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                                 struct {
 763                                         u8 action_code;
 764                                         u8 dialog_token;
 765                                         __le16 capability;
 766                                         u8 variable[0];
 767                                 } __packed tdls_discover_resp;
 768                         } u;
 769                 } __attribute__ ((packed)) action;
 770         } u;
 771 } __attribute__ ((packed));
 772
 773 /* Supported Rates value encodings in 802.11n-2009 7.3.2.2 */
 774 #define BSS_MEMBERSHIP_SELECTOR_HT_PHY  127
 775
 776 /* mgmt header + 1 byte category code */
 777 #define IEEE80211_MIN_ACTION_SIZE offsetof(struct ieee80211_mgmt, u.action.u)
 778
 779
 780 /* Management MIC information element (IEEE 802.11w) */
 781 struct ieee80211_mmie {
 782         u8 element_id;
 783         u8 length;
 784         __le16 key_id;
 785         u8 sequence_number[6];
 786         u8 mic[8];
 787 } __attribute__ ((packed));
 788
 789 struct ieee80211_vendor_ie {
 790         u8 element_id;
 791         u8 len;
 792         u8 oui[3];
 793         u8 oui_type;
 794 } __packed;
 795
 796 /* Control frames */
 797 struct ieee80211_rts {
 798         __le16 frame_control;
 799         __le16 duration;
 800         u8 ra[6];
 801         u8 ta[6];
 802 } __attribute__ ((packed));
 803
 804 struct ieee80211_cts {
 805         __le16 frame_control;
 806         __le16 duration;
 807         u8 ra[6];
 808 } __attribute__ ((packed));
 809
 810 struct ieee80211_pspoll {
 811         __le16 frame_control;
 812         __le16 aid;
 813         u8 bssid[6];
 814         u8 ta[6];
 815 } __attribute__ ((packed));
 816
 817 /* TDLS */
 818
 819 /* Link-id information element */
 820 struct ieee80211_tdls_lnkie {
 821         u8 ie_type; /* Link Identifier IE */
 822         u8 ie_len;
 823         u8 bssid[6];
 824         u8 init_sta[6];
 825         u8 resp_sta[6];
 826 } __packed;
 827
 828 struct ieee80211_tdls_data {
 829         u8 da[6];
 830         u8 sa[6];
 831         __be16 ether_type;
 832         u8 payload_type;
 833         u8 category;
 834         u8 action_code;
 835         union {
 836                 struct {
 837                         u8 dialog_token;
 838                         __le16 capability;
 839                         u8 variable[0];
 840                 } __packed setup_req;
 841                 struct {
 842                         __le16 status_code;
 843                         u8 dialog_token;
 844                         __le16 capability;
 845                         u8 variable[0];
 846                 } __packed setup_resp;
 847                 struct {
 848                         __le16 status_code;
 849                         u8 dialog_token;
 850                         u8 variable[0];
 851                 } __packed setup_cfm;
 852                 struct {
 853                         __le16 reason_code;
 854                         u8 variable[0];
 855                 } __packed teardown;
 856                 struct {
 857                         u8 dialog_token;
 858                         u8 variable[0];
 859                 } __packed discover_req;
 860         } u;
 861 } __packed;
 862
 863 /**
 864  * struct ieee80211_bar - HT Block Ack Request
 865  *
 866  * This structure refers to "HT BlockAckReq" as
 867  * described in 802.11n draft section 7.2.1.7.1
 868  */
 869 struct ieee80211_bar {
 870         __le16 frame_control;
 871         __le16 duration;
 872         __u8 ra[6];
 873         __u8 ta[6];
 874         __le16 control;
 875         __le16 start_seq_num;
 876 } __attribute__((packed));
 877
 878 /* 802.11 BAR control masks */
 879 #define IEEE80211_BAR_CTRL_ACK_POLICY_NORMAL    0x0000
 880 #define IEEE80211_BAR_CTRL_MULTI_TID            0x0002
 881 #define IEEE80211_BAR_CTRL_CBMTID_COMPRESSED_BA 0x0004
 882 #define IEEE80211_BAR_CTRL_TID_INFO_MASK        0xf000
 883 #define IEEE80211_BAR_CTRL_TID_INFO_SHIFT       12
 884
 885 #define IEEE80211_HT_MCS_MASK_LEN               10
 886
 887 /**
 888  * struct ieee80211_mcs_info - MCS information
 889  * @rx_mask: RX mask
 890  * @rx_highest: highest supported RX rate. If set represents
 891  *      the highest supported RX data rate in units of 1 Mbps.
 892  *      If this field is 0 this value should not be used to
 893  *      consider the highest RX data rate supported.
