include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef __LINUX_IEEE80211_H
  16 #define __LINUX_IEEE80211_H
  17
  18 /*
  19  * DS bit usage
  20  *
  21  * TA = transmitter address
  22  * RA = receiver address
  23  * DA = destination address
  24  * SA = source address
  25  *
  26  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  27  * -----------------------------------------------------------------
  28  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  29  *  0       1       DA      BSSID   SA      -       AP -> STA
  30  *  1       0       BSSID   SA      DA      -       AP <- STA
  31  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  32  */
  33
  34 #define FCS_LEN 4
  35
  36 #define IEEE80211_FCTL_VERS             0x0003
  37 #define IEEE80211_FCTL_FTYPE            0x000c
  38 #define IEEE80211_FCTL_STYPE            0x00f0
  39 #define IEEE80211_FCTL_TODS             0x0100
  40 #define IEEE80211_FCTL_FROMDS           0x0200
  41 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  42 #define IEEE80211_FCTL_RETRY            0x0800
  43 #define IEEE80211_FCTL_PM               0x1000
  44 #define IEEE80211_FCTL_MOREDATA         0x2000
  45 #define IEEE80211_FCTL_PROTECTED        0x4000
  46 #define IEEE80211_FCTL_ORDER            0x8000
  47 #define IEEE80211_FCTL_CTL_EXT          0x0f00
  48
  49 #define IEEE80211_SCTL_FRAG             0x000F
  50 #define IEEE80211_SCTL_SEQ              0xFFF0
  51
  52 #define IEEE80211_FTYPE_MGMT            0x0000
  53 #define IEEE80211_FTYPE_CTL             0x0004
  54 #define IEEE80211_FTYPE_DATA            0x0008
  55 #define IEEE80211_FTYPE_EXT             0x000c
  56
  57 /* management */
  58 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  59 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  60 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  61 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  62 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  63 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  64 #define IEEE80211_STYPE_BEACON          0x0080
  65 #define IEEE80211_STYPE_ATIM            0x0090
  66 #define IEEE80211_STYPE_DISASSOC        0x00A0
  67 #define IEEE80211_STYPE_AUTH            0x00B0
  68 #define IEEE80211_STYPE_DEAUTH          0x00C0
  69 #define IEEE80211_STYPE_ACTION          0x00D0
  70
  71 /* control */
  72 #define IEEE80211_STYPE_CTL_EXT         0x0060
  73 #define IEEE80211_STYPE_BACK_REQ        0x0080
  74 #define IEEE80211_STYPE_BACK            0x0090
  75 #define IEEE80211_STYPE_PSPOLL          0x00A0
  76 #define IEEE80211_STYPE_RTS             0x00B0
  77 #define IEEE80211_STYPE_CTS             0x00C0
  78 #define IEEE80211_STYPE_ACK             0x00D0
  79 #define IEEE80211_STYPE_CFEND           0x00E0
  80 #define IEEE80211_STYPE_CFENDACK        0x00F0
  81
  82 /* data */
  83 #define IEEE80211_STYPE_DATA                    0x0000
  84 #define IEEE80211_STYPE_DATA_CFACK              0x0010
  85 #define IEEE80211_STYPE_DATA_CFPOLL             0x0020
  86 #define IEEE80211_STYPE_DATA_CFACKPOLL          0x0030
  87 #define IEEE80211_STYPE_NULLFUNC                0x0040
  88 #define IEEE80211_STYPE_CFACK                   0x0050
  89 #define IEEE80211_STYPE_CFPOLL                  0x0060
  90 #define IEEE80211_STYPE_CFACKPOLL               0x0070
  91 #define IEEE80211_STYPE_QOS_DATA                0x0080
  92 #define IEEE80211_STYPE_QOS_DATA_CFACK          0x0090
  93 #define IEEE80211_STYPE_QOS_DATA_CFPOLL         0x00A0
  94 #define IEEE80211_STYPE_QOS_DATA_CFACKPOLL      0x00B0
  95 #define IEEE80211_STYPE_QOS_NULLFUNC            0x00C0
  96 #define IEEE80211_STYPE_QOS_CFACK               0x00D0
  97 #define IEEE80211_STYPE_QOS_CFPOLL              0x00E0
  98 #define IEEE80211_STYPE_QOS_CFACKPOLL           0x00F0
  99
 100 /* extension, added by 802.11ad */
 101 #define IEEE80211_STYPE_DMG_BEACON              0x0000
 102
 103 /* control extension - for IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTL_EXT */
 104 #define IEEE80211_CTL_EXT_POLL          0x2000
 105 #define IEEE80211_CTL_EXT_SPR           0x3000
 106 #define IEEE80211_CTL_EXT_GRANT 0x4000
 107 #define IEEE80211_CTL_EXT_DMG_CTS       0x5000
 108 #define IEEE80211_CTL_EXT_DMG_DTS       0x6000
 109 #define IEEE80211_CTL_EXT_SSW           0x8000
 110 #define IEEE80211_CTL_EXT_SSW_FBACK     0x9000
 111 #define IEEE80211_CTL_EXT_SSW_ACK       0xa000
 112
 113 /* miscellaneous IEEE 802.11 constants */
 114 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 115 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 116 #define IEEE80211_MAX_AID               2007
 117 #define IEEE80211_MAX_TIM_LEN           251
 118 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 119    6.2.1.1.2.
 120
 121    802.11e clarifies the figure in section 7.1.2. The frame body is
 122    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 123 #define IEEE80211_MAX_DATA_LEN          2304
 124 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 125 #define IEEE80211_MAX_FRAME_LEN         2352
 126
 127 #define IEEE80211_MAX_SSID_LEN          32
 128
 129 #define IEEE80211_MAX_MESH_ID_LEN       32
 130
 131 #define IEEE80211_NUM_TIDS              16
 132
 133 #define IEEE80211_QOS_CTL_LEN           2
 134 /* 1d tag mask */
 135 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 136 /* TID mask */
 137 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 138 /* EOSP */
 139 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 140 /* ACK policy */
 141 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 142 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 143 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 144 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 145 #define IEEE80211_QOS_CTL_ACK_POLICY_MASK       0x0060
 146 /* A-MSDU 802.11n */
 147 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 148 /* Mesh Control 802.11s */
 149 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 150
 151 /* U-APSD queue for WMM IEs sent by AP */
 152 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 153 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 154
 155 /* U-APSD queues for WMM IEs sent by STA */
 156 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 157 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 158 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 159 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 160 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 161
 162 /* U-APSD max SP length for WMM IEs sent by STA */
 163 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 164 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 165 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 166 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 167 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 168 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 169
 170 #define IEEE80211_HT_CTL_LEN            4
 171
 172 struct ieee80211_hdr {
 173         __le16 frame_control;
 174         __le16 duration_id;
 175         u8 addr1[6];
 176         u8 addr2[6];
 177         u8 addr3[6];
 178         __le16 seq_ctrl;
 179         u8 addr4[6];
 180 } __attribute__ ((packed));
 181
 182 struct ieee80211_hdr_3addr {
 183         __le16 frame_control;
 184         __le16 duration_id;
 185         u8 addr1[6];
 186         u8 addr2[6];
 187         u8 addr3[6];
 188         __le16 seq_ctrl;
 189 } __attribute__ ((packed));
 190
 191 struct ieee80211_qos_hdr {
 192         __le16 frame_control;
 193         __le16 duration_id;
 194         u8 addr1[6];
 195         u8 addr2[6];
 196         u8 addr3[6];
 197         __le16 seq_ctrl;
 198         __le16 qos_ctrl;
 199 } __attribute__ ((packed));
 200
 201 /**
 202  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 203  * @fc: frame control bytes in little-endian byteorder
 204  */
 205 static inline int ieee80211_has_tods(__le16 fc)
 206 {
 207         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 208 }
 209
 210 /**
 211  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 212  * @fc: frame control bytes in little-endian byteorder
 213  */
 214 static inline int ieee80211_has_fromds(__le16 fc)
 215 {
 216         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 217 }
 218
 219 /**
 220  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 221  * @fc: frame control bytes in little-endian byteorder
 222  */
 223 static inline int ieee80211_has_a4(__le16 fc)
 224 {
 225         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 226         return (fc & tmp) == tmp;
 227 }
 228
 229 /**
 230  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 231  * @fc: frame control bytes in little-endian byteorder
 232  */
 233 static inline int ieee80211_has_morefrags(__le16 fc)
 234 {
 235         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 236 }
 237
 238 /**
 239  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 240  * @fc: frame control bytes in little-endian byteorder
 241  */
 242 static inline int ieee80211_has_retry(__le16 fc)
 243 {
 244         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 245 }
 246
 247 /**
 248  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 249  * @fc: frame control bytes in little-endian byteorder
 250  */
 251 static inline int ieee80211_has_pm(__le16 fc)
 252 {
 253         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 254 }
 255
 256 /**
 257  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 258  * @fc: frame control bytes in little-endian byteorder
 259  */
 260 static inline int ieee80211_has_moredata(__le16 fc)
 261 {
 262         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 263 }
 264
 265 /**
 266  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 267  * @fc: frame control bytes in little-endian byteorder
 268  */
 269 static inline int ieee80211_has_protected(__le16 fc)
 270 {
 271         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 272 }
 273
 274 /**
 275  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 276  * @fc: frame control bytes in little-endian byteorder
 277  */
 278 static inline int ieee80211_has_order(__le16 fc)
 279 {
 280         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 281 }
 282
 283 /**
 284  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 285  * @fc: frame control bytes in little-endian byteorder
 286  */
 287 static inline int ieee80211_is_mgmt(__le16 fc)
 288 {
 289         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 290                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 291 }
 292
 293 /**
 294  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 295  * @fc: frame control bytes in little-endian byteorder
 296  */
 297 static inline int ieee80211_is_ctl(__le16 fc)
 298 {
 299         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 300                cpu_to_le16(IEEE80211_FTYPE_CTL);
 301 }
 302
 303 /**
 304  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 305  * @fc: frame control bytes in little-endian byteorder
 306  */
 307 static inline int ieee80211_is_data(__le16 fc)
 308 {
 309         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 310                cpu_to_le16(IEEE80211_FTYPE_DATA);
 311 }
 312
 313 /**
 314  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 315  * @fc: frame control bytes in little-endian byteorder
 316  */
 317 static inline int ieee80211_is_data_qos(__le16 fc)
 318 {
 319         /*
 320          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 321          * to check the one bit
 322          */
 323         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 324                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 325 }
 326
 327 /**
 328  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 329  * @fc: frame control bytes in little-endian byteorder
 330  */
 331 static inline int ieee80211_is_data_present(__le16 fc)
 332 {
 333         /*
 334          * mask with 0x40 and test that that bit is clear to only return true
 335          * for the data-containing substypes.
