK           (3<<0)
1592 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1593 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1594 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1595
1596 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1597 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE         (1<<3)
1598 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1599 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1600
1601 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1602 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1603
1604 /* measurement */
1605 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1606 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1607 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1608
1609 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1610 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1611 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1612
1613 /* 802.11g ERP information element */
1614 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1615 #define WLAN_ERP_USE_PROTECTION (1<<1)
1616 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1617
1618 /* WLAN_ERP_BARKER_PREAMBLE values */
1619 enum {
1620         WLAN_ERP_PREAMBLE_SHORT = 0,
1621         WLAN_ERP_PREAMBLE_LONG = 1,
1622 };
1623
1624 /* Band ID, 802.11ad #8.4.1.45 */
1625 enum {
1626         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1627         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1628         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1629         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1630         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1631         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1632 };
1633
1634 /* Status codes */
1635 enum ieee80211_statuscode {
1636         WLAN_STATUS_SUCCESS = 0,
1637         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1638         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1639         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1640         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1641         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1642         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1643         WLAN_STATUS_CHALLENGE_FAIL = 15,
1644         WLAN_STATUS_AUTH_TIMEOUT = 16,
1645         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1646         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1647         /* 802.11b */
1648         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1649         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1650         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1651         /* 802.11h */
1652         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1653         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1654         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1655         /* 802.11g */
1656         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1657         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1658         /* 802.11w */
1659         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1660         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1661         /* 802.11i */
1662         WLAN_STATUS_INVALID_IE = 40,
1663         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1664         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1665         WLAN_STATUS_INVALID_AKMP = 43,
1666         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1667         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1668         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1669         /* 802.11e */
1670         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1671         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1672         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1673         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1674         WLAN_STATUS_REQUEST_DECLINED = 37,
1675         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1676         WLAN_STATUS_CHANGE_TSPEC = 39,
1677         WLAN_STATUS_WAIT_TS_DELAY = 47,
1678         WLAN_STATUS_NO_DIRECT_LINK = 48,
1679         WLAN_STATUS_STA_NOT_PRESENT = 49,
1680         WLAN_STATUS_STA_NOT_QSTA = 50,
1681         /* 802.11s */
1682         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1683         WLAN_STATUS_FCG_NOT_SUPP = 78,
1684         WLAN_STATUS_STA_NO_TBTT = 78,
1685         /* 802.11ad */
1686         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1687         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1688         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1689         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1690         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1691         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1692         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1693         WLAN_STATUS_REJECT_DSE_BAND = 96,
1694         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1695         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1696 };
1697
1698
1699 /* Reason codes */
1700 enum ieee80211_reasoncode {
1701         WLAN_REASON_UNSPECIFIED = 1,
1702         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1703         WLAN_REASON_DEAUTH_LEAVING = 3,