 894  * @tx_params: TX parameters
 895  */
 896 struct ieee80211_mcs_info {
 897         u8 rx_mask[IEEE80211_HT_MCS_MASK_LEN];
 898         __le16 rx_highest;
 899         u8 tx_params;
 900         u8 reserved[3];
 901 } __attribute__((packed));
 902
 903 /* 802.11n HT capability MSC set */
 904 #define IEEE80211_HT_MCS_RX_HIGHEST_MASK        0x3ff
 905 #define IEEE80211_HT_MCS_TX_DEFINED             0x01
 906 #define IEEE80211_HT_MCS_TX_RX_DIFF             0x02
 907 /* value 0 == 1 stream etc */
 908 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK    0x0C
 909 #define IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT   2
 910 #define         IEEE80211_HT_MCS_TX_MAX_STREAMS 4
 911 #define IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION  0x10
 912
 913 /*
 914  * 802.11n D5.0 20.3.5 / 20.6 says:
 915  * - indices 0 to 7 and 32 are single spatial stream
 916  * - 8 to 31 are multiple spatial streams using equal modulation
 917  *   [8..15 for two streams, 16..23 for three and 24..31 for four]
 918  * - remainder are multiple spatial streams using unequal modulation
 919  */
 920 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START 33
 921 #define IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE \
 922         (IEEE80211_HT_MCS_UNEQUAL_MODULATION_START / 8)
 923
 924 /**
 925  * struct ieee80211_ht_cap - HT capabilities
 926  *
 927  * This structure is the "HT capabilities element" as
 928  * described in 802.11n D5.0 7.3.2.57
 929  */
 930 struct ieee80211_ht_cap {
 931         __le16 cap_info;
 932         u8 ampdu_params_info;
 933
 934         /* 16 bytes MCS information */
 935         struct ieee80211_mcs_info mcs;
 936
 937         __le16 extended_ht_cap_info;
 938         __le32 tx_BF_cap_info;
 939         u8 antenna_selection_info;
 940 } __attribute__ ((packed));
 941
 942 /* 802.11n HT capabilities masks (for cap_info) */
 943 #define IEEE80211_HT_CAP_LDPC_CODING            0x0001
 944 #define IEEE80211_HT_CAP_SUP_WIDTH_20_40        0x0002
 945 #define IEEE80211_HT_CAP_SM_PS                  0x000C
 946 #define         IEEE80211_HT_CAP_SM_PS_SHIFT    2
 947 #define IEEE80211_HT_CAP_GRN_FLD                0x0010
 948 #define IEEE80211_HT_CAP_SGI_20                 0x0020
 949 #define IEEE80211_HT_CAP_SGI_40                 0x0040
 950 #define IEEE80211_HT_CAP_TX_STBC                0x0080
 951 #define IEEE80211_HT_CAP_RX_STBC                0x0300
 952 #define         IEEE80211_HT_CAP_RX_STBC_SHIFT  8
 953 #define IEEE80211_HT_CAP_DELAY_BA               0x0400
 954 #define IEEE80211_HT_CAP_MAX_AMSDU              0x0800
 955 #define IEEE80211_HT_CAP_DSSSCCK40              0x1000
 956 #define IEEE80211_HT_CAP_RESERVED               0x2000
 957 #define IEEE80211_HT_CAP_40MHZ_INTOLERANT       0x4000
 958 #define IEEE80211_HT_CAP_LSIG_TXOP_PROT         0x8000
 959
 960 /* 802.11n HT extended capabilities masks (for extended_ht_cap_info) */
 961 #define IEEE80211_HT_EXT_CAP_PCO                0x0001
 962 #define IEEE80211_HT_EXT_CAP_PCO_TIME           0x0006
 963 #define         IEEE80211_HT_EXT_CAP_PCO_TIME_SHIFT     1
 964 #define IEEE80211_HT_EXT_CAP_MCS_FB             0x0300
 965 #define         IEEE80211_HT_EXT_CAP_MCS_FB_SHIFT       8
 966 #define IEEE80211_HT_EXT_CAP_HTC_SUP            0x0400
 967 #define IEEE80211_HT_EXT_CAP_RD_RESPONDER       0x0800
 968
 969 /* 802.11n HT capability AMPDU settings (for ampdu_params_info) */
 970 #define IEEE80211_HT_AMPDU_PARM_FACTOR          0x03
 971 #define IEEE80211_HT_AMPDU_PARM_DENSITY         0x1C
 972 #define         IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT   2
 973
 974 /*
 975  * Maximum length of AMPDU that the STA can receive.
 976  * Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
 977  */
 978 enum ieee80211_max_ampdu_length_exp {
 979         IEEE80211_HT_MAX_AMPDU_8K = 0,
 980         IEEE80211_HT_MAX_AMPDU_16K = 1,
 981         IEEE80211_HT_MAX_AMPDU_32K = 2,
 982         IEEE80211_HT_MAX_AMPDU_64K = 3
 983 };
 984
 985 #define IEEE80211_HT_MAX_AMPDU_FACTOR 13
 986
 987 /* Minimum MPDU start spacing */
 988 enum ieee80211_min_mpdu_spacing {
 989         IEEE80211_HT_MPDU_DENSITY_NONE = 0,     /* No restriction */
 990         IEEE80211_HT_MPDU_DENSITY_0_25 = 1,     /* 1/4 usec */
 991         IEEE80211_HT_MPDU_DENSITY_0_5 = 2,      /* 1/2 usec */
 992         IEEE80211_HT_MPDU_DENSITY_1 = 3,        /* 1 usec */
 993         IEEE80211_HT_MPDU_DENSITY_2 = 4,        /* 2 usec */
 994         IEEE80211_HT_MPDU_DENSITY_4 = 5,        /* 4 usec */
 995         IEEE80211_HT_MPDU_DENSITY_8 = 6,        /* 8 usec */
 996         IEEE80211_HT_MPDU_DENSITY_16 = 7        /* 16 usec */
 997 };
 998
 999 /**
1000  * struct ieee80211_ht_info - HT information
1001  *
1002  * This structure is the "HT information element" as
1003  * described in 802.11n D5.0 7.3.2.58
1004  */
1005 struct ieee80211_ht_info {
1006         u8 control_chan;
1007         u8 ht_param;
1008         __le16 operation_mode;
1009         __le16 stbc_param;
1010         u8 basic_set[16];
