1 /* $NetBSD: ieee80211.h,v 1.27 2016/04/27 20:17:00 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_htframe { /* 11n */ 85 u_int8_t i_fc[2]; 86 u_int8_t i_dur[2]; 87 u_int8_t i_addr1[IEEE80211_ADDR_LEN]; 88 u_int8_t i_addr2[IEEE80211_ADDR_LEN]; 89 u_int8_t i_addr3[IEEE80211_ADDR_LEN]; 90 u_int8_t i_seq[2]; 91 u_int8_t i_qos[2]; 92 u_int8_t i_ht[4]; 93 } __packed; 94 95 struct ieee80211_qoscntl { 96 u_int8_t i_qos[2]; 97 }; 98 99 struct ieee80211_frame_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 } __packed; 108 109 110 struct ieee80211_qosframe_addr4 { 111 u_int8_t i_fc[2]; 112 u_int8_t i_dur[2]; 113 u_int8_t i_addr1[IEEE80211_ADDR_LEN]; 114 u_int8_t i_addr2[IEEE80211_ADDR_LEN]; 115 u_int8_t i_addr3[IEEE80211_ADDR_LEN]; 116 u_int8_t i_seq[2]; 117 u_int8_t i_addr4[IEEE80211_ADDR_LEN]; 118 u_int8_t i_qos[2]; 119 } __packed; 120 121 #define IEEE80211_FC0_VERSION_MASK 0x03 122 #define IEEE80211_FC0_VERSION_SHIFT 0 123 #define IEEE80211_FC0_VERSION_0 0x00 124 #define IEEE80211_FC0_TYPE_MASK 0x0c 125 #define IEEE80211_FC0_TYPE_SHIFT 2 126 #define IEEE80211_FC0_TYPE_MGT 0x00 127 #define IEEE80211_FC0_TYPE_CTL 0x04 128 #define IEEE80211_FC0_TYPE_DATA 0x08 129 130 #define IEEE80211_FC0_SUBTYPE_MASK 0xf0 131 #define IEEE80211_FC0_SUBTYPE_SHIFT 4 132 /* for TYPE_MGT */ 133 #define IEEE80211_FC0_SUBTYPE_ASSOC_REQ 0x00 134 #define IEEE80211_FC0_SUBTYPE_ASSOC_RESP 0x10 135 #define IEEE80211_FC0_SUBTYPE_REASSOC_REQ 0x20 136 #define IEEE80211_FC0_SUBTYPE_REASSOC_RESP 0x30 137 #define IEEE80211_FC0_SUBTYPE_PROBE_REQ 0x40 138 #define IEEE80211_FC0_SUBTYPE_PROBE_RESP 0x50 139 #define IEEE80211_FC0_SUBTYPE_BEACON 0x80 140 #define IEEE80211_FC0_SUBTYPE_ATIM 0x90 141 #define IEEE80211_FC0_SUBTYPE_DISASSOC 0xa0 142 #define IEEE80211_FC0_SUBTYPE_AUTH 0xb0 143 #define IEEE80211_FC0_SUBTYPE_DEAUTH 0xc0 144 /* for TYPE_CTL */ 145 #define IEEE80211_FC0_SUBTYPE_PS_POLL 0xa0 146 #define IEEE80211_FC0_SUBTYPE_RTS 0xb0 147 #define IEEE80211_FC0_SUBTYPE_CTS 0xc0 148 #define IEEE80211_FC0_SUBTYPE_ACK 0xd0 149 #define IEEE80211_FC0_SUBTYPE_CF_END 0xe0 150 #define IEEE80211_FC0_SUBTYPE_CF_END_ACK 0xf0 151 /* for TYPE_DATA (bit combination) */ 152 #define IEEE80211_FC0_SUBTYPE_DATA 0x00 153 #define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10 154 #define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20 155 #define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30 156 #define IEEE80211_FC0_SUBTYPE_NODATA 0x40 157 #define IEEE80211_FC0_SUBTYPE_CFACK 0x50 158 #define IEEE80211_FC0_SUBTYPE_CFPOLL 0x60 159 #define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK 0x70 160 #define IEEE80211_FC0_SUBTYPE_QOS 0x80 161 #define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 162 163 /* 164 * DS bit usage 165 * 166 * TA = transmitter address 167 * RA = receiver address 168 * DA = destination address 169 * SA = source address 170 * 171 * ToDS FromDS A1(RA) A2(TA) A3 A4 Use 172 * ----------------------------------------------------------------- 173 * 0 0 DA SA BSSID - IBSS/DLS 174 * 0 1 DA BSSID SA - AP -> STA 175 * 1 0 BSSID SA DA - AP <- STA 176 * 1 1 RA TA DA SA unspecified (WDS) 177 */ 178 #define IEEE80211_FC1_DIR_MASK 0x03 179 #define IEEE80211_FC1_DIR_NODS 0x00 /* STA->STA */ 180 #define IEEE80211_FC1_DIR_TODS 0x01 /* STA->AP */ 181 #define IEEE80211_FC1_DIR_FROMDS 0x02 /* AP ->STA */ 182 #define IEEE80211_FC1_DIR_DSTODS 0x03 /* AP ->AP */ 183 184 #define IEEE80211_FC1_MORE_FRAG 0x04 185 #define IEEE80211_FC1_RETRY 0x08 186 #define IEEE80211_FC1_PWR_MGT 0x10 187 #define IEEE80211_FC1_MORE_DATA 0x20 188 #define IEEE80211_FC1_PROTECTED 0x40 189 #define IEEE80211_FC1_WEP 0x40 /* pre-RSNA compat */ 190 #define IEEE80211_FC1_ORDER 0x80 191 192 #define IEEE80211_SEQ_FRAG_MASK 0x000f 193 #define IEEE80211_SEQ_FRAG_SHIFT 0 194 #define IEEE80211_SEQ_SEQ_MASK 0xfff0 195 #define IEEE80211_SEQ_SEQ_SHIFT 4 196 197 #define IEEE80211_NWID_LEN 32 198 199 /* 200 * QoS Control field (see 7.1.3.5). 