sys/net80211/ieee80211.h

   1 /*      $NetBSD: ieee80211.h,v 1.26 2013/03/30 14:14:31 christos Exp $  */
   2 /*-
   3  * Copyright (c) 2001 Atsushi Onoe
   4  * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * Alternatively, this software may be distributed under the terms of the
  19  * GNU General Public License ("GPL") version 2 as published by the Free
  20  * Software Foundation.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  * $FreeBSD: src/sys/net80211/ieee80211.h,v 1.10 2005/07/22 16:55:27 sam Exp $
  34  */
  35 #ifndef _NET80211_IEEE80211_H_
  36 #define _NET80211_IEEE80211_H_
  37
  38 /*
  39  * 802.11 protocol definitions.
  40  */
  41
  42 #define IEEE80211_ADDR_LEN      6               /* size of 802.11 address */
  43 /* is 802.11 address multicast/broadcast? */
  44 #define IEEE80211_IS_MULTICAST(_a)      (*(_a) & 0x01)
  45
  46 /* IEEE 802.11 PLCP header */
  47 struct ieee80211_plcp_hdr {
  48         u_int16_t       i_sfd;
  49         u_int8_t        i_signal;
  50         u_int8_t        i_service;
  51         u_int16_t       i_length;
  52         u_int16_t       i_crc;
  53 } __packed;
  54
  55 #define IEEE80211_PLCP_SFD      0xF3A0
  56 #define IEEE80211_PLCP_SERVICE  0x00
  57
  58 /*
  59  * generic definitions for IEEE 802.11 frames
  60  */
  61 struct ieee80211_frame {
  62         u_int8_t        i_fc[2];
  63         u_int8_t        i_dur[2];
  64         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
  65         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
  66         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
  67         u_int8_t        i_seq[2];
  68         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
  69         /* see below */
  70 } __packed;
  71
  72 struct ieee80211_qosframe {
  73         u_int8_t        i_fc[2];
  74         u_int8_t        i_dur[2];
  75         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
  76         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
  77         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
  78         u_int8_t        i_seq[2];
  79         u_int8_t        i_qos[2];
  80         /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */
  81         /* see below */
  82 } __packed;
  83
  84 struct ieee80211_qoscntl {
  85         u_int8_t        i_qos[2];
  86 };
  87
  88 struct ieee80211_frame_addr4 {
  89         u_int8_t        i_fc[2];
  90         u_int8_t        i_dur[2];
  91         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
  92         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
  93         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
  94         u_int8_t        i_seq[2];
  95         u_int8_t        i_addr4[IEEE80211_ADDR_LEN];
  96 } __packed;
  97
  98
  99 struct ieee80211_qosframe_addr4 {
 100         u_int8_t        i_fc[2];
 101         u_int8_t        i_dur[2];
 102         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
 103         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
 104         u_int8_t        i_addr3[IEEE80211_ADDR_LEN];
 105         u_int8_t        i_seq[2];
 106         u_int8_t        i_addr4[IEEE80211_ADDR_LEN];
 107         u_int8_t        i_qos[2];
 108 } __packed;
 109
 110 #define IEEE80211_FC0_VERSION_MASK              0x03
 111 #define IEEE80211_FC0_VERSION_SHIFT             0
 112 #define IEEE80211_FC0_VERSION_0                 0x00
 113 #define IEEE80211_FC0_TYPE_MASK                 0x0c
 114 #define IEEE80211_FC0_TYPE_SHIFT                2
 115 #define IEEE80211_FC0_TYPE_MGT                  0x00
 116 #define IEEE80211_FC0_TYPE_CTL                  0x04
 117 #define IEEE80211_FC0_TYPE_DATA                 0x08
 118
 119 #define IEEE80211_FC0_SUBTYPE_MASK              0xf0
 120 #define IEEE80211_FC0_SUBTYPE_SHIFT             4
 121 /* for TYPE_MGT */
 122 #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ         0x00
 123 #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP        0x10
 124 #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ       0x20