1011 } __attribute__ ((packed));
1012
1013 /* for ht_param */
1014 #define IEEE80211_HT_PARAM_CHA_SEC_OFFSET               0x03
1015 #define         IEEE80211_HT_PARAM_CHA_SEC_NONE         0x00
1016 #define         IEEE80211_HT_PARAM_CHA_SEC_ABOVE        0x01
1017 #define         IEEE80211_HT_PARAM_CHA_SEC_BELOW        0x03
1018 #define IEEE80211_HT_PARAM_CHAN_WIDTH_ANY               0x04
1019 #define IEEE80211_HT_PARAM_RIFS_MODE                    0x08
1020 #define IEEE80211_HT_PARAM_SPSMP_SUPPORT                0x10
1021 #define IEEE80211_HT_PARAM_SERV_INTERVAL_GRAN           0xE0
1022
1023 /* for operation_mode */
1024 #define IEEE80211_HT_OP_MODE_PROTECTION                 0x0003
1025 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONE            0
1026 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER       1
1027 #define         IEEE80211_HT_OP_MODE_PROTECTION_20MHZ           2
1028 #define         IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED     3
1029 #define IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT           0x0004
1030 #define IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT           0x0010
1031
1032 /* for stbc_param */
1033 #define IEEE80211_HT_STBC_PARAM_DUAL_BEACON             0x0040
1034 #define IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT           0x0080
1035 #define IEEE80211_HT_STBC_PARAM_STBC_BEACON             0x0100
1036 #define IEEE80211_HT_STBC_PARAM_LSIG_TXOP_FULLPROT      0x0200
1037 #define IEEE80211_HT_STBC_PARAM_PCO_ACTIVE              0x0400
1038 #define IEEE80211_HT_STBC_PARAM_PCO_PHASE               0x0800
1039
1040
1041 /* block-ack parameters */
1042 #define IEEE80211_ADDBA_PARAM_POLICY_MASK 0x0002
1043 #define IEEE80211_ADDBA_PARAM_TID_MASK 0x003C
1044 #define IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK 0xFFC0
1045 #define IEEE80211_DELBA_PARAM_TID_MASK 0xF000
1046 #define IEEE80211_DELBA_PARAM_INITIATOR_MASK 0x0800
1047
1048 /*
1049  * A-PMDU buffer sizes
1050  * According to IEEE802.11n spec size varies from 8K to 64K (in powers of 2)
1051  */
1052 #define IEEE80211_MIN_AMPDU_BUF 0x8
1053 #define IEEE80211_MAX_AMPDU_BUF 0x40
1054
1055
1056 /* Spatial Multiplexing Power Save Modes (for capability) */
1057 #define WLAN_HT_CAP_SM_PS_STATIC        0
1058 #define WLAN_HT_CAP_SM_PS_DYNAMIC       1
1059 #define WLAN_HT_CAP_SM_PS_INVALID       2
1060 #define WLAN_HT_CAP_SM_PS_DISABLED      3
1061
1062 /* for SM power control field lower two bits */
1063 #define WLAN_HT_SMPS_CONTROL_DISABLED   0
1064 #define WLAN_HT_SMPS_CONTROL_STATIC     1
1065 #define WLAN_HT_SMPS_CONTROL_DYNAMIC    3
1066
1067 /* Authentication algorithms */
1068 #define WLAN_AUTH_OPEN 0
1069 #define WLAN_AUTH_SHARED_KEY 1
1070 #define WLAN_AUTH_FT 2
1071 #define WLAN_AUTH_SAE 3
1072 #define WLAN_AUTH_LEAP 128
1073
1074 #define WLAN_AUTH_CHALLENGE_LEN 128
1075
1076 #define WLAN_CAPABILITY_ESS             (1<<0)
1077 #define WLAN_CAPABILITY_IBSS            (1<<1)
1078
1079 /*
1080  * A mesh STA sets the ESS and IBSS capability bits to zero.
1081  * however, this holds true for p2p probe responses (in the p2p_find
1082  * phase) as well.
1083  */
1084 #define WLAN_CAPABILITY_IS_STA_BSS(cap) \
1085         (!((cap) & (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)))
1086
1087 #define WLAN_CAPABILITY_CF_POLLABLE     (1<<2)
1088 #define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
1089 #define WLAN_CAPABILITY_PRIVACY         (1<<4)
1090 #define WLAN_CAPABILITY_SHORT_PREAMBLE  (1<<5)
1091 #define WLAN_CAPABILITY_PBCC            (1<<6)
1092 #define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
1093
1094 /* 802.11h */
1095 #define WLAN_CAPABILITY_SPECTRUM_MGMT   (1<<8)
1096 #define WLAN_CAPABILITY_QOS             (1<<9)
1097 #define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
1098 #define WLAN_CAPABILITY_DSSS_OFDM       (1<<13)
1099 /* measurement */
1100 #define IEEE80211_SPCT_MSR_RPRT_MODE_LATE       (1<<0)
1101 #define IEEE80211_SPCT_MSR_RPRT_MODE_INCAPABLE  (1<<1)
1102 #define IEEE80211_SPCT_MSR_RPRT_MODE_REFUSED    (1<<2)
1103
1104 #define IEEE80211_SPCT_MSR_RPRT_TYPE_BASIC      0
1105 #define IEEE80211_SPCT_MSR_RPRT_TYPE_CCA        1
1106 #define IEEE80211_SPCT_MSR_RPRT_TYPE_RPI        2
1107
1108
1109 /* 802.11g ERP information element */
1110 #define WLAN_ERP_NON_ERP_PRESENT (1<<0)
1111 #define WLAN_ERP_USE_PROTECTION (1<<1)
1112 #define WLAN_ERP_BARKER_PREAMBLE (1<<2)
1113
1114 /* WLAN_ERP_BARKER_PREAMBLE values */
1115 enum {
1116         WLAN_ERP_PREAMBLE_SHORT = 0,
1117         WLAN_ERP_PREAMBLE_LONG = 1,
1118 };
1119
1120 /* Status codes */
1121 enum ieee80211_statuscode {
1122         WLAN_STATUS_SUCCESS = 0,
1123         WLAN_STATUS_UNSPECIFIED_FAILURE = 1,
1124         WLAN_STATUS_CAPS_UNSUPPORTED = 10,
1125         WLAN_STATUS_REASSOC_NO_ASSOC = 11,
1126         WLAN_STATUS_ASSOC_DENIED_UNSPEC = 12,
1127         WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG = 13,
1128         WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION = 14,
