include/linux/ieee80211.h

   1 /*
   2  * IEEE 802.11 defines
   3  *
   4  * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
   5  * <jkmaline@cc.hut.fi>
   6  * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
   7  * Copyright (c) 2005, Devicescape Software, Inc.
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #ifndef LINUX_IEEE80211_H
  16 #define LINUX_IEEE80211_H
  17
  18 #include <linux/types.h>
  19 #include <asm/byteorder.h>
  20
  21 /*
  22  * DS bit usage
  23  *
  24  * TA = transmitter address
  25  * RA = receiver address
  26  * DA = destination address
  27  * SA = source address
  28  *
  29  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
  30  * -----------------------------------------------------------------
  31  *  0       0       DA      SA      BSSID   -       IBSS/DLS
  32  *  0       1       DA      BSSID   SA      -       AP -> STA
  33  *  1       0       BSSID   SA      DA      -       AP <- STA
  34  *  1       1       RA      TA      DA      SA      unspecified (WDS)
  35  */
  36
  37 #define FCS_LEN 4
  38
  39 #define IEEE80211_FCTL_VERS             0x0003
  40 #define IEEE80211_FCTL_FTYPE            0x000c
  41 #define IEEE80211_FCTL_STYPE            0x00f0
  42 #define IEEE80211_FCTL_TODS             0x0100
  43 #define IEEE80211_FCTL_FROMDS           0x0200
  44 #define IEEE80211_FCTL_MOREFRAGS        0x0400
  45 #define IEEE80211_FCTL_RETRY            0x0800
  46 #define IEEE80211_FCTL_PM               0x1000
  47 #define IEEE80211_FCTL_MOREDATA         0x2000
  48 #define IEEE80211_FCTL_PROTECTED        0x4000
  49 #define IEEE80211_FCTL_ORDER            0x8000
  50
  51 #define IEEE80211_SCTL_FRAG             0x000F
  52 #define IEEE80211_SCTL_SEQ              0xFFF0
  53
  54 #define IEEE80211_FTYPE_MGMT            0x0000
  55 #define IEEE80211_FTYPE_CTL             0x0004
  56 #define IEEE80211_FTYPE_DATA            0x0008
  57
  58 /* management */
  59 #define IEEE80211_STYPE_ASSOC_REQ       0x0000
  60 #define IEEE80211_STYPE_ASSOC_RESP      0x0010
  61 #define IEEE80211_STYPE_REASSOC_REQ     0x0020
  62 #define IEEE80211_STYPE_REASSOC_RESP    0x0030
  63 #define IEEE80211_STYPE_PROBE_REQ       0x0040
  64 #define IEEE80211_STYPE_PROBE_RESP      0x0050
  65 #define IEEE80211_STYPE_BEACON          0x0080
  66 #define IEEE80211_STYPE_ATIM            0x0090
  67 #define IEEE80211_STYPE_DISASSOC        0x00A0
  68 #define IEEE80211_STYPE_AUTH            0x00B0
  69 #define IEEE80211_STYPE_DEAUTH          0x00C0
  70 #define IEEE80211_STYPE_ACTION          0x00D0
  71
  72 /* control */
  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
 101 /* miscellaneous IEEE 802.11 constants */
 102 #define IEEE80211_MAX_FRAG_THRESHOLD    2352
 103 #define IEEE80211_MAX_RTS_THRESHOLD     2353
 104 #define IEEE80211_MAX_AID               2007
 105 #define IEEE80211_MAX_TIM_LEN           251
 106 /* Maximum size for the MA-UNITDATA primitive, 802.11 standard section
 107    6.2.1.1.2.
 108
 109    802.11e clarifies the figure in section 7.1.2. The frame body is
 110    up to 2304 octets long (maximum MSDU size) plus any crypt overhead. */
 111 #define IEEE80211_MAX_DATA_LEN          2304
 112 /* 30 byte 4 addr hdr, 2 byte QoS, 2304 byte MSDU, 12 byte crypt, 4 byte FCS */
 113 #define IEEE80211_MAX_FRAME_LEN         2352
 114
 115 #define IEEE80211_MAX_SSID_LEN          32
 116
 117 #define IEEE80211_MAX_MESH_ID_LEN       32
 118
 119 #define IEEE80211_QOS_CTL_LEN           2
 120 /* 1d tag mask */
 121 #define IEEE80211_QOS_CTL_TAG1D_MASK            0x0007
 122 /* TID mask */
 123 #define IEEE80211_QOS_CTL_TID_MASK              0x000f
 124 /* EOSP */
 125 #define IEEE80211_QOS_CTL_EOSP                  0x0010
 126 /* ACK policy */
 127 #define IEEE80211_QOS_CTL_ACK_POLICY_NORMAL     0x0000
 128 #define IEEE80211_QOS_CTL_ACK_POLICY_NOACK      0x0020
 129 #define IEEE80211_QOS_CTL_ACK_POLICY_NO_EXPL    0x0040
 130 #define IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK   0x0060
 131 /* A-MSDU 802.11n */
 132 #define IEEE80211_QOS_CTL_A_MSDU_PRESENT        0x0080
 133 /* Mesh Control 802.11s */
 134 #define IEEE80211_QOS_CTL_MESH_CONTROL_PRESENT  0x0100
 135
 136 /* U-APSD queue for WMM IEs sent by AP */
 137 #define IEEE80211_WMM_IE_AP_QOSINFO_UAPSD       (1<<7)
 138 #define IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK  0x0f
 139
 140 /* U-APSD queues for WMM IEs sent by STA */
 141 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VO      (1<<0)
 142 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_VI      (1<<1)
 143 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BK      (1<<2)
 144 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_BE      (1<<3)
 145 #define IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK    0x0f
 146
 147 /* U-APSD max SP length for WMM IEs sent by STA */
 148 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_ALL     0x00
 149 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_2       0x01
 150 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_4       0x02
 151 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_6       0x03
 152 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK    0x03
 153 #define IEEE80211_WMM_IE_STA_QOSINFO_SP_SHIFT   5
 154
 155 #define IEEE80211_HT_CTL_LEN            4
 156
 157 struct ieee80211_hdr {
 158         __le16 frame_control;