1704         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1705         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1706         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1707         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1708         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1709         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1710         /* 802.11h */
1711         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1712         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1713         /* 802.11i */
1714         WLAN_REASON_INVALID_IE = 13,
1715         WLAN_REASON_MIC_FAILURE = 14,
1716         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1717         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1718         WLAN_REASON_IE_DIFFERENT = 17,
1719         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1720         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1721         WLAN_REASON_INVALID_AKMP = 20,
1722         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1723         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1724         WLAN_REASON_IEEE8021X_FAILED = 23,
1725         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1726         /* TDLS (802.11z) */
1727         WLAN_REASON_TDLS_TEARDOWN_UNREACHABLE = 25,
1728         WLAN_REASON_TDLS_TEARDOWN_UNSPECIFIED = 26,
1729         /* 802.11e */
1730         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1731         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1732         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1733         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1734         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1735         WLAN_REASON_QSTA_NOT_USE = 37,
1736         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1737         WLAN_REASON_QSTA_TIMEOUT = 39,
1738         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1739         /* 802.11s */
1740         WLAN_REASON_MESH_PEER_CANCELED = 52,
1741         WLAN_REASON_MESH_MAX_PEERS = 53,
1742         WLAN_REASON_MESH_CONFIG = 54,
1743         WLAN_REASON_MESH_CLOSE = 55,
1744         WLAN_REASON_MESH_MAX_RETRIES = 56,
1745         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1746         WLAN_REASON_MESH_INVALID_GTK = 58,
1747         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1748         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1749         WLAN_REASON_MESH_PATH_ERROR = 61,
1750         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1751         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1752         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1753         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1754         WLAN_REASON_MESH_CHAN = 66,
1755 };
1756
1757
1758 /* Information Element IDs */
1759 enum ieee80211_eid {
1760         WLAN_EID_SSID = 0,
1761         WLAN_EID_SUPP_RATES = 1,
1762         WLAN_EID_FH_PARAMS = 2, /* reserved now */
1763         WLAN_EID_DS_PARAMS = 3,
1764         WLAN_EID_CF_PARAMS = 4,
1765         WLAN_EID_TIM = 5,
1766         WLAN_EID_IBSS_PARAMS = 6,
1767         WLAN_EID_COUNTRY = 7,
1768         /* 8, 9 reserved */
1769         WLAN_EID_REQUEST = 10,
1770         WLAN_EID_QBSS_LOAD = 11,
1771         WLAN_EID_EDCA_PARAM_SET = 12,
1772         WLAN_EID_TSPEC = 13,
1773         WLAN_EID_TCLAS = 14,
1774         WLAN_EID_SCHEDULE = 15,
1775         WLAN_EID_CHALLENGE = 16,
1776         /* 17-31 reserved for challenge text extension */
1777         WLAN_EID_PWR_CONSTRAINT = 32,
1778         WLAN_EID_PWR_CAPABILITY = 33,
1779         WLAN_EID_TPC_REQUEST = 34,
1780         WLAN_EID_TPC_REPORT = 35,
1781         WLAN_EID_SUPPORTED_CHANNELS = 36,
1782         WLAN_EID_CHANNEL_SWITCH = 37,
1783         WLAN_EID_MEASURE_REQUEST = 38,
1784         WLAN_EID_MEASURE_REPORT = 39,
1785         WLAN_EID_QUIET = 40,
1786         WLAN_EID_IBSS_DFS = 41,
1787         WLAN_EID_ERP_INFO = 42,
1788         WLAN_EID_TS_DELAY = 43,
1789         WLAN_EID_TCLAS_PROCESSING = 44,
1790         WLAN_EID_HT_CAPABILITY = 45,
1791         WLAN_EID_QOS_CAPA = 46,
1792         /* 47 reserved for Broadcom */
1793         WLAN_EID_RSN = 48,
1794         WLAN_EID_802_15_COEX = 49,
1795         WLAN_EID_EXT_SUPP_RATES = 50,
1796         WLAN_EID_AP_CHAN_REPORT = 51,
1797         WLAN_EID_NEIGHBOR_REPORT = 52,
1798         WLAN_EID_RCPI = 53,
1799         WLAN_EID_MOBILITY_DOMAIN = 54,
1800         WLAN_EID_FAST_BSS_TRANSITION = 55,
1801         WLAN_EID_TIMEOUT_INTERVAL = 56,
1802         WLAN_EID_RIC_DATA = 57,
1803         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1804         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1805         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1806         WLAN_EID_HT_OPERATION = 61,
1807         WLAN_EID_SECONDARY_CHANNEL_OFFSET = 62,
1808         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1809         WLAN_EID_ANTENNA_INFO = 64,
1810         WLAN_EID_RSNI = 65,
1811         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1812         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1813         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1814         WLAN_EID_TIME_ADVERTISEMENT = 69,
1815         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1816         WLAN_EID_MULTIPLE_BSSID = 71,
1817         WLAN_EID_BSS_COEX_2040 = 72,
1818         WLAN_EID_BSS_INTOLERANT_CHL_REPORT = 73,
1819         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1820         WLAN_EID_RIC_DESCRIPTOR = 75,