 336          */
 337         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 338                cpu_to_le16(IEEE80211_FTYPE_DATA);
 339 }
 340
 341 /**
 342  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 343  * @fc: frame control bytes in little-endian byteorder
 344  */
 345 static inline int ieee80211_is_assoc_req(__le16 fc)
 346 {
 347         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 348                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 349 }
 350
 351 /**
 352  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 353  * @fc: frame control bytes in little-endian byteorder
 354  */
 355 static inline int ieee80211_is_assoc_resp(__le16 fc)
 356 {
 357         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 358                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 359 }
 360
 361 /**
 362  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 363  * @fc: frame control bytes in little-endian byteorder
 364  */
 365 static inline int ieee80211_is_reassoc_req(__le16 fc)
 366 {
 367         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 368                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 369 }
 370
 371 /**
 372  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 373  * @fc: frame control bytes in little-endian byteorder
 374  */
 375 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 376 {
 377         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 378                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 379 }
 380
 381 /**
 382  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 383  * @fc: frame control bytes in little-endian byteorder
 384  */
 385 static inline int ieee80211_is_probe_req(__le16 fc)
 386 {
 387         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 388                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 389 }
 390
 391 /**
 392  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 393  * @fc: frame control bytes in little-endian byteorder
 394  */
 395 static inline int ieee80211_is_probe_resp(__le16 fc)
 396 {
 397         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 398                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 399 }
 400
 401 /**
 402  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 403  * @fc: frame control bytes in little-endian byteorder
 404  */
 405 static inline int ieee80211_is_beacon(__le16 fc)
 406 {
 407         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 408                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 409 }
 410
 411 /**
 412  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 413  * @fc: frame control bytes in little-endian byteorder
 414  */
 415 static inline int ieee80211_is_atim(__le16 fc)
 416 {
 417         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 418                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 419 }
 420
 421 /**
 422  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 423  * @fc: frame control bytes in little-endian byteorder
 424  */
 425 static inline int ieee80211_is_disassoc(__le16 fc)
 426 {
 427         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 428                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 429 }
 430
 431 /**
 432  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 433  * @fc: frame control bytes in little-endian byteorder
 434  */
 435 static inline int ieee80211_is_auth(__le16 fc)
 436 {
 437         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 438                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 439 }
 440
 441 /**
 442  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 443  * @fc: frame control bytes in little-endian byteorder
 444  */
 445 static inline int ieee80211_is_deauth(__le16 fc)
 446 {
 447         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 448                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 449 }
 450
 451 /**
 452  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 453  * @fc: frame control bytes in little-endian byteorder
 454  */
 455 static inline int ieee80211_is_action(__le16 fc)
 456 {
 457         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 458                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 459 }
 460
 461 /**
 462  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 463  * @fc: frame control bytes in little-endian byteorder
 464  */
 465 static inline int ieee80211_is_back_req(__le16 fc)
 466 {
 467         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 468                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 469 }
 470
 471 /**
 472  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 473  * @fc: frame control bytes in little-endian byteorder
 474  */
 475 static inline int ieee80211_is_back(__le16 fc)
 476 {
 477         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 478                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 479 }
 480
 481 /**
 482  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 483  * @fc: frame control bytes in little-endian byteorder
 484  */
 485 static inline int ieee80211_is_pspoll(__le16 fc)
 486 {
 487         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 488                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 489 }
 490
 491 /**
 492  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 493  * @fc: frame control bytes in little-endian byteorder
 494  */
 495 static inline int ieee80211_is_rts(__le16 fc)
 496 {
 497         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 498                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 499 }
 500
 501 /**
 502  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 503  * @fc: frame control bytes in little-endian byteorder
 504  */
 505 static inline int ieee80211_is_cts(__le16 fc)
 506 {
 507         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 508                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 509 }
 510
 511 /**
 512  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 513  * @fc: frame control bytes in little-endian byteorder
 514  */
 515 static inline int ieee80211_is_ack(__le16 fc)
 516 {
 517         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 518                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 519 }
 520
 521 /**
 522  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 523  * @fc: frame control bytes in little-endian byteorder
 524  */
 525 static inline int ieee80211_is_cfend(__le16 fc)
 526 {
 527         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 528                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 529 }
 530
 531 /**
 532  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 533  * @fc: frame control bytes in little-endian byteorder
 534  */
 535 static inline int ieee80211_is_cfendack(__le16 fc)
 536 {
 537         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 538                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 539 }
 540
 541 /**
 542  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 543  * @fc: frame control bytes in little-endian byteorder
 544  */
 545 static inline int ieee80211_is_nullfunc(__le16 fc)
 546 {
 547         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 548                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 549 }
 550
 551 /**
 552  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 553  * @fc: frame control bytes in little-endian byteorder
 554  */
 555 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 556 {
 557         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 558                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 559 }
 560
 561 static inline unsigned int ieee80211_hdrlen(__le16 fc)
 562 {
 563         unsigned int hdrlen = 24;
 564
 565         if (ieee80211_has_a4(fc))
 566                 hdrlen = 30;
 567
 568         if (ieee80211_is_data_qos(fc)) {
 569                 hdrlen += IEEE80211_QOS_CTL_LEN;
 570                 if (ieee80211_has_order(fc))
 571                         hdrlen += IEEE80211_HT_CTL_LEN;
 572         }
 573
 574         return hdrlen;
 575 }
 576
 577 /**
 578  * ieee80211_is_first_frag - check if IEEE80211_SCTL_FRAG is not set
 579  * @seq_ctrl: frame sequence control bytes in little-endian byteorder
 580  */
 581 static inline int ieee80211_is_first_frag(__le16 seq_ctrl)
 582 {
 583         return (seq_ctrl & cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0;
 584 }
 585
 586 struct ieee80211s_hdr {
 587         u8 flags;
 588         u8 ttl;
 589         __le32 seqnum;
 590         u8 eaddr1[6];
 591         u8 eaddr2[6];
 592 } __attribute__ ((packed));
 593
 594 /* Mesh flags */
 595 #define MESH_FLAGS_AE_A4        0x1
 596 #define MESH_FLAGS_AE_A5_A6     0x2
 597 #define MESH_FLAGS_AE           0x3
 598 #define MESH_FLAGS_PS_DEEP      0x4
 599
 600 /**
 601  * enum ieee80211_preq_flags - mesh PREQ element flags
 602  *
 603  * @IEEE80211_PREQ_PROACTIVE_PREP_FLAG: proactive PREP subfield
 604  */
 605 enum ieee80211_preq_flags {
 606         IEEE80211_PREQ_PROACTIVE_PREP_FLAG      = 1<<2,
 607 };
 608
 609 /**
 610  * enum ieee80211_preq_target_flags - mesh PREQ element per target flags
 611  *
 612  * @IEEE80211_PREQ_TO_FLAG: target only subfield
 613  * @IEEE80211_PREQ_USN_FLAG: unknown target HWMP sequence number subfield
 614  */
 615 enum ieee80211_preq_target_flags {
 616         IEEE80211_PREQ_TO_FLAG  = 1<<0,
 617         IEEE80211_PREQ_USN_FLAG = 1<<2,
 618 };
 619
 620 /**
 621  * struct ieee80211_quiet_ie
 622  *
 623  * This structure refers to "Quiet information element"
 624  */
 625 struct ieee80211_quiet_ie {
 626         u8 count;
 627         u8 period;
 628         __le16 duration;
 629         __le16 offset;
 630 } __attribute__ ((packed));
 631
 632 /**
 633  * struct ieee80211_msrment_ie
 634  *
 635  * This structure refers to "Measurement Request/Report information element"
 636  */
 637 struct ieee80211_msrment_ie {
 638         u8 token;
 639         u8 mode;
 640         u8 type;
 641         u8 request[0];
 642 } __attribute__ ((packed));
 643
 644 /**
 645  * struct ieee80211_channel_sw_ie
 646  *
 647  * This structure refers to "Channel Switch Announcement information element"
 648  */
 649 struct ieee80211_channel_sw_ie {
 650         u8 mode;
 651         u8 new_ch_num;
 652         u8 count;
 653 } __attribute__ ((packed));
 654
 655 /**
 656  * struct ieee80211_tim
 657  *
 658  * This structure refers to "Traffic Indication Map information element"
 659  */
 660 struct ieee80211_tim_ie {
 661         u8 dtim_count;
 662         u8 dtim_period;