 159         __le16 duration_id;
 160         u8 addr1[6];
 161         u8 addr2[6];
 162         u8 addr3[6];
 163         __le16 seq_ctrl;
 164         u8 addr4[6];
 165 } __attribute__ ((packed));
 166
 167 struct ieee80211_hdr_3addr {
 168         __le16 frame_control;
 169         __le16 duration_id;
 170         u8 addr1[6];
 171         u8 addr2[6];
 172         u8 addr3[6];
 173         __le16 seq_ctrl;
 174 } __attribute__ ((packed));
 175
 176 struct ieee80211_qos_hdr {
 177         __le16 frame_control;
 178         __le16 duration_id;
 179         u8 addr1[6];
 180         u8 addr2[6];
 181         u8 addr3[6];
 182         __le16 seq_ctrl;
 183         __le16 qos_ctrl;
 184 } __attribute__ ((packed));
 185
 186 /**
 187  * ieee80211_has_tods - check if IEEE80211_FCTL_TODS is set
 188  * @fc: frame control bytes in little-endian byteorder
 189  */
 190 static inline int ieee80211_has_tods(__le16 fc)
 191 {
 192         return (fc & cpu_to_le16(IEEE80211_FCTL_TODS)) != 0;
 193 }
 194
 195 /**
 196  * ieee80211_has_fromds - check if IEEE80211_FCTL_FROMDS is set
 197  * @fc: frame control bytes in little-endian byteorder
 198  */
 199 static inline int ieee80211_has_fromds(__le16 fc)
 200 {
 201         return (fc & cpu_to_le16(IEEE80211_FCTL_FROMDS)) != 0;
 202 }
 203
 204 /**
 205  * ieee80211_has_a4 - check if IEEE80211_FCTL_TODS and IEEE80211_FCTL_FROMDS are set
 206  * @fc: frame control bytes in little-endian byteorder
 207  */
 208 static inline int ieee80211_has_a4(__le16 fc)
 209 {
 210         __le16 tmp = cpu_to_le16(IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS);
 211         return (fc & tmp) == tmp;
 212 }
 213
 214 /**
 215  * ieee80211_has_morefrags - check if IEEE80211_FCTL_MOREFRAGS is set
 216  * @fc: frame control bytes in little-endian byteorder
 217  */
 218 static inline int ieee80211_has_morefrags(__le16 fc)
 219 {
 220         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) != 0;
 221 }
 222
 223 /**
 224  * ieee80211_has_retry - check if IEEE80211_FCTL_RETRY is set
 225  * @fc: frame control bytes in little-endian byteorder
 226  */
 227 static inline int ieee80211_has_retry(__le16 fc)
 228 {
 229         return (fc & cpu_to_le16(IEEE80211_FCTL_RETRY)) != 0;
 230 }
 231
 232 /**
 233  * ieee80211_has_pm - check if IEEE80211_FCTL_PM is set
 234  * @fc: frame control bytes in little-endian byteorder
 235  */
 236 static inline int ieee80211_has_pm(__le16 fc)
 237 {
 238         return (fc & cpu_to_le16(IEEE80211_FCTL_PM)) != 0;
 239 }
 240
 241 /**
 242  * ieee80211_has_moredata - check if IEEE80211_FCTL_MOREDATA is set
 243  * @fc: frame control bytes in little-endian byteorder
 244  */
 245 static inline int ieee80211_has_moredata(__le16 fc)
 246 {
 247         return (fc & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) != 0;
 248 }
 249
 250 /**
 251  * ieee80211_has_protected - check if IEEE80211_FCTL_PROTECTED is set
 252  * @fc: frame control bytes in little-endian byteorder
 253  */
 254 static inline int ieee80211_has_protected(__le16 fc)
 255 {
 256         return (fc & cpu_to_le16(IEEE80211_FCTL_PROTECTED)) != 0;
 257 }
 258
 259 /**
 260  * ieee80211_has_order - check if IEEE80211_FCTL_ORDER is set
 261  * @fc: frame control bytes in little-endian byteorder
 262  */
 263 static inline int ieee80211_has_order(__le16 fc)
 264 {
 265         return (fc & cpu_to_le16(IEEE80211_FCTL_ORDER)) != 0;
 266 }
 267
 268 /**
 269  * ieee80211_is_mgmt - check if type is IEEE80211_FTYPE_MGMT
 270  * @fc: frame control bytes in little-endian byteorder
 271  */
 272 static inline int ieee80211_is_mgmt(__le16 fc)
 273 {
 274         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 275                cpu_to_le16(IEEE80211_FTYPE_MGMT);
 276 }
 277
 278 /**
 279  * ieee80211_is_ctl - check if type is IEEE80211_FTYPE_CTL
 280  * @fc: frame control bytes in little-endian byteorder
 281  */
 282 static inline int ieee80211_is_ctl(__le16 fc)
 283 {
 284         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 285                cpu_to_le16(IEEE80211_FTYPE_CTL);
 286 }
 287
 288 /**
 289  * ieee80211_is_data - check if type is IEEE80211_FTYPE_DATA
 290  * @fc: frame control bytes in little-endian byteorder
 291  */
 292 static inline int ieee80211_is_data(__le16 fc)
 293 {
 294         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE)) ==
 295                cpu_to_le16(IEEE80211_FTYPE_DATA);
 296 }
 297
 298 /**
 299  * ieee80211_is_data_qos - check if type is IEEE80211_FTYPE_DATA and IEEE80211_STYPE_QOS_DATA is set
 300  * @fc: frame control bytes in little-endian byteorder
 301  */
 302 static inline int ieee80211_is_data_qos(__le16 fc)
 303 {
 304         /*
 305          * mask with QOS_DATA rather than IEEE80211_FCTL_STYPE as we just need
 306          * to check the one bit
 307          */
 308         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_STYPE_QOS_DATA)) ==
 309                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_DATA);
 310 }
 311
 312 /**
 313  * ieee80211_is_data_present - check if type is IEEE80211_FTYPE_DATA and has data
 314  * @fc: frame control bytes in little-endian byteorder
 315  */
 316 static inline int ieee80211_is_data_present(__le16 fc)
 317 {
 318         /*
 319          * mask with 0x40 and test that that bit is clear to only return true
 320          * for the data-containing substypes.