1821         WLAN_EID_MMIE = 76,
1822         WLAN_EID_ASSOC_COMEBACK_TIME = 77,
1823         WLAN_EID_EVENT_REQUEST = 78,
1824         WLAN_EID_EVENT_REPORT = 79,
1825         WLAN_EID_DIAGNOSTIC_REQUEST = 80,
1826         WLAN_EID_DIAGNOSTIC_REPORT = 81,
1827         WLAN_EID_LOCATION_PARAMS = 82,
1828         WLAN_EID_NON_TX_BSSID_CAP =  83,
1829         WLAN_EID_SSID_LIST = 84,
1830         WLAN_EID_MULTI_BSSID_IDX = 85,
1831         WLAN_EID_FMS_DESCRIPTOR = 86,
1832         WLAN_EID_FMS_REQUEST = 87,
1833         WLAN_EID_FMS_RESPONSE = 88,
1834         WLAN_EID_QOS_TRAFFIC_CAPA = 89,
1835         WLAN_EID_BSS_MAX_IDLE_PERIOD = 90,
1836         WLAN_EID_TSF_REQUEST = 91,
1837         WLAN_EID_TSF_RESPOSNE = 92,
1838         WLAN_EID_WNM_SLEEP_MODE = 93,
1839         WLAN_EID_TIM_BCAST_REQ = 94,
1840         WLAN_EID_TIM_BCAST_RESP = 95,
1841         WLAN_EID_COLL_IF_REPORT = 96,
1842         WLAN_EID_CHANNEL_USAGE = 97,
1843         WLAN_EID_TIME_ZONE = 98,
1844         WLAN_EID_DMS_REQUEST = 99,
1845         WLAN_EID_DMS_RESPONSE = 100,
1846         WLAN_EID_LINK_ID = 101,
1847         WLAN_EID_WAKEUP_SCHEDUL = 102,
1848         /* 103 reserved */
1849         WLAN_EID_CHAN_SWITCH_TIMING = 104,
1850         WLAN_EID_PTI_CONTROL = 105,
1851         WLAN_EID_PU_BUFFER_STATUS = 106,
1852         WLAN_EID_INTERWORKING = 107,
1853         WLAN_EID_ADVERTISEMENT_PROTOCOL = 108,
1854         WLAN_EID_EXPEDITED_BW_REQ = 109,
1855         WLAN_EID_QOS_MAP_SET = 110,
1856         WLAN_EID_ROAMING_CONSORTIUM = 111,
1857         WLAN_EID_EMERGENCY_ALERT = 112,
1858         WLAN_EID_MESH_CONFIG = 113,
1859         WLAN_EID_MESH_ID = 114,
1860         WLAN_EID_LINK_METRIC_REPORT = 115,
1861         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1862         WLAN_EID_PEER_MGMT = 117,
1863         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1864         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1865         WLAN_EID_BEACON_TIMING = 120,
1866         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1867         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1868         WLAN_EID_MCCAOP_ADVERT = 123,
1869         WLAN_EID_MCCAOP_TEARDOWN = 124,
1870         WLAN_EID_GANN = 125,
1871         WLAN_EID_RANN = 126,
1872         WLAN_EID_EXT_CAPABILITY = 127,
1873         /* 128, 129 reserved for Agere */
1874         WLAN_EID_PREQ = 130,
1875         WLAN_EID_PREP = 131,
1876         WLAN_EID_PERR = 132,
1877         /* 133-136 reserved for Cisco */
1878         WLAN_EID_PXU = 137,
1879         WLAN_EID_PXUC = 138,
1880         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1881         WLAN_EID_MIC = 140,
1882         WLAN_EID_DESTINATION_URI = 141,
1883         WLAN_EID_UAPSD_COEX = 142,
1884         WLAN_EID_WAKEUP_SCHEDULE = 143,
1885         WLAN_EID_EXT_SCHEDULE = 144,
1886         WLAN_EID_STA_AVAILABILITY = 145,
1887         WLAN_EID_DMG_TSPEC = 146,
1888         WLAN_EID_DMG_AT = 147,
1889         WLAN_EID_DMG_CAP = 148,
1890         /* 149 reserved for Cisco */
1891         WLAN_EID_CISCO_VENDOR_SPECIFIC = 150,
1892         WLAN_EID_DMG_OPERATION = 151,
1893         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1894         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1895         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1896         /* 155-156 reserved for Cisco */
1897         WLAN_EID_AWAKE_WINDOW = 157,
1898         WLAN_EID_MULTI_BAND = 158,
1899         WLAN_EID_ADDBA_EXT = 159,
1900         WLAN_EID_NEXT_PCP_LIST = 160,
1901         WLAN_EID_PCP_HANDOVER = 161,
1902         WLAN_EID_DMG_LINK_MARGIN = 162,
1903         WLAN_EID_SWITCHING_STREAM = 163,
1904         WLAN_EID_SESSION_TRANSITION = 164,
1905         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1906         WLAN_EID_CLUSTER_REPORT = 166,
1907         WLAN_EID_RELAY_CAP = 167,
1908         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1909         WLAN_EID_BEAM_LINK_MAINT = 169,
1910         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1911         WLAN_EID_U_PID = 171,
1912         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1913         /* 173 reserved for Symbol */
1914         WLAN_EID_MCCAOP_ADV_OVERVIEW = 174,
1915         WLAN_EID_QUIET_PERIOD_REQ = 175,
1916         /* 176 reserved for Symbol */
1917         WLAN_EID_QUIET_PERIOD_RESP = 177,
1918         /* 178-179 reserved for Symbol */
1919         /* 180 reserved for ISO/IEC 20011 */
1920         WLAN_EID_EPAC_POLICY = 182,
1921         WLAN_EID_CLISTER_TIME_OFF = 183,
1922         WLAN_EID_INTER_AC_PRIO = 184,
1923         WLAN_EID_SCS_DESCRIPTOR = 185,
1924         WLAN_EID_QLOAD_REPORT = 186,
1925         WLAN_EID_HCCA_TXOP_UPDATE_COUNT = 187,
1926         WLAN_EID_HL_STREAM_ID = 188,
1927         WLAN_EID_GCR_GROUP_ADDR = 189,
1928         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1929         WLAN_EID_VHT_CAPABILITY = 191,
1930         WLAN_EID_VHT_OPERATION = 192,
1931         WLAN_EID_EXTENDED_BSS_LOAD = 193,
1932         WLAN_EID_WIDE_BW_CHANNEL_SWITCH = 194,
1933         WLAN_EID_VHT_TX_POWER_ENVELOPE = 195,
1934         WLAN_EID_CHANNEL_SWITCH_WRAPPER = 196,
1935         WLAN_EID_AID = 197,
1936         WLAN_EID_QUIET_CHANNEL = 198,
1937         WLAN_EID_OPMODE_NOTIF = 199,
1938
1939         WLAN_EID_VENDOR_SPECIFIC = 221,
1940         WLAN_EID_QOS_PARAMETER = 222,
1941 };
1942
1943 /* Action category code */