1129         WLAN_STATUS_CHALLENGE_FAIL = 15,
1130         WLAN_STATUS_AUTH_TIMEOUT = 16,
1131         WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA = 17,
1132         WLAN_STATUS_ASSOC_DENIED_RATES = 18,
1133         /* 802.11b */
1134         WLAN_STATUS_ASSOC_DENIED_NOSHORTPREAMBLE = 19,
1135         WLAN_STATUS_ASSOC_DENIED_NOPBCC = 20,
1136         WLAN_STATUS_ASSOC_DENIED_NOAGILITY = 21,
1137         /* 802.11h */
1138         WLAN_STATUS_ASSOC_DENIED_NOSPECTRUM = 22,
1139         WLAN_STATUS_ASSOC_REJECTED_BAD_POWER = 23,
1140         WLAN_STATUS_ASSOC_REJECTED_BAD_SUPP_CHAN = 24,
1141         /* 802.11g */
1142         WLAN_STATUS_ASSOC_DENIED_NOSHORTTIME = 25,
1143         WLAN_STATUS_ASSOC_DENIED_NODSSSOFDM = 26,
1144         /* 802.11w */
1145         WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY = 30,
1146         WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION = 31,
1147         /* 802.11i */
1148         WLAN_STATUS_INVALID_IE = 40,
1149         WLAN_STATUS_INVALID_GROUP_CIPHER = 41,
1150         WLAN_STATUS_INVALID_PAIRWISE_CIPHER = 42,
1151         WLAN_STATUS_INVALID_AKMP = 43,
1152         WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
1153         WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
1154         WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
1155         /* 802.11e */
1156         WLAN_STATUS_UNSPECIFIED_QOS = 32,
1157         WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
1158         WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
1159         WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
1160         WLAN_STATUS_REQUEST_DECLINED = 37,
1161         WLAN_STATUS_INVALID_QOS_PARAM = 38,
1162         WLAN_STATUS_CHANGE_TSPEC = 39,
1163         WLAN_STATUS_WAIT_TS_DELAY = 47,
1164         WLAN_STATUS_NO_DIRECT_LINK = 48,
1165         WLAN_STATUS_STA_NOT_PRESENT = 49,
1166         WLAN_STATUS_STA_NOT_QSTA = 50,
1167         /* 802.11s */
1168         WLAN_STATUS_ANTI_CLOG_REQUIRED = 76,
1169         WLAN_STATUS_FCG_NOT_SUPP = 78,
1170         WLAN_STATUS_STA_NO_TBTT = 78,
1171 };
1172
1173
1174 /* Reason codes */
1175 enum ieee80211_reasoncode {
1176         WLAN_REASON_UNSPECIFIED = 1,
1177         WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
1178         WLAN_REASON_DEAUTH_LEAVING = 3,
1179         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY = 4,
1180         WLAN_REASON_DISASSOC_AP_BUSY = 5,
1181         WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA = 6,
1182         WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA = 7,
1183         WLAN_REASON_DISASSOC_STA_HAS_LEFT = 8,
1184         WLAN_REASON_STA_REQ_ASSOC_WITHOUT_AUTH = 9,
1185         /* 802.11h */
1186         WLAN_REASON_DISASSOC_BAD_POWER = 10,
1187         WLAN_REASON_DISASSOC_BAD_SUPP_CHAN = 11,
1188         /* 802.11i */
1189         WLAN_REASON_INVALID_IE = 13,
1190         WLAN_REASON_MIC_FAILURE = 14,
1191         WLAN_REASON_4WAY_HANDSHAKE_TIMEOUT = 15,
1192         WLAN_REASON_GROUP_KEY_HANDSHAKE_TIMEOUT = 16,
1193         WLAN_REASON_IE_DIFFERENT = 17,
1194         WLAN_REASON_INVALID_GROUP_CIPHER = 18,
1195         WLAN_REASON_INVALID_PAIRWISE_CIPHER = 19,
1196         WLAN_REASON_INVALID_AKMP = 20,
1197         WLAN_REASON_UNSUPP_RSN_VERSION = 21,
1198         WLAN_REASON_INVALID_RSN_IE_CAP = 22,
1199         WLAN_REASON_IEEE8021X_FAILED = 23,
1200         WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
1201         /* 802.11e */
1202         WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
1203         WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
1204         WLAN_REASON_DISASSOC_LOW_ACK = 34,
1205         WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
1206         WLAN_REASON_QSTA_LEAVE_QBSS = 36,
1207         WLAN_REASON_QSTA_NOT_USE = 37,
1208         WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
1209         WLAN_REASON_QSTA_TIMEOUT = 39,
1210         WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
1211         /* 802.11s */
1212         WLAN_REASON_MESH_PEER_CANCELED = 52,
1213         WLAN_REASON_MESH_MAX_PEERS = 53,
1214         WLAN_REASON_MESH_CONFIG = 54,
1215         WLAN_REASON_MESH_CLOSE = 55,
1216         WLAN_REASON_MESH_MAX_RETRIES = 56,
1217         WLAN_REASON_MESH_CONFIRM_TIMEOUT = 57,
1218         WLAN_REASON_MESH_INVALID_GTK = 58,
1219         WLAN_REASON_MESH_INCONSISTENT_PARAM = 59,
1220         WLAN_REASON_MESH_INVALID_SECURITY = 60,
1221         WLAN_REASON_MESH_PATH_ERROR = 61,
1222         WLAN_REASON_MESH_PATH_NOFORWARD = 62,
1223         WLAN_REASON_MESH_PATH_DEST_UNREACHABLE = 63,
1224         WLAN_REASON_MAC_EXISTS_IN_MBSS = 64,
1225         WLAN_REASON_MESH_CHAN_REGULATORY = 65,
1226         WLAN_REASON_MESH_CHAN = 66,
1227 };
1228
1229
1230 /* Information Element IDs */
1231 enum ieee80211_eid {
1232         WLAN_EID_SSID = 0,
1233         WLAN_EID_SUPP_RATES = 1,
1234         WLAN_EID_FH_PARAMS = 2,
1235         WLAN_EID_DS_PARAMS = 3,
1236         WLAN_EID_CF_PARAMS = 4,
