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