 663         u8 bitmap_ctrl;
 664         /* variable size: 1 - 251 bytes */
 665         u8 virtual_map[1];
 666 } __attribute__ ((packed));
 667
 668 /**
 669  * struct ieee80211_meshconf_ie
 670  *
 671  * This structure refers to "Mesh Configuration information element"
 672  */
 673 struct ieee80211_meshconf_ie {
 674         u8 meshconf_psel;
 675         u8 meshconf_pmetric;
 676         u8 meshconf_congest;
 677         u8 meshconf_synch;
 678         u8 meshconf_auth;
 679         u8 meshconf_form;
 680         u8 meshconf_cap;
 681 } __attribute__ ((packed));
 682
 683 /**
 684  * struct ieee80211_rann_ie
 685  *
 686  * This structure refers to "Root Announcement information element"
 687  */
 688 struct ieee80211_rann_ie {
 689         u8 rann_flags;
 690         u8 rann_hopcount;
 691         u8 rann_ttl;
 692         u8 rann_addr[6];
 693         __le32 rann_seq;
 694         __le32 rann_interval;
 695         __le32 rann_metric;
 696 } __attribute__ ((packed));
 697
 698 enum ieee80211_rann_flags {
 699         RANN_FLAG_IS_GATE = 1 << 0,
 700 };
 701
 702 #define WLAN_SA_QUERY_TR_ID_LEN 2
 703
 704 struct ieee80211_mgmt {
 705         __le16 frame_control;
 706         __le16 duration;
 707         u8 da[6];
 708         u8 sa[6];
 709         u8 bssid[6];
 710         __le16 seq_ctrl;
 711         union {
 712                 struct {
 713                         __le16 auth_alg;
 714                         __le16 auth_transaction;
 715                         __le16 status_code;
 716                         /* possibly followed by Challenge text */
 717                         u8 variable[0];
 718                 } __attribute__ ((packed)) auth;
 719                 struct {
 720                         __le16 reason_code;
 721                 } __attribute__ ((packed)) deauth;
 722                 struct {
 723                         __le16 capab_info;
 724                         __le16 listen_interval;
 725                         /* followed by SSID and Supported rates */
 726                         u8 variable[0];
 727                 } __attribute__ ((packed)) assoc_req;
 728                 struct {
 729                         __le16 capab_info;
 730                         __le16 status_code;
 731                         __le16 aid;
 732                         /* followed by Supported rates */
 733                         u8 variable[0];
 734                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 735                 struct {
 736                         __le16 capab_info;
 737                         __le16 listen_interval;
 738                         u8 current_ap[6];
 739                         /* followed by SSID and Supported rates */
 740                         u8 variable[0];
 741                 } __attribute__ ((packed)) reassoc_req;
 742                 struct {
 743                         __le16 reason_code;
 744                 } __attribute__ ((packed)) disassoc;
 745                 struct {
 746                         __le64 timestamp;
 747                         __le16 beacon_int;
 748                         __le16 capab_info;
 749                         /* followed by some of SSID, Supported rates,
 750                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 751                         u8 variable[0];
 752                 } __attribute__ ((packed)) beacon;
 753                 struct {
 754                         /* only variable items: SSID, Supported rates */
 755                         u8 variable[0];
 756                 } __attribute__ ((packed)) probe_req;
 757                 struct {
 758                         __le64 timestamp;
 759                         __le16 beacon_int;
 760                         __le16 capab_info;
 761                         /* followed by some of SSID, Supported rates,
 762                          * FH Params, DS Params, CF Params, IBSS Params */
 763                         u8 variable[0];
 764                 } __attribute__ ((packed)) probe_resp;
 765                 struct {
 766                         u8 category;
 767                         union {
 768                                 struct {
 769                                         u8 action_code;
 770                                         u8 dialog_token;
 771                                         u8 status_code;
 772                                         u8 variable[0];
 773                                 } __attribute__ ((packed)) wme_action;
 774                                 struct{
 775                                         u8 action_code;
 776                                         u8 element_id;
 777                                         u8 length;
 778                                         struct ieee80211_channel_sw_ie sw_elem;
 779                                 } __attribute__((packed)) chan_switch;
 780                                 struct{
 781                                         u8 action_code;
 782                                         u8 dialog_token;
 783                                         u8 element_id;
 784                                         u8 length;
 785                                         struct ieee80211_msrment_ie msr_elem;
 786                                 } __attribute__((packed)) measurement;
 787                                 struct{
 788                                         u8 action_code;
 789                                         u8 dialog_token;
 790                                         __le16 capab;
 791                                         __le16 timeout;
 792                                         __le16 start_seq_num;
 793                                 } __attribute__((packed)) addba_req;
 794                                 struct{
 795                                         u8 action_code;
 796                                         u8 dialog_token;
 797                                         __le16 status;
 798                                         __le16 capab;
 799                                         __le16 timeout;
 800                                 } __attribute__((packed)) addba_resp;
 801                                 struct{
 802                                         u8 action_code;
 803                                         __le16 params;
 804                                         __le16 reason_code;
 805                                 } __attribute__((packed)) delba;
 806                                 struct {
 807                                         u8 action_code;
 808                                         u8 variable[0];
 809                                 } __attribute__((packed)) self_prot;
 810                                 struct{
 811                                         u8 action_code;
 812                                         u8 variable[0];
 813                                 } __attribute__((packed)) mesh_action;
 814                                 struct {
 815                                         u8 action;
 816                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 817                                 } __attribute__ ((packed)) sa_query;
 818                                 struct {
 819                                         u8 action;
 820                                         u8 smps_control;
 821                                 } __attribute__ ((packed)) ht_smps;
 822                                 struct {
 823                                         u8 action_code;
 824                                         u8 dialog_token;
 825                                         __le16 capability;
 826                                         u8 variable[0];
 827                                 } __packed tdls_discover_resp;
 828                         } u;
 829                 } __attribute__ ((packed)) action;
 830         } u;
 831 } __attribute__ ((packed));
 832
 833 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 834 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 835
 836 /* mgmt header + 1 byte category code */
 837 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 838
 839
 840 /* Management MIC information element (IEEE 802.11w) */
 841 struct ieee80211_mmie {
 842         u8 element_id;
 843         u8 length;
 844         __le16 key_id;
 845         u8 sequence_number[6];
 846         u8 mic[8];
 847 } __attribute__ ((packed));
 848
 849 struct ieee80211_vendor_ie {
 850         u8 element_id;
 851         u8 len;
 852         u8 oui[3];
 853         u8 oui_type;
 854 } __packed;
 855
 856 /* Control frames */
 857 struct ieee80211_rts {
 858         __le16 frame_control;
 859         __le16 duration;
 860         u8 ra[6];
 861         u8 ta[6];
 862 } __attribute__ ((packed));
 863
 864 struct ieee80211_cts {
 865         __le16 frame_control;
 866         __le16 duration;
 867         u8 ra[6];
 868 } __attribute__ ((packed));
 869
 870 struct ieee80211_pspoll {
 871         __le16 frame_control;
 872         __le16 aid;
 873         u8 bssid[6];
 874         u8 ta[6];
 875 } __attribute__ ((packed));
 876
 877 /* TDLS */
 878
 879 /* Link-id information element */
 880 struct ieee80211_tdls_lnkie {
 881         u8 ie_type; /* Link Identifier IE */
 882         u8 ie_len;
 883         u8 bssid[6];
 884         u8 init_sta[6];
 885         u8 resp_sta[6];
 886 } __packed;
 887
 888 struct ieee80211_tdls_data {
 889         u8 da[6];
 890         u8 sa[6];
 891         __be16 ether_type;
 892         u8 payload_type;
 893         u8 category;
 894         u8 action_code;
 895         union {
 896                 struct {
 897                         u8 dialog_token;
 898                         __le16 capability;
 899                         u8 variable[0];
 900                 } __packed setup_req;
 901                 struct {
 902                         __le16 status_code;
 903                         u8 dialog_token;
 904                         __le16 capability;
 905                         u8 variable[0];
 906                 } __packed setup_resp;
 907                 struct {
 908                         __le16 status_code;
 909                         u8 dialog_token;
 910                         u8 variable[0];
 911                 } __packed setup_cfm;
 912                 struct {
 913                         __le16 reason_code;
 914                         u8 variable[0];
 915                 } __packed teardown;
 916                 struct {
 917                         u8 dialog_token;
 918                         u8 variable[0];
 919                 } __packed discover_req;
 920         } u;
 921 } __packed;
 922
 923 /*
 924  * Peer-to-Peer IE attribute related definitions.