1237         WLAN_EID_TIM = 5,
1238         WLAN_EID_IBSS_PARAMS = 6,
1239         WLAN_EID_CHALLENGE = 16,
1240
1241         WLAN_EID_COUNTRY = 7,
1242         WLAN_EID_HP_PARAMS = 8,
1243         WLAN_EID_HP_TABLE = 9,
1244         WLAN_EID_REQUEST = 10,
1245
1246         WLAN_EID_QBSS_LOAD = 11,
1247         WLAN_EID_EDCA_PARAM_SET = 12,
1248         WLAN_EID_TSPEC = 13,
1249         WLAN_EID_TCLAS = 14,
1250         WLAN_EID_SCHEDULE = 15,
1251         WLAN_EID_TS_DELAY = 43,
1252         WLAN_EID_TCLAS_PROCESSING = 44,
1253         WLAN_EID_QOS_CAPA = 46,
1254         /* 802.11z */
1255         WLAN_EID_LINK_ID = 101,
1256         /* 802.11s */
1257         WLAN_EID_MESH_CONFIG = 113,
1258         WLAN_EID_MESH_ID = 114,
1259         WLAN_EID_LINK_METRIC_REPORT = 115,
1260         WLAN_EID_CONGESTION_NOTIFICATION = 116,
1261         WLAN_EID_PEER_MGMT = 117,
1262         WLAN_EID_CHAN_SWITCH_PARAM = 118,
1263         WLAN_EID_MESH_AWAKE_WINDOW = 119,
1264         WLAN_EID_BEACON_TIMING = 120,
1265         WLAN_EID_MCCAOP_SETUP_REQ = 121,
1266         WLAN_EID_MCCAOP_SETUP_RESP = 122,
1267         WLAN_EID_MCCAOP_ADVERT = 123,
1268         WLAN_EID_MCCAOP_TEARDOWN = 124,
1269         WLAN_EID_GANN = 125,
1270         WLAN_EID_RANN = 126,
1271         WLAN_EID_PREQ = 130,
1272         WLAN_EID_PREP = 131,
1273         WLAN_EID_PERR = 132,
1274         WLAN_EID_PXU = 137,
1275         WLAN_EID_PXUC = 138,
1276         WLAN_EID_AUTH_MESH_PEER_EXCH = 139,
1277         WLAN_EID_MIC = 140,
1278
1279         WLAN_EID_PWR_CONSTRAINT = 32,
1280         WLAN_EID_PWR_CAPABILITY = 33,
1281         WLAN_EID_TPC_REQUEST = 34,
1282         WLAN_EID_TPC_REPORT = 35,
1283         WLAN_EID_SUPPORTED_CHANNELS = 36,
1284         WLAN_EID_CHANNEL_SWITCH = 37,
1285         WLAN_EID_MEASURE_REQUEST = 38,
1286         WLAN_EID_MEASURE_REPORT = 39,
1287         WLAN_EID_QUIET = 40,
1288         WLAN_EID_IBSS_DFS = 41,
1289
1290         WLAN_EID_ERP_INFO = 42,
1291         WLAN_EID_EXT_SUPP_RATES = 50,
1292
1293         WLAN_EID_HT_CAPABILITY = 45,
1294         WLAN_EID_HT_INFORMATION = 61,
1295
1296         WLAN_EID_RSN = 48,
1297         WLAN_EID_MMIE = 76,
1298         WLAN_EID_WPA = 221,
1299         WLAN_EID_GENERIC = 221,
1300         WLAN_EID_VENDOR_SPECIFIC = 221,
1301         WLAN_EID_QOS_PARAMETER = 222,
1302
1303         WLAN_EID_AP_CHAN_REPORT = 51,
1304         WLAN_EID_NEIGHBOR_REPORT = 52,
1305         WLAN_EID_RCPI = 53,
1306         WLAN_EID_BSS_AVG_ACCESS_DELAY = 63,
1307         WLAN_EID_ANTENNA_INFO = 64,
1308         WLAN_EID_RSNI = 65,
1309         WLAN_EID_MEASUREMENT_PILOT_TX_INFO = 66,
1310         WLAN_EID_BSS_AVAILABLE_CAPACITY = 67,
1311         WLAN_EID_BSS_AC_ACCESS_DELAY = 68,
1312         WLAN_EID_RRM_ENABLED_CAPABILITIES = 70,
1313         WLAN_EID_MULTIPLE_BSSID = 71,
1314         WLAN_EID_BSS_COEX_2040 = 72,
1315         WLAN_EID_OVERLAP_BSS_SCAN_PARAM = 74,
1316         WLAN_EID_EXT_CAPABILITY = 127,
1317
1318         WLAN_EID_MOBILITY_DOMAIN = 54,
1319         WLAN_EID_FAST_BSS_TRANSITION = 55,
1320         WLAN_EID_TIMEOUT_INTERVAL = 56,
1321         WLAN_EID_RIC_DATA = 57,
1322         WLAN_EID_RIC_DESCRIPTOR = 75,
1323
1324         WLAN_EID_DSE_REGISTERED_LOCATION = 58,
1325         WLAN_EID_SUPPORTED_REGULATORY_CLASSES = 59,
1326         WLAN_EID_EXT_CHANSWITCH_ANN = 60,
1327 };
1328
1329 /* Action category code */
1330 enum ieee80211_category {
1331         WLAN_CATEGORY_SPECTRUM_MGMT = 0,
1332         WLAN_CATEGORY_QOS = 1,
1333         WLAN_CATEGORY_DLS = 2,
1334         WLAN_CATEGORY_BACK = 3,
1335         WLAN_CATEGORY_PUBLIC = 4,
1336         WLAN_CATEGORY_HT = 7,
1337         WLAN_CATEGORY_SA_QUERY = 8,
1338         WLAN_CATEGORY_PROTECTED_DUAL_OF_ACTION = 9,
1339         WLAN_CATEGORY_TDLS = 12,
1340         WLAN_CATEGORY_MESH_ACTION = 13,
1341         WLAN_CATEGORY_MULTIHOP_ACTION = 14,
1342         WLAN_CATEGORY_SELF_PROTECTED = 15,
1343         WLAN_CATEGORY_WMM = 17,
1344         WLAN_CATEGORY_VENDOR_SPECIFIC_PROTECTED = 126,
1345         WLAN_CATEGORY_VENDOR_SPECIFIC = 127,
1346 };
1347
1348 /* SPECTRUM_MGMT action code */
1349 enum ieee80211_spectrum_mgmt_actioncode {
1350         WLAN_ACTION_SPCT_MSR_REQ = 0,
1351         WLAN_ACTION_SPCT_MSR_RPRT = 1,
1352         WLAN_ACTION_SPCT_TPC_REQ = 2,
1353         WLAN_ACTION_SPCT_TPC_RPRT = 3,
1354         WLAN_ACTION_SPCT_CHL_SWITCH = 4,
1355 };
1356
1357 /* HT action codes */
1358 enum ieee80211_ht_actioncode {
1359         WLAN_HT_ACTION_NOTIFY_CHANWIDTH = 0,
1360         WLAN_HT_ACTION_SMPS = 1,
1361         WLAN_HT_ACTION_PSMP = 2,
1362         WLAN_HT_ACTION_PCO_PHASE = 3,
1363         WLAN_HT_ACTION_CSI = 4,
1364         WLAN_HT_ACTION_NONCOMPRESSED_BF = 5,
1365         WLAN_HT_ACTION_COMPRESSED_BF = 6,
1366         WLAN_HT_ACTION_ASEL_IDX_FEEDBACK = 7,
1367 };
1368
1369 /* Self Protected Action codes */
1370 enum ieee80211_self_protected_actioncode {
1371         WLAN_SP_RESERVED = 0,
1372         WLAN_SP_MESH_PEERING_OPEN = 1,
1373         WLAN_SP_MESH_PEERING_CONFIRM = 2,