 321          */
 322         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | 0x40)) ==
 323                cpu_to_le16(IEEE80211_FTYPE_DATA);
 324 }
 325
 326 /**
 327  * ieee80211_is_assoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_REQ
 328  * @fc: frame control bytes in little-endian byteorder
 329  */
 330 static inline int ieee80211_is_assoc_req(__le16 fc)
 331 {
 332         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 333                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_REQ);
 334 }
 335
 336 /**
 337  * ieee80211_is_assoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ASSOC_RESP
 338  * @fc: frame control bytes in little-endian byteorder
 339  */
 340 static inline int ieee80211_is_assoc_resp(__le16 fc)
 341 {
 342         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 343                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ASSOC_RESP);
 344 }
 345
 346 /**
 347  * ieee80211_is_reassoc_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_REQ
 348  * @fc: frame control bytes in little-endian byteorder
 349  */
 350 static inline int ieee80211_is_reassoc_req(__le16 fc)
 351 {
 352         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 353                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_REQ);
 354 }
 355
 356 /**
 357  * ieee80211_is_reassoc_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_REASSOC_RESP
 358  * @fc: frame control bytes in little-endian byteorder
 359  */
 360 static inline int ieee80211_is_reassoc_resp(__le16 fc)
 361 {
 362         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 363                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_REASSOC_RESP);
 364 }
 365
 366 /**
 367  * ieee80211_is_probe_req - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_REQ
 368  * @fc: frame control bytes in little-endian byteorder
 369  */
 370 static inline int ieee80211_is_probe_req(__le16 fc)
 371 {
 372         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 373                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ);
 374 }
 375
 376 /**
 377  * ieee80211_is_probe_resp - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_PROBE_RESP
 378  * @fc: frame control bytes in little-endian byteorder
 379  */
 380 static inline int ieee80211_is_probe_resp(__le16 fc)
 381 {
 382         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 383                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_RESP);
 384 }
 385
 386 /**
 387  * ieee80211_is_beacon - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_BEACON
 388  * @fc: frame control bytes in little-endian byteorder
 389  */
 390 static inline int ieee80211_is_beacon(__le16 fc)
 391 {
 392         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 393                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_BEACON);
 394 }
 395
 396 /**
 397  * ieee80211_is_atim - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ATIM
 398  * @fc: frame control bytes in little-endian byteorder
 399  */
 400 static inline int ieee80211_is_atim(__le16 fc)
 401 {
 402         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 403                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ATIM);
 404 }
 405
 406 /**
 407  * ieee80211_is_disassoc - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DISASSOC
 408  * @fc: frame control bytes in little-endian byteorder
 409  */
 410 static inline int ieee80211_is_disassoc(__le16 fc)
 411 {
 412         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 413                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DISASSOC);
 414 }
 415
 416 /**
 417  * ieee80211_is_auth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_AUTH
 418  * @fc: frame control bytes in little-endian byteorder
 419  */
 420 static inline int ieee80211_is_auth(__le16 fc)
 421 {
 422         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 423                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH);
 424 }
 425
 426 /**
 427  * ieee80211_is_deauth - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_DEAUTH
 428  * @fc: frame control bytes in little-endian byteorder
 429  */
 430 static inline int ieee80211_is_deauth(__le16 fc)
 431 {
 432         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 433                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_DEAUTH);
 434 }
 435
 436 /**
 437  * ieee80211_is_action - check if IEEE80211_FTYPE_MGMT && IEEE80211_STYPE_ACTION
 438  * @fc: frame control bytes in little-endian byteorder
 439  */
 440 static inline int ieee80211_is_action(__le16 fc)
 441 {
 442         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 443                cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION);
 444 }
 445
 446 /**
 447  * ieee80211_is_back_req - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK_REQ
 448  * @fc: frame control bytes in little-endian byteorder
 449  */
 450 static inline int ieee80211_is_back_req(__le16 fc)
 451 {
 452         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 453                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK_REQ);
 454 }
 455
 456 /**
 457  * ieee80211_is_back - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_BACK
 458  * @fc: frame control bytes in little-endian byteorder
 459  */
 460 static inline int ieee80211_is_back(__le16 fc)
 461 {
 462         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 463                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_BACK);
 464 }
 465
 466 /**
 467  * ieee80211_is_pspoll - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_PSPOLL
 468  * @fc: frame control bytes in little-endian byteorder
 469  */
 470 static inline int ieee80211_is_pspoll(__le16 fc)
 471 {
 472         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 473                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_PSPOLL);
 474 }
 475
 476 /**
 477  * ieee80211_is_rts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_RTS
 478  * @fc: frame control bytes in little-endian byteorder
 479  */
 480 static inline int ieee80211_is_rts(__le16 fc)
 481 {
 482         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 483                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS);
 484 }
 485
 486 /**
 487  * ieee80211_is_cts - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CTS
 488  * @fc: frame control bytes in little-endian byteorder
 489  */
 490 static inline int ieee80211_is_cts(__le16 fc)
 491 {
 492         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 493                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS);
 494 }
 495
 496 /**
 497  * ieee80211_is_ack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_ACK
 498  * @fc: frame control bytes in little-endian byteorder
 499  */
 500 static inline int ieee80211_is_ack(__le16 fc)
 501 {
 502         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 503                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_ACK);
 504 }
 505
 506 /**
 507  * ieee80211_is_cfend - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFEND
 508  * @fc: frame control bytes in little-endian byteorder
 509  */
 510 static inline int ieee80211_is_cfend(__le16 fc)
 511 {
 512         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 513                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFEND);
 514 }
 515
 516 /**
 517  * ieee80211_is_cfendack - check if IEEE80211_FTYPE_CTL && IEEE80211_STYPE_CFENDACK
 518  * @fc: frame control bytes in little-endian byteorder
 519  */
 520 static inline int ieee80211_is_cfendack(__le16 fc)
 521 {
 522         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 523                cpu_to_le16(IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CFENDACK);
 524 }
 525
 526 /**
 527  * ieee80211_is_nullfunc - check if frame is a regular (non-QoS) nullfunc frame
 528  * @fc: frame control bytes in little-endian byteorder
 529  */
 530 static inline int ieee80211_is_nullfunc(__le16 fc)
 531 {
 532         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 533                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC);
 534 }
 535
 536 /**
 537  * ieee80211_is_qos_nullfunc - check if frame is a QoS nullfunc frame
 538  * @fc: frame control bytes in little-endian byteorder
 539  */
 540 static inline int ieee80211_is_qos_nullfunc(__le16 fc)
 541 {
 542         return (fc & cpu_to_le16(IEEE80211_FCTL_FTYPE | IEEE80211_FCTL_STYPE)) ==
 543                cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_QOS_NULLFUNC);
 544 }
 545
 546 struct ieee80211s_hdr {
 547         u8 flags;
 548         u8 ttl;
 549         __le32 seqnum;
 550         u8 eaddr1[6];
 551         u8 eaddr2[6];
 552 } __attribute__ ((packed));
 553
 554 /* Mesh flags */
 555 #define MESH_FLAGS_AE_A4        0x1
 556 #define MESH_FLAGS_AE_A5_A6     0x2
 557 #define MESH_FLAGS_AE           0x3
 558 #define MESH_FLAGS_PS_DEEP      0x4
 559
 560 /**
 561  * struct ieee80211_quiet_ie
 562  *
 563  * This structure refers to "Quiet information element"
 564  */
 565 struct ieee80211_quiet_ie {
 566         u8 count;
 567         u8 period;
 568         __le16 duration;
 569         __le16 offset;
 570 } __attribute__ ((packed));
 571
 572 /**
 573  * struct ieee80211_msrment_ie
 574  *
 575  * This structure refers to "Measurement Request/Report information element"
 576  */
 577 struct ieee80211_msrment_ie {
 578         u8 token;
 579         u8 mode;
 580         u8 type;
 581         u8 request[0];
 582 } __attribute__ ((packed));
 583
 584 /**
 585  * struct ieee80211_channel_sw_ie
 586  *
 587  * This structure refers to "Channel Switch Announcement information element"
 588  */
 589 struct ieee80211_channel_sw_ie {
 590         u8 mode;