 925  */
 926 /**
 927  * enum ieee80211_p2p_attr_id - identifies type of peer-to-peer attribute.
 928  */
 929 enum ieee80211_p2p_attr_id {
 930         IEEE80211_P2P_ATTR_STATUS = 0,
 931         IEEE80211_P2P_ATTR_MINOR_REASON,
 932         IEEE80211_P2P_ATTR_CAPABILITY,
 933         IEEE80211_P2P_ATTR_DEVICE_ID,
 934         IEEE80211_P2P_ATTR_GO_INTENT,
 935         IEEE80211_P2P_ATTR_GO_CONFIG_TIMEOUT,
 936         IEEE80211_P2P_ATTR_LISTEN_CHANNEL,
 937         IEEE80211_P2P_ATTR_GROUP_BSSID,
 938         IEEE80211_P2P_ATTR_EXT_LISTEN_TIMING,
 939         IEEE80211_P2P_ATTR_INTENDED_IFACE_ADDR,
 940         IEEE80211_P2P_ATTR_MANAGABILITY,
 941         IEEE80211_P2P_ATTR_CHANNEL_LIST,
 942         IEEE80211_P2P_ATTR_ABSENCE_NOTICE,
 943         IEEE80211_P2P_ATTR_DEVICE_INFO,
 944         IEEE80211_P2P_ATTR_GROUP_INFO,
 945         IEEE80211_P2P_ATTR_GROUP_ID,
 946         IEEE80211_P2P_ATTR_INTERFACE,
 947         IEEE80211_P2P_ATTR_OPER_CHANNEL,
 948         IEEE80211_P2P_ATTR_INVITE_FLAGS,
 949         /* 19 - 220: Reserved */
 950         IEEE80211_P2P_ATTR_VENDOR_SPECIFIC = 221,
 951
 952         IEEE80211_P2P_ATTR_MAX
 953 };
 954
 955 /**
 956  * struct ieee80211_bar - HT Block Ack Request
 957  *
 958  * This structure refers to "HT BlockAckReq" as
 959  * described in 802.11n draft section 7.2.1.7.1
 960  */
 961 struct ieee80211_bar {
 962         __le16 frame_control;
 963         __le16 duration;
 964         __u8 ra[6];
 965         __u8 ta[6];
 966         __le16 control;
 967         __le16 start_seq_num;
 968 } __attribute__((packed)) __aligned(4);
 969
 970 /* 802.11 BA(R) control masks */
 971 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 972 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 973 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 974 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 975 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 976
 977 /**
 978  * struct ieee80211_ba - HT Block Ack
 979  *
 980  * This structure refers to "HT BlockAck" as
 981  * described in 802.11n draft section 7.2.1.8.1
 982  */
 983 struct ieee80211_ba {
 984         __le16 frame_control;
 985         __le16 duration;
 986         u8 ra[6];
 987         u8 ta[6];
 988         __le16 control;
 989
 990         __le16 start_seq_num;
 991         u8 bitmap[8];
 992 } __attribute__((packed));
 993
 994 #define IEEE80211_HT_MCS_MASK_LEN               10
 995
 996 /**
 997  * struct ieee80211_mcs_info - MCS information
 998  * @rx_mask: RX mask
 999  * @rx_highest: highest supported RX rate. If set represents
1000  *      the highest supported RX data rate in units of 1 Mbps.
1001  *      If this field is 0 this value should not be used to
1002  *      consider the highest RX data rate supported.
1003  * @tx_params: TX parameters
1004  */
1005 struct ieee80211_mcs_info {
1006         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
1007         __le16 rx_highest;
1008         u8 tx_params;
1009         u8 reserved[3];
1010 } __attribute__((packed));
1011
1012 /* 802.11n HT capability MSC set */
1013 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
1014 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
1015 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
1016 /* value 0 == 1 stream etc */
1017 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
1018 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
1019 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
1020 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
1021
1022 /*
1023  * 802.11n D5.0 20.3.5 / 20.6 says:
1024  * - indices 0 to 7 and 32 are single spatial stream
1025  * - 8 to 31 are multiple spatial streams using equal modulation
1026  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
1027  * - remainder are multiple spatial streams using unequal modulation
1028  */
1029 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
1030 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
1031         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
1032
1033 /**
1034  * struct ieee80211_ht_cap - HT capabilities
1035  *
1036  * This structure is the "HT capabilities element" as
1037  * described in 802.11n D5.0 7.3.2.57
1038  */
1039 struct ieee80211_ht_cap {
1040         __le16 cap_info;
1041         u8 ampdu_params_info;
1042
1043         /* 16 bytes MCS information */
1044         struct ieee80211_mcs_info mcs;
1045
1046         __le16 extended_ht_cap_info;
1047         __le32 tx_BF_cap_info;
1048         u8 antenna_selection_info;
1049 } __attribute__ ((packed));
1050
1051 /* 802.11n HT capabilities masks (for cap_info) */
1052 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
1053 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
1054 #define IEEE80211_HT_CAP_SM_PS                  0x000C
1055 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
1056 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
1057 #define IEEE80211_HT_CAP_SGI_20                 0x0020
1058 #define IEEE80211_HT_CAP_SGI_40                 0x0040
1059 #define IEEE80211_HT_CAP_TX_STBC                0x0080
1060 #define IEEE80211_HT_CAP_RX_STBC                0x0300
1061 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
1062 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
1063 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
1064 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
1065 #define IEEE80211_HT_CAP_RESERVED               0x2000
1066 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
1067 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
1068
1069 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
1070 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
1071 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
1072 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
1073 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
1074 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
1075 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
1076 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
1077
1078 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
1079 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
1080 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
1081 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
1082
1083 /*
1084  * Maximum length of AMPDU that the STA can receive.
1085  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
1086  */
1087 enum ieee80211_max_ampdu_length_exp {
1088         IEEE80211_HT_MAX_AMPDU_8K = 0,
1089         IEEE80211_HT_MAX_AMPDU_16K = 1,
1090         IEEE80211_HT_MAX_AMPDU_32K = 2,
1091         IEEE80211_HT_MAX_AMPDU_64K = 3
1092 };
1093
1094 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
1095
1096 /* Minimum MPDU start spacing */
1097 enum ieee80211_min_mpdu_spacing {
1098         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
1099         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
1100         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
1101         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
1102         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
1103         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
1104         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
1105         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
1106 };
1107
1108 /**
1109  * struct ieee80211_ht_operation - HT operation IE
1110  *
1111  * This structure is the "HT operation element" as
1112  * described in 802.11n-2009 7.3.2.57
1113  */
1114 struct ieee80211_ht_operation {
1115         u8 primary_chan;
1116         u8 ht_param;
1117         __le16 operation_mode;
1118         __le16 stbc_param;
1119         u8 basic_set[16];
1120 } __attribute__ ((packed));
1121
1122 /* for ht_param */
1123 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1124 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1125 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1126 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1127 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1128 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1129
1130 /* for operation_mode */
1131 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1132 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1133 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1134 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1135 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1136 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1137 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1138
1139 /* for stbc_param */
1140 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1141 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1142 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1143 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1144 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1145 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1146
1147
1148 /* block-ack parameters */
1149 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1150 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1151 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1152 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1153 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1154
1155 /*
1156  * A-PMDU buffer sizes
1157  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1158  */
1159 #define IEEE80211_MIN_AMPDU_BUF 0x8
1160 #define IEEE80211_MAX_AMPDU_BUF 0x40
1161
1162
1163 /* Spatial Multiplexing Power Save Modes (for capability) */
1164 #define WLAN_HT_CAP_SM_PS_STATIC        0
1165 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1166 #define WLAN_HT_CAP_SM_PS_INVALID       2
1167 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1168
1169 /* for SM power control field lower two bits */
1170 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1171 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1172 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1173
1174 /**
1175  * struct ieee80211_vht_mcs_info - VHT MCS information
1176  * @rx_mcs_map: RX MCS map 2 bits for each stream, total 8 streams
1177  * @rx_highest: Indicates highest long GI VHT PPDU data rate
1178  *      STA can receive. Rate expressed in units of 1 Mbps.