1374         WLAN_SP_MESH_PEERING_CLOSE = 3,
1375         WLAN_SP_MGK_INFORM = 4,
1376         WLAN_SP_MGK_ACK = 5,
1377 };
1378
1379 /* Mesh action codes */
1380 enum ieee80211_mesh_actioncode {
1381         WLAN_MESH_ACTION_LINK_METRIC_REPORT,
1382         WLAN_MESH_ACTION_HWMP_PATH_SELECTION,
1383         WLAN_MESH_ACTION_GATE_ANNOUNCEMENT,
1384         WLAN_MESH_ACTION_CONGESTION_CONTROL_NOTIFICATION,
1385         WLAN_MESH_ACTION_MCCA_SETUP_REQUEST,
1386         WLAN_MESH_ACTION_MCCA_SETUP_REPLY,
1387         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT_REQUEST,
1388         WLAN_MESH_ACTION_MCCA_ADVERTISEMENT,
1389         WLAN_MESH_ACTION_MCCA_TEARDOWN,
1390         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_REQUEST,
1391         WLAN_MESH_ACTION_TBTT_ADJUSTMENT_RESPONSE,
1392 };
1393
1394 /* Security key length */
1395 enum ieee80211_key_len {
1396         WLAN_KEY_LEN_WEP40 = 5,
1397         WLAN_KEY_LEN_WEP104 = 13,
1398         WLAN_KEY_LEN_CCMP = 16,
1399         WLAN_KEY_LEN_TKIP = 32,
1400         WLAN_KEY_LEN_AES_CMAC = 16,
1401 };
1402
1403 /* Public action codes */
1404 enum ieee80211_pub_actioncode {
1405         WLAN_PUB_ACTION_TDLS_DISCOVER_RES = 14,
1406 };
1407
1408 /* TDLS action codes */
1409 enum ieee80211_tdls_actioncode {
1410         WLAN_TDLS_SETUP_REQUEST = 0,
1411         WLAN_TDLS_SETUP_RESPONSE = 1,
1412         WLAN_TDLS_SETUP_CONFIRM = 2,
1413         WLAN_TDLS_TEARDOWN = 3,
1414         WLAN_TDLS_PEER_TRAFFIC_INDICATION = 4,
1415         WLAN_TDLS_CHANNEL_SWITCH_REQUEST = 5,
1416         WLAN_TDLS_CHANNEL_SWITCH_RESPONSE = 6,
1417         WLAN_TDLS_PEER_PSM_REQUEST = 7,
1418         WLAN_TDLS_PEER_PSM_RESPONSE = 8,
1419         WLAN_TDLS_PEER_TRAFFIC_RESPONSE = 9,
1420         WLAN_TDLS_DISCOVERY_REQUEST = 10,
1421 };
1422
1423 /*
1424  * TDLS capabililites to be enabled in the 5th byte of the
1425  * @WLAN_EID_EXT_CAPABILITY information element
1426  */
1427 #define WLAN_EXT_CAPA5_TDLS_ENABLED     BIT(5)
1428 #define WLAN_EXT_CAPA5_TDLS_PROHIBITED  BIT(6)
1429
1430 /* TDLS specific payload type in the LLC/SNAP header */
1431 #define WLAN_TDLS_SNAP_RFTYPE   0x2
1432
1433 /**
1434  * enum - mesh path selection protocol identifier
1435  *
1436  * @IEEE80211_PATH_PROTOCOL_HWMP: the default path selection protocol
1437  * @IEEE80211_PATH_PROTOCOL_VENDOR: a vendor specific protocol that will
1438  * be specified in a vendor specific information element
1439  */
1440 enum {
1441         IEEE80211_PATH_PROTOCOL_HWMP = 0,
1442         IEEE80211_PATH_PROTOCOL_VENDOR = 255,
1443 };
1444
1445 /**
1446  * enum - mesh path selection metric identifier
1447  *
1448  * @IEEE80211_PATH_METRIC_AIRTIME: the default path selection metric
1449  * @IEEE80211_PATH_METRIC_VENDOR: a vendor specific metric that will be
1450  * specified in a vendor specific information element
1451  */
1452 enum {
1453         IEEE80211_PATH_METRIC_AIRTIME = 0,
1454         IEEE80211_PATH_METRIC_VENDOR = 255,
1455 };
1456
1457
1458 /*
1459  * IEEE 802.11-2007 7.3.2.9 Country information element
1460  *
1461  * Minimum length is 8 octets, ie len must be evenly
1462  * divisible by 2
1463  */
1464
1465 /* Although the spec says 8 I'm seeing 6 in practice */
1466 #define IEEE80211_COUNTRY_IE_MIN_LEN    6
1467
1468 /* The Country String field of the element shall be 3 octets in length */
1469 #define IEEE80211_COUNTRY_STRING_LEN    3
1470
1471 /*
1472  * For regulatory extension stuff see IEEE 802.11-2007
1473  * Annex I (page 1141) and Annex J (page 1147). Also
1474  * review 7.3.2.9.
1475  *
1476  * When dot11RegulatoryClassesRequired is true and the
1477  * first_channel/reg_extension_id is >= 201 then the IE
1478  * compromises of the 'ext' struct represented below:
1479  *
1480  *  - Regulatory extension ID - when generating IE this just needs
1481  *    to be monotonically increasing for each triplet passed in
1482  *    the IE
1483  *  - Regulatory class - index into set of rules
1484  *  - Coverage class - index into air propagation time (Table 7-27),
1485  *    in microseconds, you can compute the air propagation time from
1486  *    the index by multiplying by 3, so index 10 yields a propagation
1487  *    of 10 us. Valid values are 0-31, values 32-255 are not defined
1488  *    yet. A value of 0 inicates air propagation of <= 1 us.
1489  *
1490  *  See also Table I.2 for Emission limit sets and table
1491  *  I.3 for Behavior limit sets. Table J.1 indicates how to map
1492  *  a reg_class to an emission limit set and behavior limit set.
1493  */
1494 #define IEEE80211_COUNTRY_EXTENSION_ID 201
1495
1496 /*
1497  *  Channels numbers in the IE must be monotonically increasing
1498  *  if dot11RegulatoryClassesRequired is not true.
1499  *
1500  *  If dot11RegulatoryClassesRequired is true consecutive
1501  *  subband triplets following a regulatory triplet shall
1502  *  have monotonically increasing first_channel number fields.
1503  *
1504  *  Channel numbers shall not overlap.
1505  *
1506  *  Note that max_power is signed.