1944 enum ieee80211_category {
1945         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1946         WLAN_CATEGORY_QOS = 1,
1947         WLAN_CATEGORY_DLS = 2,
1948         WLAN_CATEGORY_BACK = 3,
1949         WLAN_CATEGORY_PUBLIC = 4,
1950         WLAN_CATEGORY_RADIO_MEASUREMENT = 5,
1951         WLAN_CATEGORY_HT = 7,
1952         WLAN_CATEGORY_SA_QUERY = 8,
1953         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1954         WLAN_CATEGORY_WNM = 10,
1955         WLAN_CATEGORY_WNM_UNPROTECTED = 11,
1956         WLAN_CATEGORY_TDLS = 12,
1957         WLAN_CATEGORY_MESH_ACTION = 13,
1958         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1959         WLAN_CATEGORY_SELF_PROTECTED = 15,
1960         WLAN_CATEGORY_DMG = 16,
1961         WLAN_CATEGORY_WMM = 17,
1962         WLAN_CATEGORY_FST = 18,
1963         WLAN_CATEGORY_UNPROT_DMG = 20,
1964         WLAN_CATEGORY_VHT = 21,
1965         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1966         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1967 };
1968
1969 /* SPECTRUM_MGMT action code */
1970 enum ieee80211_spectrum_mgmt_actioncode {
1971         WLAN_ACTION_SPCT_MSR_REQ = 0,
1972         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1973         WLAN_ACTION_SPCT_TPC_REQ = 2,
1974         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1975         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1976 };
1977
1978 /* HT action codes */
1979 enum ieee80211_ht_actioncode {
1980         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1981         WLAN_HT_ACTION_SMPS = 1,
1982         WLAN_HT_ACTION_PSMP = 2,
1983         WLAN_HT_ACTION_PCO_PHASE = 3,
1984         WLAN_HT_ACTION_CSI = 4,
1985         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1986         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1987         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1988 };
1989
1990 /* VHT action codes */
1991 enum ieee80211_vht_actioncode {
1992         WLAN_VHT_ACTION_COMPRESSED_BF = 0,
1993         WLAN_VHT_ACTION_GROUPID_MGMT = 1,
1994         WLAN_VHT_ACTION_OPMODE_NOTIF = 2,
1995 };
1996
1997 /* Self Protected Action codes */
1998 enum ieee80211_self_protected_actioncode {
1999         WLAN_SP_RESERVED = 0,
2000         WLAN_SP_MESH_PEERING_OPEN = 1,
2001         WLAN_SP_MESH_PEERING_CONFIRM = 2,
2002         WLAN_SP_MESH_PEERING_CLOSE = 3,
2003         WLAN_SP_MGK_INFORM = 4,
2004         WLAN_SP_MGK_ACK = 5,
2005 };
2006
2007 /* Mesh action codes */
2008 enum ieee80211_mesh_actioncode {
2009         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
2010         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
2011         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
2012         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
2013         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
2014         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
2015         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
2016         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
2017         WLAN_MESH_ACTION_MCCA_TEARDOWN,
2018         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
2019         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
2020 };
2021
2022 /* Security key length */
2023 enum ieee80211_key_len {
2024         WLAN_KEY_LEN_WEP40 = 5,
2025         WLAN_KEY_LEN_WEP104 = 13,
2026         WLAN_KEY_LEN_CCMP = 16,
2027         WLAN_KEY_LEN_CCMP_256 = 32,
2028         WLAN_KEY_LEN_TKIP = 32,
2029         WLAN_KEY_LEN_AES_CMAC = 16,
2030         WLAN_KEY_LEN_SMS4 = 32,
2031         WLAN_KEY_LEN_GCMP = 16,
2032         WLAN_KEY_LEN_GCMP_256 = 32,
2033         WLAN_KEY_LEN_BIP_CMAC_256 = 32,
2034         WLAN_KEY_LEN_BIP_GMAC_128 = 16,
2035         WLAN_KEY_LEN_BIP_GMAC_256 = 32,
2036 };
2037
2038 #define IEEE80211_WEP_IV_LEN            4
2039 #define IEEE80211_WEP_ICV_LEN           4
2040 #define IEEE80211_CCMP_HDR_LEN          8
2041 #define IEEE80211_CCMP_MIC_LEN          8
2042 #define IEEE80211_CCMP_PN_LEN           6
2043 #define IEEE80211_CCMP_256_HDR_LEN      8
2044 #define IEEE80211_CCMP_256_MIC_LEN      16
2045 #define IEEE80211_CCMP_256_PN_LEN       6
2046 #define IEEE80211_TKIP_IV_LEN           8
2047 #define IEEE80211_TKIP_ICV_LEN          4
2048 #define IEEE80211_CMAC_PN_LEN           6
2049 #define IEEE80211_GMAC_PN_LEN           6
2050 #define IEEE80211_GCMP_HDR_LEN          8
2051 #define IEEE80211_GCMP_MIC_LEN          16
2052 #define IEEE80211_GCMP_PN_LEN           6
2053
2054 /* Public action codes */
2055 enum ieee80211_pub_actioncode {
2056         WLAN_PUB_ACTION_EXT_CHANSW_ANN = 4,
2057         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
2058 };
2059
2060 /* TDLS action codes */
2061 enum ieee80211_tdls_actioncode {
2062         WLAN_TDLS_SETUP_REQUEST = 0,
2063         WLAN_TDLS_SETUP_RESPONSE = 1,
2064         WLAN_TDLS_SETUP_CONFIRM = 2,
2065         WLAN_TDLS_TEARDOWN = 3,
2066         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
2067         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
2068         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
2069         WLAN_TDLS_PEER_PSM_REQUEST = 7,
2070         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
2071         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
2072         WLAN_TDLS_DISCOVERY_REQUEST = 10,
2073 };
2074
2075 /* Extended Channel Switching capability to be set in the 1st byte of