 125 #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP      0x30
 126 #define IEEE80211_FC0_SUBTYPE_PROBE_REQ         0x40
 127 #define IEEE80211_FC0_SUBTYPE_PROBE_RESP        0x50
 128 #define IEEE80211_FC0_SUBTYPE_BEACON            0x80
 129 #define IEEE80211_FC0_SUBTYPE_ATIM              0x90
 130 #define IEEE80211_FC0_SUBTYPE_DISASSOC          0xa0
 131 #define IEEE80211_FC0_SUBTYPE_AUTH              0xb0
 132 #define IEEE80211_FC0_SUBTYPE_DEAUTH            0xc0
 133 /* for TYPE_CTL */
 134 #define IEEE80211_FC0_SUBTYPE_PS_POLL           0xa0
 135 #define IEEE80211_FC0_SUBTYPE_RTS               0xb0
 136 #define IEEE80211_FC0_SUBTYPE_CTS               0xc0
 137 #define IEEE80211_FC0_SUBTYPE_ACK               0xd0
 138 #define IEEE80211_FC0_SUBTYPE_CF_END            0xe0
 139 #define IEEE80211_FC0_SUBTYPE_CF_END_ACK        0xf0
 140 /* for TYPE_DATA (bit combination) */
 141 #define IEEE80211_FC0_SUBTYPE_DATA              0x00
 142 #define IEEE80211_FC0_SUBTYPE_CF_ACK            0x10
 143 #define IEEE80211_FC0_SUBTYPE_CF_POLL           0x20
 144 #define IEEE80211_FC0_SUBTYPE_CF_ACPL           0x30
 145 #define IEEE80211_FC0_SUBTYPE_NODATA            0x40
 146 #define IEEE80211_FC0_SUBTYPE_CFACK             0x50
 147 #define IEEE80211_FC0_SUBTYPE_CFPOLL            0x60
 148 #define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK     0x70
 149 #define IEEE80211_FC0_SUBTYPE_QOS               0x80
 150 #define IEEE80211_FC0_SUBTYPE_QOS_NULL          0xc0
 151
 152 /*
 153  * DS bit usage
 154  *
 155  * TA = transmitter address
 156  * RA = receiver address
 157  * DA = destination address
 158  * SA = source address
 159  *
 160  * ToDS    FromDS  A1(RA)  A2(TA)  A3      A4      Use
 161  * -----------------------------------------------------------------
 162  *  0       0       DA      SA      BSSID   -       IBSS/DLS
 163  *  0       1       DA      BSSID   SA      -       AP -> STA
 164  *  1       0       BSSID   SA      DA      -       AP <- STA
 165  *  1       1       RA      TA      DA      SA      unspecified (WDS)
 166  */
 167 #define IEEE80211_FC1_DIR_MASK                  0x03
 168 #define IEEE80211_FC1_DIR_NODS                  0x00    /* STA->STA */
 169 #define IEEE80211_FC1_DIR_TODS                  0x01    /* STA->AP  */
 170 #define IEEE80211_FC1_DIR_FROMDS                0x02    /* AP ->STA */
 171 #define IEEE80211_FC1_DIR_DSTODS                0x03    /* AP ->AP  */
 172
 173 #define IEEE80211_FC1_MORE_FRAG                 0x04
 174 #define IEEE80211_FC1_RETRY                     0x08
 175 #define IEEE80211_FC1_PWR_MGT                   0x10
 176 #define IEEE80211_FC1_MORE_DATA                 0x20
 177 #define IEEE80211_FC1_PROTECTED                 0x40
 178 #define IEEE80211_FC1_WEP                       0x40    /* pre-RSNA compat */
 179 #define IEEE80211_FC1_ORDER                     0x80
 180
 181 #define IEEE80211_SEQ_FRAG_MASK                 0x000f
 182 #define IEEE80211_SEQ_FRAG_SHIFT                0
 183 #define IEEE80211_SEQ_SEQ_MASK                  0xfff0
 184 #define IEEE80211_SEQ_SEQ_SHIFT                 4
 185
 186 #define IEEE80211_NWID_LEN                      32
 187
 188 /*
 189  * QoS Control field (see 7.1.3.5).
 190  */
 191 /* bit 8 is reserved */
 192 #define IEEE80211_QOS_TXOP                      0xff00
 193 #define IEEE80211_QOS_AMSDU                     0x0080  /* 11n */
 194 #define IEEE80211_QOS_ACKPOLICY_NORMAL          0x0000
 195 #define IEEE80211_QOS_ACKPOLICY_NOACK           0x0020
 196 #define IEEE80211_QOS_ACKPOLICY_NOEXPLACK       0x0040
 197 #define IEEE80211_QOS_ACKPOLICY                 0x0060
 198 #define IEEE80211_QOS_ACKPOLICY_S               5
 199 #define IEEE80211_QOS_ACKPOLICY_MASK            0x0060
 200 #define IEEE80211_QOS_ACKPOLICY_BA              0x0060
 201 #define IEEE80211_QOS_ESOP                      0x0010
 202 #define IEEE80211_QOS_ESOP_S                    4
 203 #define IEEE80211_QOS_TID                       0x000f
 204
 205 /*
 206  * WME/802.11e information element.