1507  */
1508 struct ieee80211_country_ie_triplet {
1509         union {
1510                 struct {
1511                         u8 first_channel;
1512                         u8 num_channels;
1513                         s8 max_power;
1514                 } __attribute__ ((packed)) chans;
1515                 struct {
1516                         u8 reg_extension_id;
1517                         u8 reg_class;
1518                         u8 coverage_class;
1519                 } __attribute__ ((packed)) ext;
1520         };
1521 } __attribute__ ((packed));
1522
1523 enum ieee80211_timeout_interval_type {
1524         WLAN_TIMEOUT_REASSOC_DEADLINE = 1 /* 802.11r */,
1525         WLAN_TIMEOUT_KEY_LIFETIME = 2 /* 802.11r */,
1526         WLAN_TIMEOUT_ASSOC_COMEBACK = 3 /* 802.11w */,
1527 };
1528
1529 /* BACK action code */
1530 enum ieee80211_back_actioncode {
1531         WLAN_ACTION_ADDBA_REQ = 0,
1532         WLAN_ACTION_ADDBA_RESP = 1,
1533         WLAN_ACTION_DELBA = 2,
1534 };
1535
1536 /* BACK (block-ack) parties */
1537 enum ieee80211_back_parties {
1538         WLAN_BACK_RECIPIENT = 0,
1539         WLAN_BACK_INITIATOR = 1,
1540 };
1541
1542 /* SA Query action */
1543 enum ieee80211_sa_query_action {
1544         WLAN_ACTION_SA_QUERY_REQUEST = 0,
1545         WLAN_ACTION_SA_QUERY_RESPONSE = 1,
1546 };
1547
1548
1549 /* cipher suite selectors */
1550 #define WLAN_CIPHER_SUITE_USE_GROUP     0x000FAC00
1551 #define WLAN_CIPHER_SUITE_WEP40         0x000FAC01
1552 #define WLAN_CIPHER_SUITE_TKIP          0x000FAC02
1553 /* reserved:                            0x000FAC03 */
1554 #define WLAN_CIPHER_SUITE_CCMP          0x000FAC04
1555 #define WLAN_CIPHER_SUITE_WEP104        0x000FAC05
1556 #define WLAN_CIPHER_SUITE_AES_CMAC      0x000FAC06
1557
1558 /* AKM suite selectors */
1559 #define WLAN_AKM_SUITE_8021X            0x000FAC01
1560 #define WLAN_AKM_SUITE_PSK              0x000FAC02
1561 #define WLAN_AKM_SUITE_SAE                      0x000FAC08
1562 #define WLAN_AKM_SUITE_FT_OVER_SAE      0x000FAC09
1563
1564 #define WLAN_MAX_KEY_LEN                32
1565
1566 #define WLAN_PMKID_LEN                  16
1567
1568 #define WLAN_OUI_WFA                    0x506f9a
1569 #define WLAN_OUI_TYPE_WFA_P2P           9
1570
1571 /*
1572  * WMM/802.11e Tspec Element
1573  */
1574 #define IEEE80211_WMM_IE_TSPEC_TID_MASK         0x0F
1575 #define IEEE80211_WMM_IE_TSPEC_TID_SHIFT        1
1576
1577 enum ieee80211_tspec_status_code {
1578         IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED = 0,
1579         IEEE80211_TSPEC_STATUS_ADDTS_INVAL_PARAMS = 0x1,
1580 };
1581
1582 struct ieee80211_tspec_ie {
1583         u8 element_id;
1584         u8 len;
1585         u8 oui[3];
1586         u8 oui_type;
1587         u8 oui_subtype;
1588         u8 version;
1589         __le16 tsinfo;
1590         u8 tsinfo_resvd;
1591         __le16 nominal_msdu;
1592         __le16 max_msdu;
1593         __le32 min_service_int;
1594         __le32 max_service_int;
1595         __le32 inactivity_int;
1596         __le32 suspension_int;
1597         __le32 service_start_time;
1598         __le32 min_data_rate;
1599         __le32 mean_data_rate;
1600         __le32 peak_data_rate;
1601         __le32 max_burst_size;
1602         __le32 delay_bound;
1603         __le32 min_phy_rate;
1604         __le16 sba;
1605         __le16 medium_time;
1606 } __packed;
1607
1608 /**
1609  * ieee80211_get_qos_ctl - get pointer to qos control bytes
1610  * @hdr: the frame
1611  *
1612  * The qos ctrl bytes come after the frame_control, duration, seq_num
1613  * and 3 or 4 addresses of length ETH_ALEN.
1614  * 3 addr: 2 + 2 + 2 + 3*6 = 24
1615  * 4 addr: 2 + 2 + 2 + 4*6 = 30
1616  */
1617 static inline u8 *ieee80211_get_qos_ctl(struct ieee80211_hdr *hdr)
1618 {
1619         if (ieee80211_has_a4(hdr->frame_control))
1620                 return (u8 *)hdr + 30;
1621         else
1622                 return (u8 *)hdr + 24;
1623 }
1624
1625 /**
1626  * ieee80211_get_SA - get pointer to SA
1627  * @hdr: the frame
1628  *
1629  * Given an 802.11 frame, this function returns the offset
1630  * to the source address (SA). It does not verify that the
1631  * header is long enough to contain the address, and the
1632  * header must be long enough to contain the frame control
1633  * field.
1634  */
1635 static inline u8 *ieee80211_get_SA(struct ieee80211_hdr *hdr)
1636 {
1637         if (ieee80211_has_a4(hdr->frame_control))
1638                 return hdr->addr4;
1639         if (ieee80211_has_fromds(hdr->frame_control))
1640                 return hdr->addr3;
1641         return hdr->addr2;
1642 }
1643
1644 /**
1645  * ieee80211_get_DA - get pointer to DA
1646  * @hdr: the frame
1647  *
1648  * Given an 802.11 frame, this function returns the offset
1649  * to the destination address (DA). It does not verify that
1650  * the header is long enough to contain the address, and the
1651  * header must be long enough to contain the frame control
1652  * field.
1653  */
1654 static inline u8 *ieee80211_get_DA(struct ieee80211_hdr *hdr)
1655 {
1656         if (ieee80211_has_tods(hdr->frame_control))
1657                 return hdr->addr3;
1658         else
1659                 return hdr->addr1;
1660 }
1661
1662 /**
1663  * ieee80211_is_robust_mgmt_frame - check if frame is a robust management frame
1664  * @hdr: the frame (buffer must include at least the first octet of payload)
1665  */
1666 static inline bool ieee80211_is_robust_mgmt_frame(struct ieee80211_hdr *hdr)
1667 {
1668         if (ieee80211_is_disassoc(hdr->frame_control) ||
1669             ieee80211_is_deauth(hdr->frame_control))
1670                 return true;
1671
1672         if (ieee80211_is_action(hdr->frame_control)) {
1673                 u8 *category;
1674
1675                 /*
1676                  * Action frames, excluding Public Action frames, are Robust
1677                  * Management Frames. However, if we are looking at a Protected
1678                  * frame, skip the check since the data may be encrypted and
1679                  * the frame has already been found to be a Robust Management
1680                  * Frame (by the other end).