 591         u8 new_ch_num;
 592         u8 count;
 593 } __attribute__ ((packed));
 594
 595 /**
 596  * struct ieee80211_tim
 597  *
 598  * This structure refers to "Traffic Indication Map information element"
 599  */
 600 struct ieee80211_tim_ie {
 601         u8 dtim_count;
 602         u8 dtim_period;
 603         u8 bitmap_ctrl;
 604         /* variable size: 1 - 251 bytes */
 605         u8 virtual_map[1];
 606 } __attribute__ ((packed));
 607
 608 /**
 609  * struct ieee80211_meshconf_ie
 610  *
 611  * This structure refers to "Mesh Configuration information element"
 612  */
 613 struct ieee80211_meshconf_ie {
 614         u8 meshconf_psel;
 615         u8 meshconf_pmetric;
 616         u8 meshconf_congest;
 617         u8 meshconf_synch;
 618         u8 meshconf_auth;
 619         u8 meshconf_form;
 620         u8 meshconf_cap;
 621 } __attribute__ ((packed));
 622
 623 /**
 624  * struct ieee80211_rann_ie
 625  *
 626  * This structure refers to "Root Announcement information element"
 627  */
 628 struct ieee80211_rann_ie {
 629         u8 rann_flags;
 630         u8 rann_hopcount;
 631         u8 rann_ttl;
 632         u8 rann_addr[6];
 633         u32 rann_seq;
 634         u32 rann_interval;
 635         u32 rann_metric;
 636 } __attribute__ ((packed));
 637
 638 enum ieee80211_rann_flags {
 639         RANN_FLAG_IS_GATE = 1 << 0,
 640 };
 641
 642 #define WLAN_SA_QUERY_TR_ID_LEN 2
 643
 644 struct ieee80211_mgmt {
 645         __le16 frame_control;
 646         __le16 duration;
 647         u8 da[6];
 648         u8 sa[6];
 649         u8 bssid[6];
 650         __le16 seq_ctrl;
 651         union {
 652                 struct {
 653                         __le16 auth_alg;
 654                         __le16 auth_transaction;
 655                         __le16 status_code;
 656                         /* possibly followed by Challenge text */
 657                         u8 variable[0];
 658                 } __attribute__ ((packed)) auth;
 659                 struct {
 660                         __le16 reason_code;
 661                 } __attribute__ ((packed)) deauth;
 662                 struct {
 663                         __le16 capab_info;
 664                         __le16 listen_interval;
 665                         /* followed by SSID and Supported rates */
 666                         u8 variable[0];
 667                 } __attribute__ ((packed)) assoc_req;
 668                 struct {
 669                         __le16 capab_info;
 670                         __le16 status_code;
 671                         __le16 aid;
 672                         /* followed by Supported rates */
 673                         u8 variable[0];
 674                 } __attribute__ ((packed)) assoc_resp, reassoc_resp;
 675                 struct {
 676                         __le16 capab_info;
 677                         __le16 listen_interval;
 678                         u8 current_ap[6];
 679                         /* followed by SSID and Supported rates */
 680                         u8 variable[0];
 681                 } __attribute__ ((packed)) reassoc_req;
 682                 struct {
 683                         __le16 reason_code;
 684                 } __attribute__ ((packed)) disassoc;
 685                 struct {
 686                         __le64 timestamp;
 687                         __le16 beacon_int;
 688                         __le16 capab_info;
 689                         /* followed by some of SSID, Supported rates,
 690                          * FH Params, DS Params, CF Params, IBSS Params, TIM */
 691                         u8 variable[0];
 692                 } __attribute__ ((packed)) beacon;
 693                 struct {
 694                         /* only variable items: SSID, Supported rates */
 695                         u8 variable[0];
 696                 } __attribute__ ((packed)) probe_req;
 697                 struct {
 698                         __le64 timestamp;
 699                         __le16 beacon_int;
 700                         __le16 capab_info;
 701                         /* followed by some of SSID, Supported rates,
 702                          * FH Params, DS Params, CF Params, IBSS Params */
 703                         u8 variable[0];
 704                 } __attribute__ ((packed)) probe_resp;
 705                 struct {
 706                         u8 category;
 707                         union {
 708                                 struct {
 709                                         u8 action_code;
 710                                         u8 dialog_token;
 711                                         u8 status_code;
 712                                         u8 variable[0];
 713                                 } __attribute__ ((packed)) wme_action;
 714                                 struct{
 715                                         u8 action_code;
 716                                         u8 element_id;
 717                                         u8 length;
 718                                         struct ieee80211_channel_sw_ie sw_elem;
 719                                 } __attribute__((packed)) chan_switch;
 720                                 struct{
 721                                         u8 action_code;
 722                                         u8 dialog_token;
 723                                         u8 element_id;
 724                                         u8 length;
 725                                         struct ieee80211_msrment_ie msr_elem;
 726                                 } __attribute__((packed)) measurement;
 727                                 struct{
 728                                         u8 action_code;
 729                                         u8 dialog_token;
 730                                         __le16 capab;
 731                                         __le16 timeout;
 732                                         __le16 start_seq_num;
 733                                 } __attribute__((packed)) addba_req;
 734                                 struct{
 735                                         u8 action_code;
 736                                         u8 dialog_token;
 737                                         __le16 status;
 738                                         __le16 capab;
 739                                         __le16 timeout;
 740                                 } __attribute__((packed)) addba_resp;
 741                                 struct{
 742                                         u8 action_code;
 743                                         __le16 params;
 744                                         __le16 reason_code;
 745                                 } __attribute__((packed)) delba;
 746                                 struct {
 747                                         u8 action_code;
 748                                         u8 variable[0];
 749                                 } __attribute__((packed)) self_prot;
 750                                 struct{
 751                                         u8 action_code;
 752                                         u8 variable[0];
 753                                 } __attribute__((packed)) mesh_action;
 754                                 struct {
 755                                         u8 action;
 756                                         u8 trans_id[WLAN_SA_QUERY_TR_ID_LEN];
 757                                 } __attribute__ ((packed)) sa_query;
 758                                 struct {
 759                                         u8 action;
 760                                         u8 smps_control;
 761                                 } __attribute__ ((packed)) ht_smps;
 762                         } u;
 763                 } __attribute__ ((packed)) action;
 764         } u;
 765 } __attribute__ ((packed));
 766
 767 /* mgmt header + 1 byte category code */
 768 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 769
 770
 771 /* Management MIC information element (IEEE 802.11w) */
 772 struct ieee80211_mmie {
 773         u8 element_id;
 774         u8 length;
 775         __le16 key_id;
 776         u8 sequence_number[6];
 777         u8 mic[8];
 778 } __attribute__ ((packed));
 779
 780 /* Control frames */
 781 struct ieee80211_rts {
 782         __le16 frame_control;
 783         __le16 duration;
 784         u8 ra[6];
 785         u8 ta[6];
 786 } __attribute__ ((packed));
 787
 788 struct ieee80211_cts {
 789         __le16 frame_control;
 790         __le16 duration;
 791         u8 ra[6];
 792 } __attribute__ ((packed));
 793
 794 struct ieee80211_pspoll {
 795         __le16 frame_control;
 796         __le16 aid;
 797         u8 bssid[6];
 798         u8 ta[6];
 799 } __attribute__ ((packed));
 800
 801 /**
 802  * struct ieee80211_bar - HT Block Ack Request
 803  *
 804  * This structure refers to "HT BlockAckReq" as
 805  * described in 802.11n draft section 7.2.1.7.1
 806  */
 807 struct ieee80211_bar {
 808         __le16 frame_control;
 809         __le16 duration;
 810         __u8 ra[6];
 811         __u8 ta[6];
 812         __le16 control;
 813         __le16 start_seq_num;
 814 } __attribute__((packed));
 815
 816 /* 802.11 BAR control masks */
 817 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 818 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 819 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 820 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 821 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 822
 823 #define IEEE80211_HT_MCS_MASK_LEN               10
 824
 825 /**
 826  * struct ieee80211_mcs_info - MCS information
 827  * @rx_mask: RX mask
 828  * @rx_highest: highest supported RX rate. If set represents
 829  *      the highest supported RX data rate in units of 1 Mbps.