2076  * the @WLAN_EID_EXT_CAPABILITY information element
2077  */
2078 #define WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING    BIT(2)
2079
2080 /* TDLS capabilities in the the 4th byte of @WLAN_EID_EXT_CAPABILITY */
2081 #define WLAN_EXT_CAPA4_TDLS_BUFFER_STA          BIT(4)
2082 #define WLAN_EXT_CAPA4_TDLS_PEER_PSM            BIT(5)
2083 #define WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH         BIT(6)
2084
2085 /* Interworking capabilities are set in 7th bit of 4th byte of the
2086  * @WLAN_EID_EXT_CAPABILITY information element
2087  */
2088 #define WLAN_EXT_CAPA4_INTERWORKING_ENABLED     BIT(7)
2089
2090 /*
2091  * TDLS capabililites to be enabled in the 5th byte of the
2092  * @WLAN_EID_EXT_CAPABILITY information element
2093  */
2094 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
2095 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
2096 #define WLAN_EXT_CAPA5_TDLS_CH_SW_PROHIBITED    BIT(7)
2097
2098 #define WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED     BIT(5)
2099 #define WLAN_EXT_CAPA8_OPMODE_NOTIF     BIT(6)
2100
2101 /* TDLS specific payload type in the LLC/SNAP header */
2102 #define WLAN_TDLS_SNAP_RFTYPE   0x2
2103
2104 /* BSS Coex IE information field bits */
2105 #define WLAN_BSS_COEX_INFORMATION_REQUEST       BIT(0)
2106
2107 /**
2108  * enum - mesh synchronization method identifier
2109  *
2110  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
2111  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
2112  *      that will be specified in a vendor specific information element
2113  */
2114 enum {
2115         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
2116         IEEE80211_SYNC_METHOD_VENDOR = 255,
2117 };
2118
2119 /**
2120  * enum - mesh path selection protocol identifier
2121  *
2122  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
2123  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
2124  *      be specified in a vendor specific information element
2125  */
2126 enum {
2127         IEEE80211_PATH_PROTOCOL_HWMP = 1,
2128         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
2129 };
2130
2131 /**
2132  * enum - mesh path selection metric identifier
2133  *
2134  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
2135  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
2136  *      specified in a vendor specific information element
2137  */
2138 enum {
2139         IEEE80211_PATH_METRIC_AIRTIME = 1,
2140         IEEE80211_PATH_METRIC_VENDOR = 255,
2141 };
2142
2143 /**
2144  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
2145  *
2146  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
2147  *
2148  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
2149  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
2150  *      this value
2151  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
2152  *      the proactive PREQ with proactive PREP subfield set to 0
2153  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
2154  *      supports the proactive PREQ with proactive PREP subfield set to 1
2155  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
2156  *      the proactive RANN
2157  */
2158 enum ieee80211_root_mode_identifier {
2159         IEEE80211_ROOTMODE_NO_ROOT = 0,
2160         IEEE80211_ROOTMODE_ROOT = 1,
2161         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
2162         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
2163         IEEE80211_PROACTIVE_RANN = 4,
2164 };
2165
2166 /*
2167  * IEEE 802.11-2007 7.3.2.9 Country information element
2168  *
2169  * Minimum length is 8 octets, ie len must be evenly
2170  * divisible by 2
2171  */
2172
2173 /* Although the spec says 8 I'm seeing 6 in practice */
2174 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
2175
2176 /* The Country String field of the element shall be 3 octets in length */
2177 #define IEEE80211_COUNTRY_STRING_LEN    3
2178
2179 /*
2180  * For regulatory extension stuff see IEEE 802.11-2007
2181  * Annex I (page 1141) and Annex J (page 1147). Also
2182  * review 7.3.2.9.
2183  *
2184  * When dot11RegulatoryClassesRequired is true and the
2185  * first_channel/reg_extension_id is >= 201 then the IE
2186  * compromises of the 'ext' struct represented below:
2187  *
2188  *  - Regulatory extension ID - when generating IE this just needs
2189  *    to be monotonically increasing for each triplet passed in
2190  *    the IE
2191  *  - Regulatory class - index into set of rules
2192  *  - Coverage class - index into air propagation time (Table 7-27),
2193  *    in microseconds, you can compute the air propagation time from
2194  *    the index by multiplying by 3, so index 10 yields a propagation
2195  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
2196  *    yet. A value of 0 inicates air propagation of <= 1 us.
2197  *
2198  *  See also Table I.2 for Emission limit sets and table
2199  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
2200  *  a reg_class to an emission limit set and behavior limit set.
2201  */
2202 #define IEEE80211_COUNTRY_EXTENSION_ID 201
2203
2204 /*
2205  *  Channels numbers in the IE must be monotonically increasing
2206  *  if dot11RegulatoryClassesRequired is not true.
2207  *
2208  *  If dot11RegulatoryClassesRequired is true consecutive
2209  *  subband triplets following a regulatory triplet shall
2210  *  have monotonically increasing first_channel number fields.
2211  *
2212  *  Channel numbers shall not overlap.