1179  *      If this field is 0 this value should not be used to
1180  *      consider the highest RX data rate supported.
1181  * @tx_mcs_map: TX MCS map 2 bits for each stream, total 8 streams
1182  * @tx_highest: Indicates highest long GI VHT PPDU data rate
1183  *      STA can transmit. Rate expressed in units of 1 Mbps.
1184  *      If this field is 0 this value should not be used to
1185  *      consider the highest TX data rate supported.
1186  */
1187 struct ieee80211_vht_mcs_info {
1188         __le16 rx_mcs_map;
1189         __le16 rx_highest;
1190         __le16 tx_mcs_map;
1191         __le16 tx_highest;
1192 } __packed;
1193
1194 /**
1195  * struct ieee80211_vht_cap - VHT capabilities
1196  *
1197  * This structure is the "VHT capabilities element" as
1198  * described in 802.11ac D3.0 8.4.2.160
1199  * @vht_cap_info: VHT capability info
1200  * @supp_mcs: VHT MCS supported rates
1201  */
1202 struct ieee80211_vht_cap {
1203         __le32 vht_cap_info;
1204         struct ieee80211_vht_mcs_info supp_mcs;
1205 } __packed;
1206
1207 /**
1208  * struct ieee80211_vht_operation - VHT operation IE
1209  *
1210  * This structure is the "VHT operation element" as
1211  * described in 802.11ac D3.0 8.4.2.161
1212  * @chan_width: Operating channel width
1213  * @center_freq_seg1_idx: center freq segment 1 index
1214  * @center_freq_seg2_idx: center freq segment 2 index
1215  * @basic_mcs_set: VHT Basic MCS rate set
1216  */
1217 struct ieee80211_vht_operation {
1218         u8 chan_width;
1219         u8 center_freq_seg1_idx;
1220         u8 center_freq_seg2_idx;
1221         __le16 basic_mcs_set;
1222 } __packed;
1223
1224
1225 #define IEEE80211_VHT_MCS_ZERO_TO_SEVEN_SUPPORT 0
1226 #define IEEE80211_VHT_MCS_ZERO_TO_EIGHT_SUPPORT 1
1227 #define IEEE80211_VHT_MCS_ZERO_TO_NINE_SUPPORT  2
1228 #define IEEE80211_VHT_MCS_NOT_SUPPORTED 3
1229
1230 /* 802.11ac VHT Capabilities */
1231 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895                0x00000000
1232 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991                0x00000001
1233 #define IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454               0x00000002
1234 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ              0x00000004
1235 #define IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ     0x00000008
1236 #define IEEE80211_VHT_CAP_RXLDPC                              0x00000010
1237 #define IEEE80211_VHT_CAP_SHORT_GI_80                         0x00000020
1238 #define IEEE80211_VHT_CAP_SHORT_GI_160                        0x00000040
1239 #define IEEE80211_VHT_CAP_TXSTBC                              0x00000080
1240 #define IEEE80211_VHT_CAP_RXSTBC_1                            0x00000100
1241 #define IEEE80211_VHT_CAP_RXSTBC_2                            0x00000200
1242 #define IEEE80211_VHT_CAP_RXSTBC_3                            0x00000300
1243 #define IEEE80211_VHT_CAP_RXSTBC_4                            0x00000400
1244 #define IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE               0x00000800
1245 #define IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE               0x00001000
1246 #define IEEE80211_VHT_CAP_BEAMFORMER_ANTENNAS_MAX             0x00006000
1247 #define IEEE80211_VHT_CAP_SOUNDING_DIMENTION_MAX              0x00030000
1248 #define IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE               0x00080000
1249 #define IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE               0x00100000
1250 #define IEEE80211_VHT_CAP_VHT_TXOP_PS                         0x00200000
1251 #define IEEE80211_VHT_CAP_HTC_VHT                             0x00400000
1252 #define IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT          0x00800000
1253 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_UNSOL_MFB   0x08000000
1254 #define IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB     0x0c000000
1255 #define IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN                  0x10000000
1256 #define IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN                  0x20000000
1257
1258 /* Authentication algorithms */
1259 #define WLAN_AUTH_OPEN 0
1260 #define WLAN_AUTH_SHARED_KEY 1
1261 #define WLAN_AUTH_FT 2
1262 #define WLAN_AUTH_SAE 3
1263 #define WLAN_AUTH_LEAP 128
1264
1265 #define WLAN_AUTH_CHALLENGE_LEN 128
1266
1267 #define WLAN_CAPABILITY_ESS             (1<<0)
1268 #define WLAN_CAPABILITY_IBSS            (1<<1)
1269
1270 /*
1271  * A mesh STA sets the ESS and IBSS capability bits to zero.
1272  * however, this holds true for p2p probe responses (in the p2p_find
1273  * phase) as well.
1274  */
1275 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1276         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1277
1278 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1279 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1280 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1281 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1282 #define WLAN_CAPABILITY_PBCC            (1<<6)
1283 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1284
1285 /* 802.11h */
1286 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1287 #define WLAN_CAPABILITY_QOS             (1<<9)
1288 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1289 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1290
1291 /* DMG (60gHz) 802.11ad */
1292 /* type - bits 0..1 */
1293 #define WLAN_CAPABILITY_DMG_TYPE_IBSS           (1<<0) /* Tx by: STA */
1294 #define WLAN_CAPABILITY_DMG_TYPE_PBSS           (2<<0) /* Tx by: PCP */
1295 #define WLAN_CAPABILITY_DMG_TYPE_AP             (3<<0) /* Tx by: AP */
1296
1297 #define WLAN_CAPABILITY_DMG_CBAP_ONLY           (1<<2)
1298 #define WLAN_CAPABILITY_DMG_CBAP_SOURCE (1<<3)
1299 #define WLAN_CAPABILITY_DMG_PRIVACY             (1<<4)
1300 #define WLAN_CAPABILITY_DMG_ECPAC               (1<<5)
1301
1302 #define WLAN_CAPABILITY_DMG_SPECTRUM_MGMT       (1<<8)
1303 #define WLAN_CAPABILITY_DMG_RADIO_MEASURE       (1<<12)
1304
1305 /* measurement */
1306 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1307 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1308 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1309
1310 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1311 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1312 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1313
1314 /* 802.11g ERP information element */
1315 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1316 #define WLAN_ERP_USE_PROTECTION (1<<1)
1317 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1318
1319 /* WLAN_ERP_BARKER_PREAMBLE values */
1320 enum {
1321         WLAN_ERP_PREAMBLE_SHORT = 0,
1322         WLAN_ERP_PREAMBLE_LONG = 1,
1323 };
1324
1325 /* Band ID, 802.11ad #8.4.1.45 */
1326 enum {
1327         IEEE80211_BANDID_TV_WS = 0, /* TV white spaces */
1328         IEEE80211_BANDID_SUB1  = 1, /* Sub-1 GHz (excluding TV white spaces) */
1329         IEEE80211_BANDID_2G    = 2, /* 2.4 GHz */
1330         IEEE80211_BANDID_3G    = 3, /* 3.6 GHz */
1331         IEEE80211_BANDID_5G    = 4, /* 4.9 and 5 GHz */
1332         IEEE80211_BANDID_60G   = 5, /* 60 GHz */
1333 };
1334
1335 /* Status codes */
1336 enum ieee80211_statuscode {
1337         WLAN_STATUS_SUCCESS = 0,
1338         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1339         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1340         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1341         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1342         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1343         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1344         WLAN_STATUS_CHALLENGE_FAIL = 15,
1345         WLAN_STATUS_AUTH_TIMEOUT = 16,
1346         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1347         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1348         /* 802.11b */
1349         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1350         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1351         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1352         /* 802.11h */
1353         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1354         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1355         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1356         /* 802.11g */
1357         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1358         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1359         /* 802.11w */
1360         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1361         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1362         /* 802.11i */
1363         WLAN_STATUS_INVALID_IE = 40,
1364         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1365         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1366         WLAN_STATUS_INVALID_AKMP = 43,
1367         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1368         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1369         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1370         /* 802.11e */