 830  *      If this field is 0 this value should not be used to
 831  *      consider the highest RX data rate supported.
 832  * @tx_params: TX parameters
 833  */
 834 struct ieee80211_mcs_info {
 835         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 836         __le16 rx_highest;
 837         u8 tx_params;
 838         u8 reserved[3];
 839 } __attribute__((packed));
 840
 841 /* 802.11n HT capability MSC set */
 842 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 843 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 844 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 845 /* value 0 == 1 stream etc */
 846 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 847 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 848 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 849 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 850
 851 /*
 852  * 802.11n D5.0 20.3.5 / 20.6 says:
 853  * - indices 0 to 7 and 32 are single spatial stream
 854  * - 8 to 31 are multiple spatial streams using equal modulation
 855  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 856  * - remainder are multiple spatial streams using unequal modulation
 857  */
 858 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 859 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 860         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 861
 862 /**
 863  * struct ieee80211_ht_cap - HT capabilities
 864  *
 865  * This structure is the "HT capabilities element" as
 866  * described in 802.11n D5.0 7.3.2.57
 867  */
 868 struct ieee80211_ht_cap {
 869         __le16 cap_info;
 870         u8 ampdu_params_info;
 871
 872         /* 16 bytes MCS information */
 873         struct ieee80211_mcs_info mcs;
 874
 875         __le16 extended_ht_cap_info;
 876         __le32 tx_BF_cap_info;
 877         u8 antenna_selection_info;
 878 } __attribute__ ((packed));
 879
 880 /* 802.11n HT capabilities masks (for cap_info) */
 881 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 882 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 883 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 884 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 885 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 886 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 887 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 888 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 889 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 890 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 891 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 892 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 893 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 894 #define IEEE80211_HT_CAP_RESERVED               0x2000
 895 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 896 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 897
 898 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 899 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 900 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 901 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 902 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 903 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 904 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 905 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 906
 907 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 908 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 909 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 910 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 911
 912 /*
 913  * Maximum length of AMPDU that the STA can receive.
 914  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 915  */
 916 enum ieee80211_max_ampdu_length_exp {
 917         IEEE80211_HT_MAX_AMPDU_8K = 0,
 918         IEEE80211_HT_MAX_AMPDU_16K = 1,
 919         IEEE80211_HT_MAX_AMPDU_32K = 2,
 920         IEEE80211_HT_MAX_AMPDU_64K = 3
 921 };
 922
 923 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 924
 925 /* Minimum MPDU start spacing */
 926 enum ieee80211_min_mpdu_spacing {
 927         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 928         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 929         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 930         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 931         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 932         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 933         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 934         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 935 };
 936
 937 /**
 938  * struct ieee80211_ht_info - HT information
 939  *
 940  * This structure is the "HT information element" as
 941  * described in 802.11n D5.0 7.3.2.58
 942  */
 943 struct ieee80211_ht_info {
 944         u8 control_chan;
 945         u8 ht_param;
 946         __le16 operation_mode;
 947         __le16 stbc_param;
 948         u8 basic_set[16];
 949 } __attribute__ ((packed));
 950
 951 /* for ht_param */
 952 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
 953 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
 954 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
 955 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
 956 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
 957 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
 958 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
 959 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
 960
 961 /* for operation_mode */
 962 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
 963 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
 964 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
 965 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
 966 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
 967 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
 968 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
 969
 970 /* for stbc_param */
 971 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
 972 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
 973 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
 974 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
 975 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
 976 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
 977
 978
 979 /* block-ack parameters */
 980 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
 981 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
 982 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
 983 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
 984 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
 985
 986 /*
 987  * A-PMDU buffer sizes
 988  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
 989  */
 990 #define IEEE80211_MIN_AMPDU_BUF 0x8
 991 #define IEEE80211_MAX_AMPDU_BUF 0x40
 992
 993
 994 /* Spatial Multiplexing Power Save Modes (for capability) */
 995 #define WLAN_HT_CAP_SM_PS_STATIC        0
 996 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
 997 #define WLAN_HT_CAP_SM_PS_INVALID       2
 998 #define WLAN_HT_CAP_SM_PS_DISABLED      3
 999
1000 /* for SM power control field lower two bits */
1001 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1002 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1003 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1004
1005 /* Authentication algorithms */
1006 #define WLAN_AUTH_OPEN 0
1007 #define WLAN_AUTH_SHARED_KEY 1
1008 #define WLAN_AUTH_FT 2
1009 #define WLAN_AUTH_SAE 3
1010 #define WLAN_AUTH_LEAP 128
1011
1012 #define WLAN_AUTH_CHALLENGE_LEN 128
1013
1014 #define WLAN_CAPABILITY_ESS             (1<<0)
1015 #define WLAN_CAPABILITY_IBSS            (1<<1)
1016
1017 /*
1018  * A mesh STA sets the ESS and IBSS capability bits to zero.
1019  * however, this holds true for p2p probe responses (in the p2p_find
1020  * phase) as well.