 207  */
 208 struct ieee80211_wme_info {
 209         u_int8_t        wme_id;         /* IEEE80211_ELEMID_VENDOR */
 210         u_int8_t        wme_len;        /* length in bytes */
 211         u_int8_t        wme_oui[3];     /* 0x00, 0x50, 0xf2 */
 212         u_int8_t        wme_type;       /* OUI type */
 213         u_int8_t        wme_subtype;    /* OUI subtype */
 214         u_int8_t        wme_version;    /* spec revision */
 215         u_int8_t        wme_info;       /* QoS info */
 216 } __packed;
 217
 218 /*
 219  * WME/802.11e Tspec Element
 220  */
 221 struct ieee80211_wme_tspec {
 222         u_int8_t        ts_id;
 223         u_int8_t        ts_len;
 224         u_int8_t        ts_oui[3];
 225         u_int8_t        ts_oui_type;
 226         u_int8_t        ts_oui_subtype;
 227         u_int8_t        ts_version;
 228         u_int8_t        ts_tsinfo[3];
 229         u_int8_t        ts_nom_msdu[2];
 230         u_int8_t        ts_max_msdu[2];
 231         u_int8_t        ts_min_svc[4];
 232         u_int8_t        ts_max_svc[4];
 233         u_int8_t        ts_inactv_intv[4];
 234         u_int8_t        ts_susp_intv[4];
 235         u_int8_t        ts_start_svc[4];
 236         u_int8_t        ts_min_rate[4];
 237         u_int8_t        ts_mean_rate[4];
 238         u_int8_t        ts_max_burst[4];
 239         u_int8_t        ts_min_phy[4];
 240         u_int8_t        ts_peak_rate[4];
 241         u_int8_t        ts_delay[4];
 242         u_int8_t        ts_surplus[2];
 243         u_int8_t        ts_medium_time[2];
 244 } __packed;
 245
 246 /*
 247  * WME AC parameter field
 248  */
 249 struct ieee80211_wme_acparams {
 250         u_int8_t        acp_aci_aifsn;
 251         u_int8_t        acp_logcwminmax;
 252         u_int16_t       acp_txop;
 253 } __packed;
 254
 255 /* WME stream classes */
 256 enum ieee80211_wme_ac {
 257         WME_AC_BE       = 0,            /* best effort */
 258         WME_AC_BK       = 1,            /* background */
 259         WME_AC_VI       = 2,            /* video */
 260         WME_AC_VO       = 3,            /* voice */
 261 };
 262 #define WME_NUM_AC      4               /* 4 AC categories */
 263
 264 #define WME_PARAM_ACI           0x60    /* Mask for ACI field */
 265 #define WME_PARAM_ACI_S         5       /* Shift for ACI field */
 266 #define WME_PARAM_ACM           0x10    /* Mask for ACM bit */
 267 #define WME_PARAM_ACM_S         4       /* Shift for ACM bit */
 268 #define WME_PARAM_AIFSN         0x0f    /* Mask for aifsn field */
 269 #define WME_PARAM_AIFSN_S       0       /* Shift for aifsn field */
 270 #define WME_PARAM_LOGCWMIN      0x0f    /* Mask for CwMin field (in log) */
 271 #define WME_PARAM_LOGCWMIN_S    0       /* Shift for CwMin field */
 272 #define WME_PARAM_LOGCWMAX      0xf0    /* Mask for CwMax field (in log) */
 273 #define WME_PARAM_LOGCWMAX_S    4       /* Shift for CwMax field */
 274
 275 #define WME_AC_TO_TID(_ac) (       \
 276         ((_ac) == WME_AC_VO) ? 6 : \
 277         ((_ac) == WME_AC_VI) ? 5 : \
 278         ((_ac) == WME_AC_BK) ? 1 : \
 279         0)
 280
 281 #define TID_TO_WME_AC(_tid) (      \
 282         ((_tid) < 1) ? WME_AC_BE : \
 283         ((_tid) < 3) ? WME_AC_BK : \
 284         ((_tid) < 6) ? WME_AC_VI : \
 285         WME_AC_VO)
 286
 287 /*
 288  * WME Parameter Element
 289  */
 290 struct ieee80211_wme_param {
 291         u_int8_t        param_id;
 292         u_int8_t        param_len;
 293         u_int8_t        param_oui[3];
 294         u_int8_t        param_oui_type;
 295         u_int8_t        param_oui_sybtype;
 296         u_int8_t        param_version;
 297         u_int8_t        param_qosInfo;
 298 #define WME_QOSINFO_COUNT       0x0f    /* Mask for param count field */
 299         u_int8_t        param_reserved;
 300         struct ieee80211_wme_acparams   params_acParams[WME_NUM_AC];
 301 } __packed;
 302
 303 /*
 304  * Management Notification Frame
 305  */
 306 struct ieee80211_mnf {
 307         u_int8_t        mnf_category;
 308         u_int8_t        mnf_action;
 309         u_int8_t        mnf_dialog;
 310         u_int8_t        mnf_status;
 311 } __packed;
 312 #define MNF_SETUP_REQ   0
 313 #define MNF_SETUP_RESP  1
 314 #define MNF_TEARDOWN    2
 315
 316 /*
 317  * Control frames.