1371         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1372         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1373         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1374         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1375         WLAN_STATUS_REQUEST_DECLINED = 37,
1376         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1377         WLAN_STATUS_CHANGE_TSPEC = 39,
1378         WLAN_STATUS_WAIT_TS_DELAY = 47,
1379         WLAN_STATUS_NO_DIRECT_LINK = 48,
1380         WLAN_STATUS_STA_NOT_PRESENT = 49,
1381         WLAN_STATUS_STA_NOT_QSTA = 50,
1382         /* 802.11s */
1383         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1384         WLAN_STATUS_FCG_NOT_SUPP = 78,
1385         WLAN_STATUS_STA_NO_TBTT = 78,
1386         /* 802.11ad */
1387         WLAN_STATUS_REJECTED_WITH_SUGGESTED_CHANGES = 39,
1388         WLAN_STATUS_REJECTED_FOR_DELAY_PERIOD = 47,
1389         WLAN_STATUS_REJECT_WITH_SCHEDULE = 83,
1390         WLAN_STATUS_PENDING_ADMITTING_FST_SESSION = 86,
1391         WLAN_STATUS_PERFORMING_FST_NOW = 87,
1392         WLAN_STATUS_PENDING_GAP_IN_BA_WINDOW = 88,
1393         WLAN_STATUS_REJECT_U_PID_SETTING = 89,
1394         WLAN_STATUS_REJECT_DSE_BAND = 96,
1395         WLAN_STATUS_DENIED_WITH_SUGGESTED_BAND_AND_CHANNEL = 99,
1396         WLAN_STATUS_DENIED_DUE_TO_SPECTRUM_MANAGEMENT = 103,
1397 };
1398
1399
1400 /* Reason codes */
1401 enum ieee80211_reasoncode {
1402         WLAN_REASON_UNSPECIFIED = 1,
1403         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1404         WLAN_REASON_DEAUTH_LEAVING = 3,
1405         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1406         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1407         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1408         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1409         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1410         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1411         /* 802.11h */
1412         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1413         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1414         /* 802.11i */
1415         WLAN_REASON_INVALID_IE = 13,
1416         WLAN_REASON_MIC_FAILURE = 14,
1417         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1418         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1419         WLAN_REASON_IE_DIFFERENT = 17,
1420         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1421         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1422         WLAN_REASON_INVALID_AKMP = 20,
1423         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1424         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1425         WLAN_REASON_IEEE8021X_FAILED = 23,
1426         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1427         /* 802.11e */
1428         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1429         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1430         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1431         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1432         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1433         WLAN_REASON_QSTA_NOT_USE = 37,
1434         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1435         WLAN_REASON_QSTA_TIMEOUT = 39,
1436         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1437         /* 802.11s */
1438         WLAN_REASON_MESH_PEER_CANCELED = 52,
1439         WLAN_REASON_MESH_MAX_PEERS = 53,
1440         WLAN_REASON_MESH_CONFIG = 54,
1441         WLAN_REASON_MESH_CLOSE = 55,
1442         WLAN_REASON_MESH_MAX_RETRIES = 56,
1443         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1444         WLAN_REASON_MESH_INVALID_GTK = 58,
1445         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1446         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1447         WLAN_REASON_MESH_PATH_ERROR = 61,
1448         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1449         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1450         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1451         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1452         WLAN_REASON_MESH_CHAN = 66,
1453 };
1454
1455
1456 /* Information Element IDs */
1457 enum ieee80211_eid {
1458         WLAN_EID_SSID = 0,
1459         WLAN_EID_SUPP_RATES = 1,
1460         WLAN_EID_FH_PARAMS = 2,
1461         WLAN_EID_DS_PARAMS = 3,
1462         WLAN_EID_CF_PARAMS = 4,
1463         WLAN_EID_TIM = 5,
1464         WLAN_EID_IBSS_PARAMS = 6,
1465         WLAN_EID_CHALLENGE = 16,
1466
1467         WLAN_EID_COUNTRY = 7,
1468         WLAN_EID_HP_PARAMS = 8,
1469         WLAN_EID_HP_TABLE = 9,
1470         WLAN_EID_REQUEST = 10,
1471
1472         WLAN_EID_QBSS_LOAD = 11,
1473         WLAN_EID_EDCA_PARAM_SET = 12,
1474         WLAN_EID_TSPEC = 13,
1475         WLAN_EID_TCLAS = 14,
1476         WLAN_EID_SCHEDULE = 15,
1477         WLAN_EID_TS_DELAY = 43,
1478         WLAN_EID_TCLAS_PROCESSING = 44,
1479         WLAN_EID_QOS_CAPA = 46,
1480         /* 802.11z */
1481         WLAN_EID_LINK_ID = 101,
1482         /* 802.11s */
1483         WLAN_EID_MESH_CONFIG = 113,
1484         WLAN_EID_MESH_ID = 114,
1485         WLAN_EID_LINK_METRIC_REPORT = 115,
1486         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1487         WLAN_EID_PEER_MGMT = 117,
1488         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1489         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1490         WLAN_EID_BEACON_TIMING = 120,
1491         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1492         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1493         WLAN_EID_MCCAOP_ADVERT = 123,
1494         WLAN_EID_MCCAOP_TEARDOWN = 124,
1495         WLAN_EID_GANN = 125,
1496         WLAN_EID_RANN = 126,
1497         WLAN_EID_PREQ = 130,
1498         WLAN_EID_PREP = 131,
1499         WLAN_EID_PERR = 132,
1500         WLAN_EID_PXU = 137,
1501         WLAN_EID_PXUC = 138,
1502         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1503         WLAN_EID_MIC = 140,
1504
1505         WLAN_EID_PWR_CONSTRAINT = 32,
1506         WLAN_EID_PWR_CAPABILITY = 33,
1507         WLAN_EID_TPC_REQUEST = 34,
1508         WLAN_EID_TPC_REPORT = 35,
1509         WLAN_EID_SUPPORTED_CHANNELS = 36,
1510         WLAN_EID_CHANNEL_SWITCH = 37,
1511         WLAN_EID_MEASURE_REQUEST = 38,
1512         WLAN_EID_MEASURE_REPORT = 39,
1513         WLAN_EID_QUIET = 40,
1514         WLAN_EID_IBSS_DFS = 41,
1515
1516         WLAN_EID_ERP_INFO = 42,
1517         WLAN_EID_EXT_SUPP_RATES = 50,
1518
1519         WLAN_EID_HT_CAPABILITY = 45,
1520         WLAN_EID_HT_OPERATION = 61,
1521
1522         WLAN_EID_RSN = 48,
1523         WLAN_EID_MMIE = 76,
1524         WLAN_EID_VENDOR_SPECIFIC = 221,
1525         WLAN_EID_QOS_PARAMETER = 222,
1526
1527         WLAN_EID_AP_CHAN_REPORT = 51,
1528         WLAN_EID_NEIGHBOR_REPORT = 52,
1529         WLAN_EID_RCPI = 53,
1530         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1531         WLAN_EID_ANTENNA_INFO = 64,
1532         WLAN_EID_RSNI = 65,
1533         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1534         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1535         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1536         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1537         WLAN_EID_MULTIPLE_BSSID = 71,
1538         WLAN_EID_BSS_COEX_2040 = 72,
1539         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1540         WLAN_EID_EXT_CAPABILITY = 127,
1541
1542         WLAN_EID_MOBILITY_DOMAIN = 54,
1543         WLAN_EID_FAST_BSS_TRANSITION = 55,
1544         WLAN_EID_TIMEOUT_INTERVAL = 56,
1545         WLAN_EID_RIC_DATA = 57,
1546         WLAN_EID_RIC_DESCRIPTOR = 75,
1547
1548         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1549         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1550         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1551
1552         WLAN_EID_VHT_CAPABILITY = 191,
1553         WLAN_EID_VHT_OPERATION = 192,
1554
1555         /* 802.11ad */
1556         WLAN_EID_NON_TX_BSSID_CAP =  83,
1557         WLAN_EID_WAKEUP_SCHEDULE = 143,
1558         WLAN_EID_EXT_SCHEDULE = 144,
1559         WLAN_EID_STA_AVAILABILITY = 145,
1560         WLAN_EID_DMG_TSPEC = 146,
1561         WLAN_EID_DMG_AT = 147,
1562         WLAN_EID_DMG_CAP = 148,
1563         WLAN_EID_DMG_OPERATION = 151,
1564         WLAN_EID_DMG_BSS_PARAM_CHANGE = 152,
1565         WLAN_EID_DMG_BEAM_REFINEMENT = 153,
1566         WLAN_EID_CHANNEL_MEASURE_FEEDBACK = 154,
1567         WLAN_EID_AWAKE_WINDOW = 157,
1568         WLAN_EID_MULTI_BAND = 158,
1569         WLAN_EID_ADDBA_EXT = 159,
1570         WLAN_EID_NEXT_PCP_LIST = 160,
1571         WLAN_EID_PCP_HANDOVER = 161,
1572         WLAN_EID_DMG_LINK_MARGIN = 162,
1573         WLAN_EID_SWITCHING_STREAM = 163,
1574         WLAN_EID_SESSION_TRANSITION = 164,
1575         WLAN_EID_DYN_TONE_PAIRING_REPORT = 165,
1576         WLAN_EID_CLUSTER_REPORT = 166,
1577         WLAN_EID_RELAY_CAP = 167,
1578         WLAN_EID_RELAY_XFER_PARAM_SET = 168,
1579         WLAN_EID_BEAM_LINK_MAINT = 169,