1021  */
1022 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1023         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1024
1025 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1026 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1027 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1028 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1029 #define WLAN_CAPABILITY_PBCC            (1<<6)
1030 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1031
1032 /* 802.11h */
1033 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1034 #define WLAN_CAPABILITY_QOS             (1<<9)
1035 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1036 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1037 /* measurement */
1038 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1039 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1040 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1041
1042 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1043 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1044 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1045
1046
1047 /* 802.11g ERP information element */
1048 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1049 #define WLAN_ERP_USE_PROTECTION (1<<1)
1050 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1051
1052 /* WLAN_ERP_BARKER_PREAMBLE values */
1053 enum {
1054         WLAN_ERP_PREAMBLE_SHORT = 0,
1055         WLAN_ERP_PREAMBLE_LONG = 1,
1056 };
1057
1058 /* Status codes */
1059 enum ieee80211_statuscode {
1060         WLAN_STATUS_SUCCESS = 0,
1061         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1062         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1063         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1064         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1065         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1066         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1067         WLAN_STATUS_CHALLENGE_FAIL = 15,
1068         WLAN_STATUS_AUTH_TIMEOUT = 16,
1069         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1070         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1071         /* 802.11b */
1072         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1073         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1074         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1075         /* 802.11h */
1076         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1077         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1078         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1079         /* 802.11g */
1080         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1081         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1082         /* 802.11w */
1083         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1084         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1085         /* 802.11i */
1086         WLAN_STATUS_INVALID_IE = 40,
1087         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1088         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1089         WLAN_STATUS_INVALID_AKMP = 43,
1090         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1091         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1092         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1093         /* 802.11e */
1094         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1095         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1096         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1097         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1098         WLAN_STATUS_REQUEST_DECLINED = 37,
1099         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1100         WLAN_STATUS_CHANGE_TSPEC = 39,
1101         WLAN_STATUS_WAIT_TS_DELAY = 47,
1102         WLAN_STATUS_NO_DIRECT_LINK = 48,
1103         WLAN_STATUS_STA_NOT_PRESENT = 49,
1104         WLAN_STATUS_STA_NOT_QSTA = 50,
1105         /* 802.11s */
1106         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1107         WLAN_STATUS_FCG_NOT_SUPP = 78,
1108         WLAN_STATUS_STA_NO_TBTT = 78,
1109 };
1110
1111
1112 /* Reason codes */
1113 enum ieee80211_reasoncode {
1114         WLAN_REASON_UNSPECIFIED = 1,
1115         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1116         WLAN_REASON_DEAUTH_LEAVING = 3,
1117         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1118         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1119         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1120         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1121         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1122         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1123         /* 802.11h */
1124         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1125         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1126         /* 802.11i */
1127         WLAN_REASON_INVALID_IE = 13,
1128         WLAN_REASON_MIC_FAILURE = 14,
1129         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1130         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1131         WLAN_REASON_IE_DIFFERENT = 17,
1132         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1133         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1134         WLAN_REASON_INVALID_AKMP = 20,
1135         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1136         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1137         WLAN_REASON_IEEE8021X_FAILED = 23,
1138         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1139         /* 802.11e */
1140         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1141         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1142         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1143         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1144         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1145         WLAN_REASON_QSTA_NOT_USE = 37,
1146         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1147         WLAN_REASON_QSTA_TIMEOUT = 39,
1148         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1149         /* 802.11s */
1150         WLAN_REASON_MESH_PEER_CANCELED = 52,
1151         WLAN_REASON_MESH_MAX_PEERS = 53,
1152         WLAN_REASON_MESH_CONFIG = 54,
1153         WLAN_REASON_MESH_CLOSE = 55,
1154         WLAN_REASON_MESH_MAX_RETRIES = 56,
1155         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1156         WLAN_REASON_MESH_INVALID_GTK = 58,
1157         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1158         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1159         WLAN_REASON_MESH_PATH_ERROR = 61,
1160         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1161         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1162         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1163         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1164         WLAN_REASON_MESH_CHAN = 66,
1165 };
1166
1167
1168 /* Information Element IDs */
1169 enum ieee80211_eid {
1170         WLAN_EID_SSID = 0,
1171         WLAN_EID_SUPP_RATES = 1,
1172         WLAN_EID_FH_PARAMS = 2,
1173         WLAN_EID_DS_PARAMS = 3,
1174         WLAN_EID_CF_PARAMS = 4,
1175         WLAN_EID_TIM = 5,
1176         WLAN_EID_IBSS_PARAMS = 6,
1177         WLAN_EID_CHALLENGE = 16,
1178
1179         WLAN_EID_COUNTRY = 7,
1180         WLAN_EID_HP_PARAMS = 8,
1181         WLAN_EID_HP_TABLE = 9,
1182         WLAN_EID_REQUEST = 10,
1183
1184         WLAN_EID_QBSS_LOAD = 11,
1185         WLAN_EID_EDCA_PARAM_SET = 12,
1186         WLAN_EID_TSPEC = 13,
1187         WLAN_EID_TCLAS = 14,
1188         WLAN_EID_SCHEDULE = 15,
1189         WLAN_EID_TS_DELAY = 43,
1190         WLAN_EID_TCLAS_PROCESSING = 44,
1191         WLAN_EID_QOS_CAPA = 46,
1192         /* 802.11s */
1193         WLAN_EID_MESH_CONFIG = 113,
1194         WLAN_EID_MESH_ID = 114,
1195         WLAN_EID_LINK_METRIC_REPORT = 115,
1196         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1197         WLAN_EID_PEER_MGMT = 117,
1198         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1199         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1200         WLAN_EID_BEACON_TIMING = 120,
1201         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1202         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1203         WLAN_EID_MCCAOP_ADVERT = 123,
1204         WLAN_EID_MCCAOP_TEARDOWN = 124,
1205         WLAN_EID_GANN = 125,
1206         WLAN_EID_RANN = 126,
1207         WLAN_EID_PREQ = 130,
1208         WLAN_EID_PREP = 131,
1209         WLAN_EID_PERR = 132,
1210         WLAN_EID_PXU = 137,
1211         WLAN_EID_PXUC = 138,
1212         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1213         WLAN_EID_MIC = 140,
1214
1215         WLAN_EID_PWR_CONSTRAINT = 32,
1216         WLAN_EID_PWR_CAPABILITY = 33,
1217         WLAN_EID_TPC_REQUEST = 34,
1218         WLAN_EID_TPC_REPORT = 35,
1219         WLAN_EID_SUPPORTED_CHANNELS = 36,
1220         WLAN_EID_CHANNEL_SWITCH = 37,
1221         WLAN_EID_MEASURE_REQUEST = 38,
1222         WLAN_EID_MEASURE_REPORT = 39,
1223         WLAN_EID_QUIET = 40,
1224         WLAN_EID_IBSS_DFS = 41,
1225
1226         WLAN_EID_ERP_INFO = 42,
1227         WLAN_EID_EXT_SUPP_RATES = 50,
1228
1229         WLAN_EID_HT_CAPABILITY = 45,
1230         WLAN_EID_HT_INFORMATION = 61,
1231
1232         WLAN_EID_RSN = 48,
1233         WLAN_EID_MMIE = 76,
1234         WLAN_EID_WPA = 221,
1235         WLAN_EID_GENERIC = 221,
1236         WLAN_EID_VENDOR_SPECIFIC = 221,
1237         WLAN_EID_QOS_PARAMETER = 222,
1238
1239         WLAN_EID_AP_CHAN_REPORT = 51,
1240         WLAN_EID_NEIGHBOR_REPORT = 52,
1241         WLAN_EID_RCPI = 53,
1242         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1243         WLAN_EID_ANTENNA_INFO = 64,
1244         WLAN_EID_RSNI = 65,
1245         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1246         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1247         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1248         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1249         WLAN_EID_MULTIPLE_BSSID = 71,