 318  */
 319 struct ieee80211_frame_min {
 320         u_int8_t        i_fc[2];
 321         u_int8_t        i_dur[2];
 322         u_int8_t        i_addr1[IEEE80211_ADDR_LEN];
 323         u_int8_t        i_addr2[IEEE80211_ADDR_LEN];
 324         /* FCS */
 325 } __packed;
 326
 327 struct ieee80211_frame_rts {
 328         u_int8_t        i_fc[2];
 329         u_int8_t        i_dur[2];
 330         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
 331         u_int8_t        i_ta[IEEE80211_ADDR_LEN];
 332         /* FCS */
 333 } __packed;
 334
 335 struct ieee80211_frame_cts {
 336         u_int8_t        i_fc[2];
 337         u_int8_t        i_dur[2];
 338         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
 339         /* FCS */
 340 } __packed;
 341
 342 struct ieee80211_frame_ack {
 343         u_int8_t        i_fc[2];
 344         u_int8_t        i_dur[2];
 345         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
 346         /* FCS */
 347 } __packed;
 348
 349 struct ieee80211_frame_pspoll {
 350         u_int8_t        i_fc[2];
 351         u_int8_t        i_aid[2];
 352         u_int8_t        i_bssid[IEEE80211_ADDR_LEN];
 353         u_int8_t        i_ta[IEEE80211_ADDR_LEN];
 354         /* FCS */
 355 } __packed;
 356
 357 struct ieee80211_frame_cfend {          /* NB: also CF-End+CF-Ack */
 358         u_int8_t        i_fc[2];
 359         u_int8_t        i_dur[2];       /* should be zero */
 360         u_int8_t        i_ra[IEEE80211_ADDR_LEN];
 361         u_int8_t        i_bssid[IEEE80211_ADDR_LEN];
 362         /* FCS */
 363 } __packed;
 364
 365 static __inline int
 366 ieee80211_has_seq(const struct ieee80211_frame *wh)
 367 {
 368         return (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) !=
 369             IEEE80211_FC0_TYPE_CTL;
 370 }
 371
 372 static __inline int
 373 ieee80211_has_addr4(const struct ieee80211_frame *wh)
 374 {
 375         return (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) ==
 376             IEEE80211_FC1_DIR_DSTODS;
 377 }
 378
 379 static __inline int
 380 ieee80211_has_qos(const struct ieee80211_frame *wh)
 381 {
 382         return (wh->i_fc[0] &
 383             (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) ==
 384             (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS);
 385 }
 386
 387 static __inline int
 388 ieee80211_has_htc(const struct ieee80211_frame *wh)
 389 {
 390         return (wh->i_fc[1] & IEEE80211_FC1_ORDER) &&
 391             (ieee80211_has_qos(wh) ||
 392              (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) ==
 393              IEEE80211_FC0_TYPE_MGT);
 394 }
 395
 396 static __inline u_int16_t
 397 ieee80211_get_qos(const struct ieee80211_frame *wh)
 398 {
 399         const u_int8_t *frm;
 400
 401         if (ieee80211_has_addr4(wh))
 402                 frm = ((const struct ieee80211_qosframe_addr4 *)wh)->i_qos;
 403         else
 404                 frm = ((const struct ieee80211_qosframe *)wh)->i_qos;
 405
 406         return le16toh(*(const u_int16_t *)frm);
 407 }
 408
 409 /*
 410  * BEACON management packets
 411  *
 412  *      octet timestamp[8]
 413  *      octet beacon interval[2]
 414  *      octet capability information[2]
 415  *      information element
 416  *              octet elemid
 417  *              octet length
 418  *              octet information[length]
 419  */
 420
 421 typedef u_int8_t *ieee80211_mgt_beacon_t;
 422
 423 #define IEEE80211_BEACON_INTERVAL(beacon) \