1580         WLAN_EID_MULTIPLE_MAC_ADDR = 170,
1581         WLAN_EID_U_PID = 171,
1582         WLAN_EID_DMG_LINK_ADAPT_ACK = 172,
1583         WLAN_EID_QUIET_PERIOD_REQ = 175,
1584         WLAN_EID_QUIET_PERIOD_RESP = 177,
1585         WLAN_EID_EPAC_POLICY = 182,
1586         WLAN_EID_CLISTER_TIME_OFF = 183,
1587         WLAN_EID_ANTENNA_SECTOR_ID_PATTERN = 190,
1588 };
1589
1590 /* Action category code */
1591 enum ieee80211_category {
1592         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1593         WLAN_CATEGORY_QOS = 1,
1594         WLAN_CATEGORY_DLS = 2,
1595         WLAN_CATEGORY_BACK = 3,
1596         WLAN_CATEGORY_PUBLIC = 4,
1597         WLAN_CATEGORY_HT = 7,
1598         WLAN_CATEGORY_SA_QUERY = 8,
1599         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1600         WLAN_CATEGORY_TDLS = 12,
1601         WLAN_CATEGORY_MESH_ACTION = 13,
1602         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1603         WLAN_CATEGORY_SELF_PROTECTED = 15,
1604         WLAN_CATEGORY_DMG = 16,
1605         WLAN_CATEGORY_WMM = 17,
1606         WLAN_CATEGORY_FST = 18,
1607         WLAN_CATEGORY_UNPROT_DMG = 20,
1608         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1609         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1610 };
1611
1612 /* SPECTRUM_MGMT action code */
1613 enum ieee80211_spectrum_mgmt_actioncode {
1614         WLAN_ACTION_SPCT_MSR_REQ = 0,
1615         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1616         WLAN_ACTION_SPCT_TPC_REQ = 2,
1617         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1618         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1619 };
1620
1621 /* HT action codes */
1622 enum ieee80211_ht_actioncode {
1623         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1624         WLAN_HT_ACTION_SMPS = 1,
1625         WLAN_HT_ACTION_PSMP = 2,
1626         WLAN_HT_ACTION_PCO_PHASE = 3,
1627         WLAN_HT_ACTION_CSI = 4,
1628         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1629         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1630         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1631 };
1632
1633 /* Self Protected Action codes */
1634 enum ieee80211_self_protected_actioncode {
1635         WLAN_SP_RESERVED = 0,
1636         WLAN_SP_MESH_PEERING_OPEN = 1,
1637         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1638         WLAN_SP_MESH_PEERING_CLOSE = 3,
1639         WLAN_SP_MGK_INFORM = 4,
1640         WLAN_SP_MGK_ACK = 5,
1641 };
1642
1643 /* Mesh action codes */
1644 enum ieee80211_mesh_actioncode {
1645         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1646         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1647         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1648         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1649         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1650         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1651         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1652         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1653         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1654         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1655         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1656 };
1657
1658 /* Security key length */
1659 enum ieee80211_key_len {
1660         WLAN_KEY_LEN_WEP40 = 5,
1661         WLAN_KEY_LEN_WEP104 = 13,
1662         WLAN_KEY_LEN_CCMP = 16,
1663         WLAN_KEY_LEN_TKIP = 32,
1664         WLAN_KEY_LEN_AES_CMAC = 16,
1665 };
1666
1667 /* Public action codes */
1668 enum ieee80211_pub_actioncode {
1669         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1670 };
1671
1672 /* TDLS action codes */
1673 enum ieee80211_tdls_actioncode {
1674         WLAN_TDLS_SETUP_REQUEST = 0,
1675         WLAN_TDLS_SETUP_RESPONSE = 1,
1676         WLAN_TDLS_SETUP_CONFIRM = 2,
1677         WLAN_TDLS_TEARDOWN = 3,
1678         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1679         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1680         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1681         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1682         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1683         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1684         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1685 };
1686
1687 /*
1688  * TDLS capabililites to be enabled in the 5th byte of the
1689  * @WLAN_EID_EXT_CAPABILITY information element
1690  */
1691 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1692 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1693
1694 /* TDLS specific payload type in the LLC/SNAP header */
1695 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1696
1697 /**
1698  * enum - mesh synchronization method identifier
1699  *
1700  * @IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET: the default synchronization method
1701  * @IEEE80211_SYNC_METHOD_VENDOR: a vendor specific synchronization method
1702  *      that will be specified in a vendor specific information element
1703  */
1704 enum {
1705         IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET = 1,
1706         IEEE80211_SYNC_METHOD_VENDOR = 255,
1707 };
1708
1709 /**
1710  * enum - mesh path selection protocol identifier
1711  *
1712  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1713  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1714  *      be specified in a vendor specific information element
1715  */
1716 enum {
1717         IEEE80211_PATH_PROTOCOL_HWMP = 1,
1718         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1719 };
1720
1721 /**
1722  * enum - mesh path selection metric identifier
1723  *
1724  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1725  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1726  *      specified in a vendor specific information element
1727  */
1728 enum {
1729         IEEE80211_PATH_METRIC_AIRTIME = 1,
1730         IEEE80211_PATH_METRIC_VENDOR = 255,
1731 };
1732
1733 /**
1734  * enum ieee80211_root_mode_identifier - root mesh STA mode identifier
1735  *
1736  * These attribute are used by dot11MeshHWMPRootMode to set root mesh STA mode
1737  *
1738  * @IEEE80211_ROOTMODE_NO_ROOT: the mesh STA is not a root mesh STA (default)
1739  * @IEEE80211_ROOTMODE_ROOT: the mesh STA is a root mesh STA if greater than
1740  *      this value
1741  * @IEEE80211_PROACTIVE_PREQ_NO_PREP: the mesh STA is a root mesh STA supports
1742  *      the proactive PREQ with proactive PREP subfield set to 0
1743  * @IEEE80211_PROACTIVE_PREQ_WITH_PREP: the mesh STA is a root mesh STA
1744  *      supports the proactive PREQ with proactive PREP subfield set to 1
1745  * @IEEE80211_PROACTIVE_RANN: the mesh STA is a root mesh STA supports
1746  *      the proactive RANN
1747  */
1748 enum ieee80211_root_mode_identifier {
1749         IEEE80211_ROOTMODE_NO_ROOT = 0,
1750         IEEE80211_ROOTMODE_ROOT = 1,
1751         IEEE80211_PROACTIVE_PREQ_NO_PREP = 2,
1752         IEEE80211_PROACTIVE_PREQ_WITH_PREP = 3,
1753         IEEE80211_PROACTIVE_RANN = 4,
1754 };
1755
1756 /*
1757  * IEEE 802.11-2007 7.3.2.9 Country information element
1758  *
1759  * Minimum length is 8 octets, ie len must be evenly
1760  * divisible by 2
1761  */
1762
1763 /* Although the spec says 8 I'm seeing 6 in practice */
1764 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1765
1766 /* The Country String field of the element shall be 3 octets in length */
1767 #define IEEE80211_COUNTRY_STRING_LEN    3
1768
1769 /*
1770  * For regulatory extension stuff see IEEE 802.11-2007
1771  * Annex I (page 1141) and Annex J (page 1147). Also
1772  * review 7.3.2.9.
1773  *
1774  * When dot11RegulatoryClassesRequired is true and the
1775  * first_channel/reg_extension_id is >= 201 then the IE
1776  * compromises of the 'ext' struct represented below:
1777  *
1778  *  - Regulatory extension ID - when generating IE this just needs
1779  *    to be monotonically increasing for each triplet passed in
1780  *    the IE
1781  *  - Regulatory class - index into set of rules
1782  *  - Coverage class - index into air propagation time (Table 7-27),
1783  *    in microseconds, you can compute the air propagation time from
1784  *    the index by multiplying by 3, so index 10 yields a propagation
1785  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1786  *    yet. A value of 0 inicates air propagation of <= 1 us.
1787  *
1788  *  See also Table I.2 for Emission limit sets and table
1789  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1790  *  a reg_class to an emission limit set and behavior limit set.
1791  */
1792 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1793
1794 /*
1795  *  Channels numbers in the IE must be monotonically increasing
1796  *  if dot11RegulatoryClassesRequired is not true.
1797  *
1798  *  If dot11RegulatoryClassesRequired is true consecutive
1799  *  subband triplets following a regulatory triplet shall
1800  *  have monotonically increasing first_channel number fields.
1801  *
1802  *  Channel numbers shall not overlap.
1803  *
1804  *  Note that max_power is signed.