1250         WLAN_EID_BSS_COEX_2040 = 72,
1251         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1252         WLAN_EID_EXT_CAPABILITY = 127,
1253
1254         WLAN_EID_MOBILITY_DOMAIN = 54,
1255         WLAN_EID_FAST_BSS_TRANSITION = 55,
1256         WLAN_EID_TIMEOUT_INTERVAL = 56,
1257         WLAN_EID_RIC_DATA = 57,
1258         WLAN_EID_RIC_DESCRIPTOR = 75,
1259
1260         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1261         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1262         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1263 };
1264
1265 /* Action category code */
1266 enum ieee80211_category {
1267         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1268         WLAN_CATEGORY_QOS = 1,
1269         WLAN_CATEGORY_DLS = 2,
1270         WLAN_CATEGORY_BACK = 3,
1271         WLAN_CATEGORY_PUBLIC = 4,
1272         WLAN_CATEGORY_HT = 7,
1273         WLAN_CATEGORY_SA_QUERY = 8,
1274         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1275         WLAN_CATEGORY_MESH_ACTION = 13,
1276         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1277         WLAN_CATEGORY_SELF_PROTECTED = 15,
1278         WLAN_CATEGORY_WMM = 17,
1279         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1280         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1281 };
1282
1283 /* SPECTRUM_MGMT action code */
1284 enum ieee80211_spectrum_mgmt_actioncode {
1285         WLAN_ACTION_SPCT_MSR_REQ = 0,
1286         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1287         WLAN_ACTION_SPCT_TPC_REQ = 2,
1288         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1289         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1290 };
1291
1292 /* HT action codes */
1293 enum ieee80211_ht_actioncode {
1294         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1295         WLAN_HT_ACTION_SMPS = 1,
1296         WLAN_HT_ACTION_PSMP = 2,
1297         WLAN_HT_ACTION_PCO_PHASE = 3,
1298         WLAN_HT_ACTION_CSI = 4,
1299         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1300         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1301         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1302 };
1303
1304 /* Self Protected Action codes */
1305 enum ieee80211_self_protected_actioncode {
1306         WLAN_SP_RESERVED = 0,
1307         WLAN_SP_MESH_PEERING_OPEN = 1,
1308         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1309         WLAN_SP_MESH_PEERING_CLOSE = 3,
1310         WLAN_SP_MGK_INFORM = 4,
1311         WLAN_SP_MGK_ACK = 5,
1312 };
1313
1314 /* Mesh action codes */
1315 enum ieee80211_mesh_actioncode {
1316         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1317         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1318         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1319         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1320         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1321         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1322         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1323         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1324         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1325         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1326         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1327 };
1328
1329 /* Security key length */
1330 enum ieee80211_key_len {
1331         WLAN_KEY_LEN_WEP40 = 5,
1332         WLAN_KEY_LEN_WEP104 = 13,
1333         WLAN_KEY_LEN_CCMP = 16,
1334         WLAN_KEY_LEN_TKIP = 32,
1335         WLAN_KEY_LEN_AES_CMAC = 16,
1336 };
1337
1338 /**
1339  * enum - mesh path selection protocol identifier
1340  *
1341  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1342  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1343  * be specified in a vendor specific information element
1344  */
1345 enum {
1346         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1347         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1348 };
1349
1350 /**
1351  * enum - mesh path selection metric identifier
1352  *
1353  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1354  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1355  * specified in a vendor specific information element
1356  */
1357 enum {
1358         IEEE80211_PATH_METRIC_AIRTIME = 0,
1359         IEEE80211_PATH_METRIC_VENDOR = 255,
1360 };
1361
1362
1363 /*
1364  * IEEE 802.11-2007 7.3.2.9 Country information element
1365  *
1366  * Minimum length is 8 octets, ie len must be evenly
1367  * divisible by 2
1368  */
1369
1370 /* Although the spec says 8 I'm seeing 6 in practice */
1371 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1372
1373 /* The Country String field of the element shall be 3 octets in length */
1374 #define IEEE80211_COUNTRY_STRING_LEN    3
1375
1376 /*
1377  * For regulatory extension stuff see IEEE 802.11-2007
1378  * Annex I (page 1141) and Annex J (page 1147). Also
1379  * review 7.3.2.9.
1380  *
1381  * When dot11RegulatoryClassesRequired is true and the
1382  * first_channel/reg_extension_id is >= 201 then the IE
1383  * compromises of the 'ext' struct represented below:
1384  *
1385  *  - Regulatory extension ID - when generating IE this just needs
1386  *    to be monotonically increasing for each triplet passed in
1387  *    the IE
1388  *  - Regulatory class - index into set of rules
1389  *  - Coverage class - index into air propagation time (Table 7-27),
1390  *    in microseconds, you can compute the air propagation time from
1391  *    the index by multiplying by 3, so index 10 yields a propagation
1392  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1393  *    yet. A value of 0 inicates air propagation of <= 1 us.
1394  *
1395  *  See also Table I.2 for Emission limit sets and table
1396  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1397  *  a reg_class to an emission limit set and behavior limit set.
1398  */
1399 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1400
1401 /*
1402  *  Channels numbers in the IE must be monotonically increasing
1403  *  if dot11RegulatoryClassesRequired is not true.
1404  *
1405  *  If dot11RegulatoryClassesRequired is true consecutive
1406  *  subband triplets following a regulatory triplet shall
1407  *  have monotonically increasing first_channel number fields.
1408  *
1409  *  Channel numbers shall not overlap.
1410  *
1411  *  Note that max_power is signed.
1412  */
1413 struct ieee80211_country_ie_triplet {
1414         union {
1415                 struct {
1416                         u8 first_channel;
1417                         u8 num_channels;
1418                         s8 max_power;
1419                 } __attribute__ ((packed)) chans;
1420                 struct {
1421                         u8 reg_extension_id;
1422                         u8 reg_class;
1423                         u8 coverage_class;
1424                 } __attribute__ ((packed)) ext;
1425         };
1426 } __attribute__ ((packed));
1427
1428 enum ieee80211_timeout_interval_type {
1429         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1430         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1431         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1432 };
1433
1434 /* BACK action code */
1435 enum ieee80211_back_actioncode {
1436         WLAN_ACTION_ADDBA_REQ = 0,
1437         WLAN_ACTION_ADDBA_RESP = 1,
1438         WLAN_ACTION_DELBA = 2,
1439 };
1440
1441 /* BACK (block-ack) parties */
1442 enum ieee80211_back_parties {
1443         WLAN_BACK_RECIPIENT = 0,
1444         WLAN_BACK_INITIATOR = 1,
1445 };
1446
1447 /* SA Query action */
1448 enum ieee80211_sa_query_action {
1449         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1450         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1451 };
1452
1453
1454 /* cipher suite selectors */
1455 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1456 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1457 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1458 /* reserved:                            0x000FAC03 */
1459 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1460 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1461 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1462
1463 /* AKM suite selectors */
1464 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1465 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1466 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1467 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1468
1469 #define WLAN_MAX_KEY_LEN                32
1470
1471 #define WLAN_PMKID_LEN                  16
1472
1473 /*
1474  * WMM/802.11e Tspec Element
1475  */
1476 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1477 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1478
1479 enum ieee80211_tspec_status_code {
1480         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1481         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1482 };
1483
1484 struct ieee80211_tspec_ie {
1485         u8 element_id;
1486         u8 len;
1487         u8 oui[3];
1488         u8 oui_type;
1489         u8 oui_subtype;
1490         u8 version;
1491         __le16 tsinfo;
1492         u8 tsinfo_resvd;
1493         __le16 nominal_msdu;
1494         __le16 max_msdu;
1495         __le32 min_service_int;
1496         __le32 max_service_int;
1497         __le32 inactivity_int;
1498         __le32 suspension_int;
1499         __le32 service_start_time;
1500         __le32 min_data_rate;
1501         __le32 mean_data_rate;
1502         __le32 peak_data_rate;
1503         __le32 max_burst_size;
1504         __le32 delay_bound;
1505         __le32 min_phy_rate;
1506         __le16 sba;
1507         __le16 medium_time;
1508 } __packed;
1509
1510 /**
1511  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1512  * @hdr: the frame
1513  *
1514  * The qos ctrl bytes come after the frame_control, duration, seq_num
1515  * and 3 or 4 addresses of length ETH_ALEN.