 424         ((beacon)[8] | ((beacon)[9] << 8))
 425 #define IEEE80211_BEACON_CAPABILITY(beacon) \
 426         ((beacon)[10] | ((beacon)[11] << 8))
 427
 428 #define IEEE80211_CAPINFO_ESS                   0x0001
 429 #define IEEE80211_CAPINFO_IBSS                  0x0002
 430 #define IEEE80211_CAPINFO_CF_POLLABLE           0x0004
 431 #define IEEE80211_CAPINFO_CF_POLLREQ            0x0008
 432 #define IEEE80211_CAPINFO_PRIVACY               0x0010
 433 #define IEEE80211_CAPINFO_SHORT_PREAMBLE        0x0020
 434 #define IEEE80211_CAPINFO_PBCC                  0x0040
 435 #define IEEE80211_CAPINFO_CHNL_AGILITY          0x0080
 436 /* bits 8-9 are reserved */
 437 #define IEEE80211_CAPINFO_SHORT_SLOTTIME        0x0400
 438 #define IEEE80211_CAPINFO_RSN                   0x0800
 439 /* bit 12 is reserved */
 440 #define IEEE80211_CAPINFO_DSSSOFDM              0x2000
 441 /* bits 14-15 are reserved */
 442
 443 /*
 444  * 802.11i/WPA information element (maximally sized).
 445  */
 446 struct ieee80211_ie_wpa {
 447         u_int8_t        wpa_id;         /* IEEE80211_ELEMID_VENDOR */
 448         u_int8_t        wpa_len;        /* length in bytes */
 449         u_int8_t        wpa_oui[3];     /* 0x00, 0x50, 0xf2 */
 450         u_int8_t        wpa_type;       /* OUI type */
 451         u_int16_t       wpa_version;    /* spec revision */
 452         u_int32_t       wpa_mcipher[1]; /* multicast/group key cipher */
 453         u_int16_t       wpa_uciphercnt; /* # pairwise key ciphers */
 454         u_int32_t       wpa_uciphers[8];/* ciphers */
 455         u_int16_t       wpa_authselcnt; /* authentication selector cnt*/
 456         u_int32_t       wpa_authsels[8];/* selectors */
 457         u_int16_t       wpa_caps;       /* 802.11i capabilities */
 458         u_int16_t       wpa_pmkidcnt;   /* 802.11i pmkid count */
 459         u_int16_t       wpa_pmkids[8];  /* 802.11i pmkids */
 460 } __packed;
 461
 462 /*
 463  * Management information element payloads.
 464  */
 465
 466 enum {
 467         IEEE80211_ELEMID_SSID           = 0,
 468         IEEE80211_ELEMID_RATES          = 1,
 469         IEEE80211_ELEMID_FHPARMS        = 2,
 470         IEEE80211_ELEMID_DSPARMS        = 3,
 471         IEEE80211_ELEMID_CFPARMS        = 4,
 472         IEEE80211_ELEMID_TIM            = 5,
 473         IEEE80211_ELEMID_IBSSPARMS      = 6,
 474         IEEE80211_ELEMID_COUNTRY        = 7,
 475         IEEE80211_ELEMID_EDCAPARMS      = 12,
 476         IEEE80211_ELEMID_CHALLENGE      = 16,
 477         /* 17-31 reserved for challenge text extension */
 478         IEEE80211_ELEMID_PWRCNSTR       = 32,
 479         IEEE80211_ELEMID_PWRCAP         = 33,
 480         IEEE80211_ELEMID_TPCREQ         = 34,
 481         IEEE80211_ELEMID_TPCREP         = 35,
 482         IEEE80211_ELEMID_SUPPCHAN       = 36,
 483         IEEE80211_ELEMID_CHANSWITCHANN  = 37,
 484         IEEE80211_ELEMID_MEASREQ        = 38,
 485         IEEE80211_ELEMID_MEASREP        = 39,
 486         IEEE80211_ELEMID_QUIET          = 40,
 487         IEEE80211_ELEMID_IBSSDFS        = 41,
 488         IEEE80211_ELEMID_ERP            = 42,
 489         IEEE80211_ELEMID_HTCAP          = 45,   /* 11n */
 490         IEEE80211_ELEMID_QOS_CAP        = 46,
 491         IEEE80211_ELEMID_RSN            = 48,
 492         IEEE80211_ELEMID_XRATES         = 50,
 493         IEEE80211_ELEMID_TIE            = 56,   /* 11r */
 494         IEEE80211_ELEMID_HTINFO         = 61,   /* 11n */
 495         IEEE80211_ELEMID_MMIE           = 76,   /* 11w */