2213  *
2214  *  Note that max_power is signed.
2215  */
2216 struct ieee80211_country_ie_triplet {
2217         union {
2218                 struct {
2219                         u8 first_channel;
2220                         u8 num_channels;
2221                         s8 max_power;
2222                 } __packed chans;
2223                 struct {
2224                         u8 reg_extension_id;
2225                         u8 reg_class;
2226                         u8 coverage_class;
2227                 } __packed ext;
2228         };
2229 } __packed;
2230
2231 enum ieee80211_timeout_interval_type {
2232         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
2233         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
2234         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
2235 };
2236
2237 /**
2238  * struct ieee80211_timeout_interval_ie - Timeout Interval element
2239  * @type: type, see &enum ieee80211_timeout_interval_type
2240  * @value: timeout interval value
2241  */
2242 struct ieee80211_timeout_interval_ie {
2243         u8 type;
2244         __le32 value;
2245 } __packed;
2246
2247 /* BACK action code */
2248 enum ieee80211_back_actioncode {
2249         WLAN_ACTION_ADDBA_REQ = 0,
2250         WLAN_ACTION_ADDBA_RESP = 1,
2251         WLAN_ACTION_DELBA = 2,
2252 };
2253
2254 /* BACK (block-ack) parties */
2255 enum ieee80211_back_parties {
2256         WLAN_BACK_RECIPIENT = 0,
2257         WLAN_BACK_INITIATOR = 1,
2258 };
2259
2260 /* SA Query action */
2261 enum ieee80211_sa_query_action {
2262         WLAN_ACTION_SA_QUERY_REQUEST = 0,
2263         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
2264 };
2265
2266
2267 /* cipher suite selectors */
2268 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
2269 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
2270 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
2271 /* reserved:                            0x000FAC03 */
2272 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
2273 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
2274 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
2275 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
2276 #define WLAN_CIPHER_SUITE_GCMP_256      0x000FAC09
2277 #define WLAN_CIPHER_SUITE_CCMP_256      0x000FAC0A
2278 #define WLAN_CIPHER_SUITE_BIP_GMAC_128  0x000FAC0B
2279 #define WLAN_CIPHER_SUITE_BIP_GMAC_256  0x000FAC0C
2280 #define WLAN_CIPHER_SUITE_BIP_CMAC_256  0x000FAC0D
2281
2282 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
2283
2284 /* AKM suite selectors */
2285 #define WLAN_AKM_SUITE_8021X            0x000FAC01
2286 #define WLAN_AKM_SUITE_PSK              0x000FAC02
2287 #define WLAN_AKM_SUITE_8021X_SHA256     0x000FAC05
2288 #define WLAN_AKM_SUITE_PSK_SHA256       0x000FAC06
2289 #define WLAN_AKM_SUITE_TDLS             0x000FAC07
2290 #define WLAN_AKM_SUITE_SAE              0x000FAC08
2291 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
2292
2293 #define WLAN_MAX_KEY_LEN                32
2294
2295 #define WLAN_PMKID_LEN                  16
2296
2297 #define WLAN_OUI_WFA                    0x506f9a
2298 #define WLAN_OUI_TYPE_WFA_P2P           9
2299 #define WLAN_OUI_MICROSOFT              0x0050f2
2300 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
2301 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
2302 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
2303
2304 /*
2305  * WMM/802.11e Tspec Element
2306  */
2307 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
2308 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
2309
2310 enum ieee80211_tspec_status_code {
2311         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
2312         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
2313 };
2314
2315 struct ieee80211_tspec_ie {
2316         u8 element_id;
2317         u8 len;
2318         u8 oui[3];
2319         u8 oui_type;
2320         u8 oui_subtype;
2321         u8 version;
2322         __le16 tsinfo;
2323         u8 tsinfo_resvd;
2324         __le16 nominal_msdu;
2325         __le16 max_msdu;
2326         __le32 min_service_int;
2327         __le32 max_service_int;
2328         __le32 inactivity_int;
2329         __le32 suspension_int;
2330         __le32 service_start_time;
2331         __le32 min_data_rate;
2332         __le32 mean_data_rate;
2333         __le32 peak_data_rate;
2334         __le32 max_burst_size;
2335         __le32 delay_bound;
2336         __le32 min_phy_rate;
2337         __le16 sba;
2338         __le16 medium_time;
2339 } __packed;
2340
2341 /**
2342  * ieee80211_get_qos_ctl - get pointer to qos control bytes
2343  * @hdr: the frame
2344  *
2345  * The qos ctrl bytes come after the frame_control, duration, seq_num
2346  * and 3 or 4 addresses of length ETH_ALEN.
2347  * 3 addr: 2 + 2 + 2 + 3*6 = 24
2348  * 4 addr: 2 + 2 + 2 + 4*6 = 30
2349  */
2350 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
2351 {
2352         if (ieee80211_has_a4(hdr->frame_control))
2353                 return (u8 *)hdr + 30;
2354         else
2355                 return (u8 *)hdr + 24;
2356 }
2357
2358 /**
2359  * ieee80211_get_SA - get pointer to SA
2360  * @hdr: the frame
2361  *
2362  * Given an 802.11 frame, this function returns the offset
2363  * to the source address (SA). It does not verify that the
2364  * header is long enough to contain the address, and the
2365  * header must be long enough to contain the frame control
2366  * field.