1516  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1517  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1518  */
1519 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1520 {
1521         if (ieee80211_has_a4(hdr->frame_control))
1522                 return (u8 *)hdr + 30;
1523         else
1524                 return (u8 *)hdr + 24;
1525 }
1526
1527 /**
1528  * ieee80211_get_SA - get pointer to SA
1529  * @hdr: the frame
1530  *
1531  * Given an 802.11 frame, this function returns the offset
1532  * to the source address (SA). It does not verify that the
1533  * header is long enough to contain the address, and the
1534  * header must be long enough to contain the frame control
1535  * field.
1536  */
1537 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1538 {
1539         if (ieee80211_has_a4(hdr->frame_control))
1540                 return hdr->addr4;
1541         if (ieee80211_has_fromds(hdr->frame_control))
1542                 return hdr->addr3;
1543         return hdr->addr2;
1544 }
1545
1546 /**
1547  * ieee80211_get_DA - get pointer to DA
1548  * @hdr: the frame
1549  *
1550  * Given an 802.11 frame, this function returns the offset
1551  * to the destination address (DA). It does not verify that
1552  * the header is long enough to contain the address, and the
1553  * header must be long enough to contain the frame control
1554  * field.
1555  */
1556 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1557 {
1558         if (ieee80211_has_tods(hdr->frame_control))
1559                 return hdr->addr3;
1560         else
1561                 return hdr->addr1;
1562 }
1563
1564 /**
1565  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1566  * @hdr: the frame (buffer must include at least the first octet of payload)
1567  */
1568 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1569 {
1570         if (ieee80211_is_disassoc(hdr->frame_control) ||
1571             ieee80211_is_deauth(hdr->frame_control))
1572                 return true;
1573
1574         if (ieee80211_is_action(hdr->frame_control)) {
1575                 u8 *category;
1576
1577                 /*
1578                  * Action frames, excluding Public Action frames, are Robust
1579                  * Management Frames. However, if we are looking at a Protected
1580                  * frame, skip the check since the data may be encrypted and
1581                  * the frame has already been found to be a Robust Management
1582                  * Frame (by the other end).
1583                  */
1584                 if (ieee80211_has_protected(hdr->frame_control))
1585                         return true;
1586                 category = ((u8 *) hdr) + 24;
1587                 return *category != WLAN_CATEGORY_PUBLIC &&
1588                         *category != WLAN_CATEGORY_HT &&
1589                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1590                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1591         }
1592
1593         return false;
1594 }
1595
1596 /**
1597  * ieee80211_fhss_chan_to_freq - get channel frequency
1598  * @channel: the FHSS channel
1599  *
1600  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1601  * Ref IEEE 802.11-2007 section 14.6
1602  */
1603 static inline int ieee80211_fhss_chan_to_freq(int channel)
1604 {
1605         if ((channel > 1) && (channel < 96))
1606                 return channel + 2400;
1607         else
1608                 return -1;
1609 }
1610
1611 /**
1612  * ieee80211_freq_to_fhss_chan - get channel
1613  * @freq: the channels frequency
1614  *
1615  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1616  * Ref IEEE 802.11-2007 section 14.6
1617  */
1618 static inline int ieee80211_freq_to_fhss_chan(int freq)
1619 {
1620         if ((freq > 2401) && (freq < 2496))
1621                 return freq - 2400;
1622         else
1623                 return -1;
1624 }
1625
1626 /**
1627  * ieee80211_dsss_chan_to_freq - get channel center frequency
1628  * @channel: the DSSS channel
1629  *
1630  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1631  * Ref IEEE 802.11-2007 section 15.6
1632  */
1633 static inline int ieee80211_dsss_chan_to_freq(int channel)
1634 {
1635         if ((channel > 0) && (channel < 14))
1636                 return 2407 + (channel * 5);
1637         else if (channel == 14)
1638                 return 2484;
1639         else
1640                 return -1;
1641 }
1642
1643 /**
1644  * ieee80211_freq_to_dsss_chan - get channel
1645  * @freq: the frequency
1646  *
1647  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1648  * Ref IEEE 802.11-2007 section 15.6
1649  *
1650  * This routine selects the channel with the closest center frequency.
1651  */
1652 static inline int ieee80211_freq_to_dsss_chan(int freq)
1653 {
1654         if ((freq >= 2410) && (freq < 2475))
1655                 return (freq - 2405) / 5;
1656         else if ((freq >= 2482) && (freq < 2487))
1657                 return 14;
1658         else
1659                 return -1;
1660 }
1661
1662 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1663  * Ref IEEE 802.11-2007 section 18.4.6.2
1664  *
1665  * The channels and frequencies are the same as those defined for DSSS
1666  */
1667 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1668 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1669
1670 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1671  * Ref IEEE 802.11-2007 section 19.4.2
1672  */
1673 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1674 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1675
1676 /**
1677  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1678  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1679  * @channel: the OFDM channel
1680  *
1681  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1682  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1683  */
1684 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1685 {
1686         if ((channel > 0) && (channel <= 200) &&
1687             (s_freq >= 4000))
1688                 return s_freq + (channel * 5);
1689         else
1690                 return -1;
1691 }
1692
1693 /**
1694  * ieee80211_freq_to_ofdm_channel - get channel
1695  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1696  * @freq: the frequency
1697  *
1698  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1699  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1700  *
1701  * This routine selects the channel with the closest center frequency.
1702  */
1703 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1704 {
1705         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1706             (s_freq >= 4000))
1707                 return (freq + 2 - s_freq) / 5;
1708         else
1709                 return -1;
1710 }
1711
1712 /**
1713  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1714  * @tu: the TUs
1715  */
1716 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1717 {
1718         return 1024 * tu;
1719 }
1720
1721 /**
1722  * ieee80211_check_tim - check if AID bit is set in TIM
1723  * @tim: the TIM IE
1724  * @tim_len: length of the TIM IE
1725  * @aid: the AID to look for
1726  */
1727 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1728                                        u8 tim_len, u16 aid)
1729 {
1730         u8 mask;
1731         u8 index, indexn1, indexn2;
1732
1733         if (unlikely(!tim || tim_len < sizeof(*tim)))
1734                 return false;
1735
1736         aid &= 0x3fff;
1737         index = aid / 8;
1738         mask  = 1 << (aid & 7);
1739
1740         indexn1 = tim->bitmap_ctrl & 0xfe;
1741         indexn2 = tim_len + indexn1 - 4;
1742
1743         if (index < indexn1 || index > indexn2)
1744                 return false;
1745
1746         index -= indexn1;
1747
1748         return !!(tim->virtual_map[index] & mask);
1749 }
1750
1751 #endif /* LINUX_IEEE80211_H */