 496         IEEE80211_ELEMID_TPC            = 150,
 497         IEEE80211_ELEMID_CCKM           = 156,
 498         IEEE80211_ELEMID_VENDOR         = 221   /* vendor private */
 499 };
 500
 501 struct ieee80211_tim_ie {
 502         u_int8_t        tim_ie;                 /* IEEE80211_ELEMID_TIM */
 503         u_int8_t        tim_len;
 504         u_int8_t        tim_count;              /* DTIM count */
 505         u_int8_t        tim_period;             /* DTIM period */
 506         u_int8_t        tim_bitctl;             /* bitmap control */
 507         u_int8_t        tim_bitmap[1];          /* variable-length bitmap */
 508 } __packed;
 509
 510 struct ieee80211_band {
 511         u_int8_t schan;                 /* starting channel */
 512         u_int8_t nchan;                 /* number channels */
 513         u_int8_t maxtxpwr;              /* tx power cap */
 514 } __packed;
 515
 516 struct ieee80211_country_ie {
 517         u_int8_t        ie;                     /* IEEE80211_ELEMID_COUNTRY */
 518         u_int8_t        len;
 519         u_int8_t        cc[3];                  /* ISO CC+(I)ndoor/(O)utdoor */
 520         struct ieee80211_band band[4];          /* up to 4 sub bands */
 521 } __packed;
 522
 523 #define IEEE80211_CHALLENGE_LEN         128
 524
 525 #define IEEE80211_RATE_BASIC            0x80
 526 #define IEEE80211_RATE_VAL              0x7f
 527
 528 /* EPR information element flags */
 529 #define IEEE80211_ERP_NON_ERP_PRESENT   0x01
 530 #define IEEE80211_ERP_USE_PROTECTION    0x02
 531 #define IEEE80211_ERP_LONG_PREAMBLE     0x04
 532
 533 /* Atheros private advanced capabilities info */
 534 #define ATHEROS_CAP_TURBO_PRIME         0x01
 535 #define ATHEROS_CAP_COMPRESSION         0x02
 536 #define ATHEROS_CAP_FAST_FRAME          0x04
 537 /* bits 3-6 reserved */
 538 #define ATHEROS_CAP_BOOST               0x80
 539
 540 #define ATH_OUI                 0x7f0300                /* Atheros OUI */
 541 #define ATH_OUI_TYPE            0x01
 542 #define ATH_OUI_VERSION         0x01
 543
 544 #define WPA_OUI                 0xf25000
 545 #define WPA_OUI_TYPE            0x01
 546 #define WPA_VERSION             1               /* current supported version */
 547
 548 #define WPA_CSE_NULL            0x00
 549 #define WPA_CSE_WEP40           0x01
 550 #define WPA_CSE_TKIP            0x02
 551 #define WPA_CSE_CCMP            0x04
 552 #define WPA_CSE_WEP104          0x05
 553
 554 #define WPA_ASE_NONE            0x00
 555 #define WPA_ASE_8021X_UNSPEC    0x01
 556 #define WPA_ASE_8021X_PSK       0x02
 557
 558 #define RSN_OUI                 0xac0f00
 559 #define RSN_VERSION             1               /* current supported version */
 560
 561 #define RSN_CSE_NULL            0x00
 562 #define RSN_CSE_WEP40           0x01
 563 #define RSN_CSE_TKIP            0x02
 564 #define RSN_CSE_WRAP            0x03
 565 #define RSN_CSE_CCMP            0x04
 566 #define RSN_CSE_WEP104          0x05
 567
 568 #define RSN_ASE_NONE            0x00
 569 #define RSN_ASE_8021X_UNSPEC    0x01
 570 #define RSN_ASE_8021X_PSK       0x02
 571
 572 #define RSN_CAP_PREAUTH         0x01
 573
 574 #define WME_OUI                 0xf25000
 575 #define WME_OUI_TYPE            0x02
 576 #define WME_INFO_OUI_SUBTYPE    0x00
 577 #define WME_PARAM_OUI_SUBTYPE   0x01
 578 #define WME_VERSION             1
 579
 580 /*
 581  * AUTH management packets
 582  *
 583  *      octet algo[2]
 584  *      octet seq[2]
 585  *      octet status[2]
 586  *      octet chal.id