1805  */
1806 struct ieee80211_country_ie_triplet {
1807         union {
1808                 struct {
1809                         u8 first_channel;
1810                         u8 num_channels;
1811                         s8 max_power;
1812                 } __attribute__ ((packed)) chans;
1813                 struct {
1814                         u8 reg_extension_id;
1815                         u8 reg_class;
1816                         u8 coverage_class;
1817                 } __attribute__ ((packed)) ext;
1818         };
1819 } __attribute__ ((packed));
1820
1821 enum ieee80211_timeout_interval_type {
1822         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1823         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1824         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1825 };
1826
1827 /* BACK action code */
1828 enum ieee80211_back_actioncode {
1829         WLAN_ACTION_ADDBA_REQ = 0,
1830         WLAN_ACTION_ADDBA_RESP = 1,
1831         WLAN_ACTION_DELBA = 2,
1832 };
1833
1834 /* BACK (block-ack) parties */
1835 enum ieee80211_back_parties {
1836         WLAN_BACK_RECIPIENT = 0,
1837         WLAN_BACK_INITIATOR = 1,
1838 };
1839
1840 /* SA Query action */
1841 enum ieee80211_sa_query_action {
1842         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1843         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1844 };
1845
1846
1847 /* cipher suite selectors */
1848 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1849 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1850 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1851 /* reserved:                            0x000FAC03 */
1852 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1853 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1854 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1855 #define WLAN_CIPHER_SUITE_GCMP          0x000FAC08
1856
1857 #define WLAN_CIPHER_SUITE_SMS4          0x00147201
1858
1859 /* AKM suite selectors */
1860 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1861 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1862 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1863 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1864
1865 #define WLAN_MAX_KEY_LEN                32
1866
1867 #define WLAN_PMKID_LEN                  16
1868
1869 #define WLAN_OUI_WFA                    0x506f9a
1870 #define WLAN_OUI_TYPE_WFA_P2P           9
1871 #define WLAN_OUI_MICROSOFT              0x0050f2
1872 #define WLAN_OUI_TYPE_MICROSOFT_WPA     1
1873 #define WLAN_OUI_TYPE_MICROSOFT_WMM     2
1874 #define WLAN_OUI_TYPE_MICROSOFT_WPS     4
1875
1876 /*
1877  * WMM/802.11e Tspec Element
1878  */
1879 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1880 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1881
1882 enum ieee80211_tspec_status_code {
1883         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1884         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1885 };
1886
1887 struct ieee80211_tspec_ie {
1888         u8 element_id;
1889         u8 len;
1890         u8 oui[3];
1891         u8 oui_type;
1892         u8 oui_subtype;
1893         u8 version;
1894         __le16 tsinfo;
1895         u8 tsinfo_resvd;
1896         __le16 nominal_msdu;
1897         __le16 max_msdu;
1898         __le32 min_service_int;
1899         __le32 max_service_int;
1900         __le32 inactivity_int;
1901         __le32 suspension_int;
1902         __le32 service_start_time;
1903         __le32 min_data_rate;
1904         __le32 mean_data_rate;
1905         __le32 peak_data_rate;
1906         __le32 max_burst_size;
1907         __le32 delay_bound;
1908         __le32 min_phy_rate;
1909         __le16 sba;
1910         __le16 medium_time;
1911 } __packed;
1912
1913 /**
1914  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1915  * @hdr: the frame
1916  *
1917  * The qos ctrl bytes come after the frame_control, duration, seq_num
1918  * and 3 or 4 addresses of length ETH_ALEN.
1919  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1920  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1921  */
1922 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1923 {
1924         if (ieee80211_has_a4(hdr->frame_control))
1925                 return (u8 *)hdr + 30;
1926         else
1927                 return (u8 *)hdr + 24;
1928 }
1929
1930 /**
1931  * ieee80211_get_SA - get pointer to SA
1932  * @hdr: the frame
1933  *
1934  * Given an 802.11 frame, this function returns the offset
1935  * to the source address (SA). It does not verify that the
1936  * header is long enough to contain the address, and the
1937  * header must be long enough to contain the frame control
1938  * field.
1939  */
1940 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1941 {
1942         if (ieee80211_has_a4(hdr->frame_control))
1943                 return hdr->addr4;
1944         if (ieee80211_has_fromds(hdr->frame_control))
1945                 return hdr->addr3;
1946         return hdr->addr2;
1947 }
1948
1949 /**
1950  * ieee80211_get_DA - get pointer to DA
1951  * @hdr: the frame
1952  *
1953  * Given an 802.11 frame, this function returns the offset
1954  * to the destination address (DA). It does not verify that
1955  * the header is long enough to contain the address, and the
1956  * header must be long enough to contain the frame control
1957  * field.
1958  */
1959 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1960 {
1961         if (ieee80211_has_tods(hdr->frame_control))
1962                 return hdr->addr3;
1963         else
1964                 return hdr->addr1;
1965 }
1966
1967 /**
1968  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1969  * @hdr: the frame (buffer must include at least the first octet of payload)
1970  */
1971 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1972 {
1973         if (ieee80211_is_disassoc(hdr->frame_control) ||
1974             ieee80211_is_deauth(hdr->frame_control))
1975                 return true;
1976
1977         if (ieee80211_is_action(hdr->frame_control)) {
1978                 u8 *category;
1979
1980                 /*
1981                  * Action frames, excluding Public Action frames, are Robust
1982                  * Management Frames. However, if we are looking at a Protected
1983                  * frame, skip the check since the data may be encrypted and
1984                  * the frame has already been found to be a Robust Management
1985                  * Frame (by the other end).
1986                  */
1987                 if (ieee80211_has_protected(hdr->frame_control))
1988                         return true;
1989                 category = ((u8 *) hdr) + 24;
1990                 return *category != WLAN_CATEGORY_PUBLIC &&
1991                         *category != WLAN_CATEGORY_HT &&
1992                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1993                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1994         }
1995
1996         return false;
1997 }
1998
1999 /**
2000  * ieee80211_is_public_action - check if frame is a public action frame
2001  * @hdr: the frame
2002  * @len: length of the frame
2003  */
2004 static inline bool ieee80211_is_public_action(struct ieee80211_hdr *hdr,
2005                                               size_t len)
2006 {
2007         struct ieee80211_mgmt *mgmt = (void *)hdr;
2008
2009         if (len < IEEE80211_MIN_ACTION_SIZE)
2010                 return false;
2011         if (!ieee80211_is_action(hdr->frame_control))
2012                 return false;
2013         return mgmt->u.action.category == WLAN_CATEGORY_PUBLIC;
2014 }
2015
2016 /**
2017  * ieee80211_dsss_chan_to_freq - get channel center frequency
2018  * @channel: the DSSS channel
2019  *
2020  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
2021  * Ref IEEE 802.11-2007 section 15.6
2022  */
2023 static inline int ieee80211_dsss_chan_to_freq(int channel)
2024 {
2025         if ((channel > 0) && (channel < 14))
2026                 return 2407 + (channel * 5);
2027         else if (channel == 14)
2028                 return 2484;
2029         else
2030                 return -1;
2031 }
2032
2033 /**
2034  * ieee80211_freq_to_dsss_chan - get channel
2035  * @freq: the frequency
2036  *
2037  * Convert frequency (MHz) to IEEE802.11 DSSS channel
2038  * Ref IEEE 802.11-2007 section 15.6
2039  *
2040  * This routine selects the channel with the closest center frequency.
2041  */
2042 static inline int ieee80211_freq_to_dsss_chan(int freq)
2043 {
2044         if ((freq >= 2410) && (freq < 2475))
2045                 return (freq - 2405) / 5;
2046         else if ((freq >= 2482) && (freq < 2487))
2047                 return 14;
2048         else
2049                 return -1;
2050 }
2051
2052 /**
2053  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
2054  * @tu: the TUs
2055  */
2056 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
2057 {
2058         return 1024 * tu;
2059 }
2060
2061 /**
2062  * ieee80211_check_tim - check if AID bit is set in TIM
2063  * @tim: the TIM IE
2064  * @tim_len: length of the TIM IE
2065  * @aid: the AID to look for
2066  */
2067 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
2068                                        u8 tim_len, u16 aid)
2069 {
2070         u8 mask;
2071         u8 indexn0, indexn1, indexn2;
2072
2073         if (unlikely(!tim || tim_len < sizeof(*tim)))
2074                 return false;
2075
2076         aid &= 0x3fff;
2077         indexn0 = aid / 8;
2078         mask  = 1 << (aid & 7);
2079
2080         indexn1 = tim->bitmap_ctrl & 0xfe;
2081         indexn2 = tim_len + indexn1 - 4;
2082
2083         if (indexn0 < indexn1 || indexn0 > indexn2)
2084                 return false;
2085
2086         indexn0 -= indexn1;
2087
2088         return !!(tim->virtual_map[indexn0] & mask);
2089 }
2090
2091 #endif /* __LINUX_IEEE80211_H */