2367  */
2368 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
2369 {
2370         if (ieee80211_has_a4(hdr->frame_control))
2371                 return hdr->addr4;
2372         if (ieee80211_has_fromds(hdr->frame_control))
2373                 return hdr->addr3;
2374         return hdr->addr2;
2375 }
2376
2377 /**
2378  * ieee80211_get_DA - get pointer to DA
2379  * @hdr: the frame
2380  *
2381  * Given an 802.11 frame, this function returns the offset
2382  * to the destination address (DA). It does not verify that
2383  * the header is long enough to contain the address, and the
2384  * header must be long enough to contain the frame control
2385  * field.
2386  */
2387 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
2388 {
2389         if (ieee80211_has_tods(hdr->frame_control))
2390                 return hdr->addr3;
2391         else
2392                 return hdr->addr1;
2393 }
2394
2395 /**
2396  * _ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
2397  * @hdr: the frame (buffer must include at least the first octet of payload)
2398  */
2399 static inline bool _ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
2400 {
2401         if (ieee80211_is_disassoc(hdr->frame_control) ||
2402             ieee80211_is_deauth(hdr->frame_control))
2403                 return true;
2404
2405         if (ieee80211_is_action(hdr->frame_control)) {
2406                 u8 *category;
2407
2408                 /*
2409                  * Action frames, excluding Public Action frames, are Robust
2410                  * Management Frames. However, if we are looking at a Protected
2411                  * frame, skip the check since the data may be encrypted and
2412                  * the frame has already been found to be a Robust Management
2413                  * Frame (by the other end).
2414                  */
2415                 if (ieee80211_has_protected(hdr->frame_control))
2416                         return true;
2417                 category = ((u8 *) hdr) + 24;
2418                 return *category != WLAN_CATEGORY_PUBLIC &&
2419                         *category != WLAN_CATEGORY_HT &&
2420                         *category != WLAN_CATEGORY_WNM_UNPROTECTED &&
2421                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
2422                         *category != WLAN_CATEGORY_UNPROT_DMG &&
2423                         *category != WLAN_CATEGORY_VHT &&
2424                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
2425         }
2426
2427         return false;
2428 }
2429
2430 /**
2431  * ieee80211_is_robust_mgmt_frame - check if skb contains a robust mgmt frame
2432  * @skb: the skb containing the frame, length will be checked
2433  */
2434 static inline bool ieee80211_is_robust_mgmt_frame(struct sk_buff *skb)
2435 {
2436         if (skb->len < 25)
2437                 return false;
2438         return _ieee80211_is_robust_mgmt_frame((void *)skb->data);
2439 }
2440
2441 /**
2442  * ieee80211_is_public_action - check if frame is a public action frame
2443  * @hdr: the frame
2444  * @len: length of the frame
2445  */
2446 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
2447                                               size_t len)
2448 {
2449         struct ieee80211_mgmt *mgmt = (void *)hdr;
2450
2451         if (len < IEEE80211_MIN_ACTION_SIZE)
2452                 return false;
2453         if (!ieee80211_is_action(hdr->frame_control))
2454                 return false;
2455         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
2456 }
2457
2458 /**
2459  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2460  * @tu: the TUs
2461  */
2462 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2463 {
2464         return 1024 * tu;
2465 }
2466
2467 /**
2468  * ieee80211_check_tim - check if AID bit is set in TIM
2469  * @tim: the TIM IE
2470  * @tim_len: length of the TIM IE
2471  * @aid: the AID to look for
2472  */
2473 static inline bool ieee80211_check_tim(const struct ieee80211_tim_ie *tim,
2474                                        u8 tim_len, u16 aid)
2475 {
2476         u8 mask;
2477         u8 index, indexn1, indexn2;
2478
2479         if (unlikely(!tim || tim_len < sizeof(*tim)))
2480                 return false;
2481
2482         aid &= 0x3fff;
2483         index = aid / 8;
2484         mask  = 1 << (aid & 7);
2485
2486         indexn1 = tim->bitmap_ctrl & 0xfe;
2487         indexn2 = tim_len + indexn1 - 4;
2488
2489         if (index < indexn1 || index > indexn2)
2490                 return false;
2491
2492         index -= indexn1;
2493
2494         return !!(tim->virtual_map[index] & mask);
2495 }
2496
2497 /**
2498  * ieee80211_get_tdls_action - get tdls packet action (or -1, if not tdls packet)
2499  * @skb: the skb containing the frame, length will not be checked
2500  * @hdr_size: the size of the ieee80211_hdr that starts at skb->data
2501  *
2502  * This function assumes the frame is a data frame, and that the network header
2503  * is in the correct place.