 587  *      octet chal.length
 588  *      octet chal.text[253]
 589  */
 590
 591 typedef u_int8_t *ieee80211_mgt_auth_t;
 592
 593 #define IEEE80211_AUTH_ALGORITHM(auth) \
 594         ((auth)[0] | ((auth)[1] << 8))
 595 #define IEEE80211_AUTH_TRANSACTION(auth) \
 596         ((auth)[2] | ((auth)[3] << 8))
 597 #define IEEE80211_AUTH_STATUS(auth) \
 598         ((auth)[4] | ((auth)[5] << 8))
 599
 600 #define IEEE80211_AUTH_ALG_OPEN         0x0000
 601 #define IEEE80211_AUTH_ALG_SHARED       0x0001
 602 #define IEEE80211_AUTH_ALG_LEAP         0x0080
 603
 604 enum {
 605         IEEE80211_AUTH_OPEN_REQUEST             = 1,
 606         IEEE80211_AUTH_OPEN_RESPONSE            = 2
 607 };
 608
 609 enum {
 610         IEEE80211_AUTH_SHARED_REQUEST           = 1,
 611         IEEE80211_AUTH_SHARED_CHALLENGE         = 2,
 612         IEEE80211_AUTH_SHARED_RESPONSE          = 3,
 613         IEEE80211_AUTH_SHARED_PASS              = 4
 614 };
 615
 616 /*
 617  * Reason codes
 618  *
 619  * Unlisted codes are reserved
 620  */
 621
 622 enum {
 623         IEEE80211_REASON_UNSPECIFIED            = 1,
 624         IEEE80211_REASON_AUTH_EXPIRE            = 2,
 625         IEEE80211_REASON_AUTH_LEAVE             = 3,
 626         IEEE80211_REASON_ASSOC_EXPIRE           = 4,
 627         IEEE80211_REASON_ASSOC_TOOMANY          = 5,
 628         IEEE80211_REASON_NOT_AUTHED             = 6,
 629         IEEE80211_REASON_NOT_ASSOCED            = 7,
 630         IEEE80211_REASON_ASSOC_LEAVE            = 8,
 631         IEEE80211_REASON_ASSOC_NOT_AUTHED       = 9,
 632
 633         IEEE80211_REASON_RSN_REQUIRED           = 11,
 634         IEEE80211_REASON_RSN_INCONSISTENT       = 12,
 635         IEEE80211_REASON_IE_INVALID             = 13,
 636         IEEE80211_REASON_MIC_FAILURE            = 14,
 637
 638         IEEE80211_STATUS_SUCCESS                = 0,
 639         IEEE80211_STATUS_UNSPECIFIED            = 1,
 640         IEEE80211_STATUS_CAPINFO                = 10,
 641         IEEE80211_STATUS_NOT_ASSOCED            = 11,
 642         IEEE80211_STATUS_OTHER                  = 12,
 643         IEEE80211_STATUS_ALG                    = 13,
 644         IEEE80211_STATUS_SEQUENCE               = 14,
 645         IEEE80211_STATUS_CHALLENGE              = 15,
 646         IEEE80211_STATUS_TIMEOUT                = 16,
 647         IEEE80211_STATUS_TOOMANY                = 17,
 648         IEEE80211_STATUS_BASIC_RATE             = 18,
 649         IEEE80211_STATUS_SP_REQUIRED            = 19,
 650         IEEE80211_STATUS_PBCC_REQUIRED          = 20,
 651         IEEE80211_STATUS_CA_REQUIRED            = 21,
 652         IEEE80211_STATUS_TOO_MANY_STATIONS      = 22,
 653         IEEE80211_STATUS_RATES                  = 23,
 654         IEEE80211_STATUS_SHORTSLOT_REQUIRED     = 25,
 655         IEEE80211_STATUS_DSSSOFDM_REQUIRED      = 26
 656 };
 657
 658 #define IEEE80211_WEP_KEYLEN            5       /* 40bit */
 659 #define IEEE80211_WEP_IVLEN             3       /* 24bit */
 660 #define IEEE80211_WEP_KIDLEN            1       /* 1 octet */
 661 #define IEEE80211_WEP_CRCLEN            4       /* CRC-32 */
 662 #define IEEE80211_WEP_TOTLEN            (IEEE80211_WEP_IVLEN + \
 663                                          IEEE80211_WEP_KIDLEN + \
 664                                          IEEE80211_WEP_CRCLEN)
 665 #define IEEE80211_WEP_NKID              4       /* number of key ids */
 666
 667 /*
 668  * 802.11i defines an extended IV for use with non-WEP ciphers.