1681                  */
1682                 if (ieee80211_has_protected(hdr->frame_control))
1683                         return true;
1684                 category = ((u8 *) hdr) + 24;
1685                 return *category != WLAN_CATEGORY_PUBLIC &&
1686                         *category != WLAN_CATEGORY_HT &&
1687                         *category != WLAN_CATEGORY_SELF_PROTECTED &&
1688                         *category != WLAN_CATEGORY_VENDOR_SPECIFIC;
1689         }
1690
1691         return false;
1692 }
1693
1694 /**
1695  * ieee80211_fhss_chan_to_freq - get channel frequency
1696  * @channel: the FHSS channel
1697  *
1698  * Convert IEEE802.11 FHSS channel to frequency (MHz)
1699  * Ref IEEE 802.11-2007 section 14.6
1700  */
1701 static inline int ieee80211_fhss_chan_to_freq(int channel)
1702 {
1703         if ((channel > 1) && (channel < 96))
1704                 return channel + 2400;
1705         else
1706                 return -1;
1707 }
1708
1709 /**
1710  * ieee80211_freq_to_fhss_chan - get channel
1711  * @freq: the channels frequency
1712  *
1713  * Convert frequency (MHz) to IEEE802.11 FHSS channel
1714  * Ref IEEE 802.11-2007 section 14.6
1715  */
1716 static inline int ieee80211_freq_to_fhss_chan(int freq)
1717 {
1718         if ((freq > 2401) && (freq < 2496))
1719                 return freq - 2400;
1720         else
1721                 return -1;
1722 }
1723
1724 /**
1725  * ieee80211_dsss_chan_to_freq - get channel center frequency
1726  * @channel: the DSSS channel
1727  *
1728  * Convert IEEE802.11 DSSS channel to the center frequency (MHz).
1729  * Ref IEEE 802.11-2007 section 15.6
1730  */
1731 static inline int ieee80211_dsss_chan_to_freq(int channel)
1732 {
1733         if ((channel > 0) && (channel < 14))
1734                 return 2407 + (channel * 5);
1735         else if (channel == 14)
1736                 return 2484;
1737         else
1738                 return -1;
1739 }
1740
1741 /**
1742  * ieee80211_freq_to_dsss_chan - get channel
1743  * @freq: the frequency
1744  *
1745  * Convert frequency (MHz) to IEEE802.11 DSSS channel
1746  * Ref IEEE 802.11-2007 section 15.6
1747  *
1748  * This routine selects the channel with the closest center frequency.
1749  */
1750 static inline int ieee80211_freq_to_dsss_chan(int freq)
1751 {
1752         if ((freq >= 2410) && (freq < 2475))
1753                 return (freq - 2405) / 5;
1754         else if ((freq >= 2482) && (freq < 2487))
1755                 return 14;
1756         else
1757                 return -1;
1758 }
1759
1760 /* Convert IEEE802.11 HR DSSS channel to frequency (MHz) and back
1761  * Ref IEEE 802.11-2007 section 18.4.6.2
1762  *
1763  * The channels and frequencies are the same as those defined for DSSS
1764  */
1765 #define ieee80211_hr_chan_to_freq(chan) ieee80211_dsss_chan_to_freq(chan)
1766 #define ieee80211_freq_to_hr_chan(freq) ieee80211_freq_to_dsss_chan(freq)
1767
1768 /* Convert IEEE802.11 ERP channel to frequency (MHz) and back
1769  * Ref IEEE 802.11-2007 section 19.4.2
1770  */
1771 #define ieee80211_erp_chan_to_freq(chan) ieee80211_hr_chan_to_freq(chan)
1772 #define ieee80211_freq_to_erp_chan(freq) ieee80211_freq_to_hr_chan(freq)
1773
1774 /**
1775  * ieee80211_ofdm_chan_to_freq - get channel center frequency
1776  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1777  * @channel: the OFDM channel
1778  *
1779  * Convert IEEE802.11 OFDM channel to center frequency (MHz)
1780  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1781  */
1782 static inline int ieee80211_ofdm_chan_to_freq(int s_freq, int channel)
1783 {
1784         if ((channel > 0) && (channel <= 200) &&
1785             (s_freq >= 4000))
1786                 return s_freq + (channel * 5);
1787         else
1788                 return -1;
1789 }
1790
1791 /**
1792  * ieee80211_freq_to_ofdm_channel - get channel
1793  * @s_freq: starting frequency == (dotChannelStartingFactor/2) MHz
1794  * @freq: the frequency
1795  *
1796  * Convert frequency (MHz) to IEEE802.11 OFDM channel
1797  * Ref IEEE 802.11-2007 section 17.3.8.3.2
1798  *
1799  * This routine selects the channel with the closest center frequency.
1800  */
1801 static inline int ieee80211_freq_to_ofdm_chan(int s_freq, int freq)
1802 {
1803         if ((freq > (s_freq + 2)) && (freq <= (s_freq + 1202)) &&
1804             (s_freq >= 4000))
1805                 return (freq + 2 - s_freq) / 5;
1806         else
1807                 return -1;
1808 }
1809
1810 /**
1811  * ieee80211_tu_to_usec - convert time units (TU) to microseconds
1812  * @tu: the TUs
1813  */
1814 static inline unsigned long ieee80211_tu_to_usec(unsigned long tu)
1815 {
1816         return 1024 * tu;
1817 }
1818
1819 /**
1820  * ieee80211_check_tim - check if AID bit is set in TIM
1821  * @tim: the TIM IE
1822  * @tim_len: length of the TIM IE
1823  * @aid: the AID to look for
1824  */
1825 static inline bool ieee80211_check_tim(struct ieee80211_tim_ie *tim,
1826                                        u8 tim_len, u16 aid)
1827 {
1828         u8 mask;
1829         u8 index, indexn1, indexn2;
1830
1831         if (unlikely(!tim || tim_len < sizeof(*tim)))
1832                 return false;
1833
1834         aid &= 0x3fff;
1835         index = aid / 8;
1836         mask  = 1 << (aid & 7);
1837
1838         indexn1 = tim->bitmap_ctrl & 0xfe;
1839         indexn2 = tim_len + indexn1 - 4;
1840
1841         if (index < indexn1 || index > indexn2)
1842                 return false;
1843
1844         index -= indexn1;
1845
1846         return !!(tim->virtual_map[index] & mask);
1847 }
1848
1849 #endif /* LINUX_IEEE80211_H */