2504  */
2505 static inline int ieee80211_get_tdls_action(struct sk_buff *skb, u32 hdr_size)
2506 {
2507         if (!skb_is_nonlinear(skb) &&
2508             skb->len > (skb_network_offset(skb) + 2)) {
2509                 /* Point to where the indication of TDLS should start */
2510                 const u8 *tdls_data = skb_network_header(skb) - 2;
2511
2512                 if (get_unaligned_be16(tdls_data) == ETH_P_TDLS &&
2513                     tdls_data[2] == WLAN_TDLS_SNAP_RFTYPE &&
2514                     tdls_data[3] == WLAN_CATEGORY_TDLS)
2515                         return tdls_data[4];
2516         }
2517
2518         return -1;
2519 }
2520
2521 /* convert time units */
2522 #define TU_TO_JIFFIES(x)        (usecs_to_jiffies((x) * 1024))
2523 #define TU_TO_EXP_TIME(x)       (jiffies + TU_TO_JIFFIES(x))
2524
2525 /**
2526  * ieee80211_action_contains_tpc - checks if the frame contains TPC element
2527  * @skb: the skb containing the frame, length will be checked
2528  *
2529  * This function checks if it's either TPC report action frame or Link
2530  * Measurement report action frame as defined in IEEE Std. 802.11-2012 8.5.2.5
2531  * and 8.5.7.5 accordingly.
2532  */
2533 static inline bool ieee80211_action_contains_tpc(struct sk_buff *skb)
2534 {
2535         struct ieee80211_mgmt *mgmt = (void *)skb->data;
2536
2537         if (!ieee80211_is_action(mgmt->frame_control))
2538                 return false;
2539
2540         if (skb->len < IEEE80211_MIN_ACTION_SIZE +
2541                        sizeof(mgmt->u.action.u.tpc_report))
2542                 return false;
2543
2544         /*
2545          * TPC report - check that:
2546          * category = 0 (Spectrum Management) or 5 (Radio Measurement)
2547          * spectrum management action = 3 (TPC/Link Measurement report)
2548          * TPC report EID = 35
2549          * TPC report element length = 2
2550          *
2551          * The spectrum management's tpc_report struct is used here both for
2552          * parsing tpc_report and radio measurement's link measurement report
2553          * frame, since the relevant part is identical in both frames.
2554          */
2555         if (mgmt->u.action.category != WLAN_CATEGORY_SPECTRUM_MGMT &&
2556             mgmt->u.action.category != WLAN_CATEGORY_RADIO_MEASUREMENT)
2557                 return false;
2558
2559         /* both spectrum mgmt and link measurement have same action code */
2560         if (mgmt->u.action.u.tpc_report.action_code !=
2561             WLAN_ACTION_SPCT_TPC_RPRT)
2562                 return false;
2563
2564         if (mgmt->u.action.u.tpc_report.tpc_elem_id != WLAN_EID_TPC_REPORT ||
2565             mgmt->u.action.u.tpc_report.tpc_elem_length !=
2566             sizeof(struct ieee80211_tpc_report_ie))
2567                 return false;
2568
2569         return true;
2570 }
2571
2572 struct element {
2573         u8 id;
2574         u8 datalen;
2575         u8 data[];
2576 } __packed;
2577
2578 /* element iteration helpers */
2579 #define for_each_element(_elem, _data, _datalen)                        \
2580         for (_elem = (const struct element *)(_data);                   \
2581              (const u8 *)(_data) + (_datalen) - (const u8 *)_elem >=    \
2582                 (int)sizeof(*_elem) &&                                  \
2583              (const u8 *)(_data) + (_datalen) - (const u8 *)_elem >=    \
2584                 (int)sizeof(*_elem) + _elem->datalen;                   \
2585              _elem = (const struct element *)(_elem->data + _elem->datalen))
2586
2587 #define for_each_element_id(element, _id, data, datalen)                \
2588         for_each_element(element, data, datalen)                        \
2589                 if (element->id == (_id))
2590
2591 #define for_each_element_extid(element, extid, data, datalen)           \
2592         for_each_element(element, data, datalen)                        \
2593                 if (element->id == WLAN_EID_EXTENSION &&                \
2594                     element->datalen > 0 &&                             \
2595                     element->data[0] == (extid))
2596
2597 #define for_each_subelement(sub, element)                               \
2598         for_each_element(sub, (element)->data, (element)->datalen)
2599
2600 #define for_each_subelement_id(sub, id, element)                        \
2601         for_each_element_id(sub, id, (element)->data, (element)->datalen)
2602
2603 #define for_each_subelement_extid(sub, extid, element)                  \
2604         for_each_element_extid(sub, extid, (element)->data, (element)->datalen)
2605
2606 /**
2607  * for_each_element_completed - determine if element parsing consumed all data
2608  * @element: element pointer after for_each_element() or friends
2609  * @data: same data pointer as passed to for_each_element() or friends
2610  * @datalen: same data length as passed to for_each_element() or friends
2611  *
2612  * This function returns %true if all the data was parsed or considered
2613  * while walking the elements. Only use this if your for_each_element()
2614  * loop cannot be broken out of, otherwise it always returns %false.
2615  *
2616  * If some data was malformed, this returns %false since the last parsed
2617  * element will not fill the whole remaining data.
2618  */
2619 static inline bool for_each_element_completed(const struct element *element,
2620                                               const void *data, size_t datalen)
2621 {
2622         return (const u8 *)element == (const u8 *)data + datalen;
2623 }
2624
2625 #endif /* LINUX_IEEE80211_H */