 669  * When the EXTIV bit is set in the key id byte an additional
 670  * 4 bytes immediately follow the IV for TKIP.  For CCMP the
 671  * EXTIV bit is likewise set but the 8 bytes represent the
 672  * CCMP header rather than IV+extended-IV.
 673  */
 674 #define IEEE80211_WEP_EXTIV             0x20
 675 #define IEEE80211_WEP_EXTIVLEN          4       /* extended IV length */
 676 #define IEEE80211_WEP_MICLEN            8       /* trailing MIC */
 677
 678 #define IEEE80211_CRC_LEN               4
 679
 680 /*
 681  * Maximum acceptable MTU is:
 682  *      IEEE80211_MAX_LEN - WEP overhead - CRC -
 683  *              QoS overhead - RSN/WPA overhead
 684  * Min is arbitrarily chosen > IEEE80211_MIN_LEN.  The default
 685  * mtu is Ethernet-compatible; it's set by ether_ifattach.
 686  */
 687 #define IEEE80211_MTU_MAX               2290
 688 #define IEEE80211_MTU_MIN               32
 689
 690 #define IEEE80211_MAX_LEN               (2300 + IEEE80211_CRC_LEN + \
 691     (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN))
 692 #define IEEE80211_ACK_LEN \
 693         (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN)
 694 #define IEEE80211_MIN_LEN \
 695         (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN)
 696
 697 /*
 698  * The 802.11 spec says at most 2007 stations may be
 699  * associated at once.  For most AP's this is way more
 700  * than is feasible so we use a default of 128.  This
 701  * number may be overridden by the driver and/or by
 702  * user configuration.
 703  */
 704 #define IEEE80211_AID_MAX               2007
 705 #define IEEE80211_AID_DEF               128
 706
 707 #define IEEE80211_AID(b)        ((b) &~ 0xc000)
 708
 709 /*
 710  * RTS frame length parameters.  The default is specified in
 711  * the 802.11 spec as 512; we treat it as implementation-dependent
 712  * so it's defined in ieee80211_var.h.  The max may be wrong
 713  * for jumbo frames.
 714  */
 715 #define IEEE80211_RTS_MIN               1
 716 #define IEEE80211_RTS_MAX               2346
 717
 718 /*
 719  * TX fragmentation parameters.  As above for RTS, we treat
 720  * default as implementation-dependent so define it elsewhere.
 721  */
 722 #define IEEE80211_FRAG_MIN              256
 723 #define IEEE80211_FRAG_MAX              2346
 724
 725 /*
 726  * 802.11 frame duration definitions.
 727  */
 728
 729 struct ieee80211_duration {
 730         uint16_t        d_rts_dur;
 731         uint16_t        d_data_dur;
 732         uint16_t        d_plcp_len;
 733         uint8_t         d_residue;      /* unused octets in time slot */
 734 };
 735
 736 /* One Time Unit (TU) is 1Kus = 1024 microseconds. */
 737 #define IEEE80211_DUR_TU                1024
 738
 739 /* IEEE 802.11b durations for DSSS PHY in microseconds */
 740 #define IEEE80211_DUR_DS_LONG_PREAMBLE  144
 741 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72
 742
 743 #define IEEE80211_DUR_DS_SLOW_PLCPHDR   48
 744 #define IEEE80211_DUR_DS_FAST_PLCPHDR   24
 745 #define IEEE80211_DUR_DS_SLOW_ACK       112
 746 #define IEEE80211_DUR_DS_FAST_ACK       56
 747 #define IEEE80211_DUR_DS_SLOW_CTS       112
 748 #define IEEE80211_DUR_DS_FAST_CTS       56
 749
 750 #define IEEE80211_DUR_DS_SLOT           20
 751 #define IEEE80211_DUR_DS_SIFS           10
 752 #define IEEE80211_DUR_DS_PIFS   (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT)
 753 #define IEEE80211_DUR_DS_DIFS   (IEEE80211_DUR_DS_SIFS + \
 754                                  2 * IEEE80211_DUR_DS_SLOT)
 755 #define IEEE80211_DUR_DS_EIFS   (IEEE80211_DUR_DS_SIFS + \
 756                                  IEEE80211_DUR_DS_SLOW_ACK + \
 757                                  IEEE80211_DUR_DS_LONG_PREAMBLE + \
 758                                  IEEE80211_DUR_DS_SLOW_PLCPHDR + \
 759                                  IEEE80211_DUR_DS_DIFS)
 760
 761
 762 #endif /* !_NET80211_IEEE80211_H_ */