201 */ 202 /* bit 8 is reserved */ 203 #define IEEE80211_QOS_TXOP 0xff00 204 #define IEEE80211_QOS_AMSDU 0x0080 /* 11n */ 205 #define IEEE80211_QOS_ACKPOLICY_NORMAL 0x0000 206 #define IEEE80211_QOS_ACKPOLICY_NOACK 0x0020 207 #define IEEE80211_QOS_ACKPOLICY_NOEXPLACK 0x0040 208 #define IEEE80211_QOS_ACKPOLICY 0x0060 209 #define IEEE80211_QOS_ACKPOLICY_S 5 210 #define IEEE80211_QOS_ACKPOLICY_MASK 0x0060 211 #define IEEE80211_QOS_ACKPOLICY_BA 0x0060 212 #define IEEE80211_QOS_ESOP 0x0010 213 #define IEEE80211_QOS_ESOP_S 4 214 #define IEEE80211_QOS_TID 0x000f 215 216 /* 217 * WME/802.11e information element. 218 */ 219 struct ieee80211_wme_info { 220 u_int8_t wme_id; /* IEEE80211_ELEMID_VENDOR */ 221 u_int8_t wme_len; /* length in bytes */ 222 u_int8_t wme_oui[3]; /* 0x00, 0x50, 0xf2 */ 223 u_int8_t wme_type; /* OUI type */ 224 u_int8_t wme_subtype; /* OUI subtype */ 225 u_int8_t wme_version; /* spec revision */ 226 u_int8_t wme_info; /* QoS info */ 227 } __packed; 228 229 /* 230 * WME/802.11e Tspec Element 231 */ 232 struct ieee80211_wme_tspec { 233 u_int8_t ts_id; 234 u_int8_t ts_len; 235 u_int8_t ts_oui[3]; 236 u_int8_t ts_oui_type; 237 u_int8_t ts_oui_subtype; 238 u_int8_t ts_version; 239 u_int8_t ts_tsinfo[3]; 240 u_int8_t ts_nom_msdu[2]; 241 u_int8_t ts_max_msdu[2]; 242 u_int8_t ts_min_svc[4]; 243 u_int8_t ts_max_svc[4]; 244 u_int8_t ts_inactv_intv[4]; 245 u_int8_t ts_susp_intv[4]; 246 u_int8_t ts_start_svc[4]; 247 u_int8_t ts_min_rate[4]; 248 u_int8_t ts_mean_rate[4]; 249 u_int8_t ts_max_burst[4]; 250 u_int8_t ts_min_phy[4]; 251 u_int8_t ts_peak_rate[4]; 252 u_int8_t ts_delay[4]; 253 u_int8_t ts_surplus[2]; 254 u_int8_t ts_medium_time[2]; 255 } __packed; 256 257 /* 258 * WME AC parameter field 259 */ 260 struct ieee80211_wme_acparams { 261 u_int8_t acp_aci_aifsn; 262 u_int8_t acp_logcwminmax; 263 u_int16_t acp_txop; 264 } __packed; 265 266 /* WME stream classes */ 267 enum ieee80211_wme_ac { 268 WME_AC_BE = 0, /* best effort */ 269 WME_AC_BK = 1, /* background */ 270 WME_AC_VI = 2, /* video */ 271 WME_AC_VO = 3, /* voice */ 272 }; 273 #define WME_NUM_AC 4 /* 4 AC categories */ 274 275 #define WME_PARAM_ACI 0x60 /* Mask for ACI field */ 276 #define WME_PARAM_ACI_S 5 /* Shift for ACI field */ 277 #define WME_PARAM_ACM 0x10 /* Mask for ACM bit */ 278 #define WME_PARAM_ACM_S 4 /* Shift for ACM bit */ 279 #define WME_PARAM_AIFSN 0x0f /* Mask for aifsn field */ 280 #define WME_PARAM_AIFSN_S 0 /* Shift for aifsn field */ 281 #define WME_PARAM_LOGCWMIN 0x0f /* Mask for CwMin field (in log) */ 282 #define WME_PARAM_LOGCWMIN_S 0 /* Shift for CwMin field */ 283 #define WME_PARAM_LOGCWMAX 0xf0 /* Mask for CwMax field (in log) */ 284 #define WME_PARAM_LOGCWMAX_S 4 /* Shift for CwMax field */ 285 286 #define WME_AC_TO_TID(_ac) ( \ 287 ((_ac) == WME_AC_VO) ? 6 : \ 288 ((_ac) == WME_AC_VI) ? 5 : \ 289 ((_ac) == WME_AC_BK) ? 1 : \ 290 0) 291 292 #define TID_TO_WME_AC(_tid) ( \ 293 ((_tid) < 1) ? WME_AC_BE : \ 294 ((_tid) < 3) ? WME_AC_BK : \ 295 ((_tid) < 6) ? WME_AC_VI : \ 296 WME_AC_VO) 297 298 /* 299 * WME Parameter Element 300 */ 301 struct ieee80211_wme_param { 302 u_int8_t param_id; 303 u_int8_t param_len; 304 u_int8_t param_oui[3]; 305 u_int8_t param_oui_type; 306 u_int8_t param_oui_sybtype; 307 u_int8_t param_version; 308 u_int8_t param_qosInfo; 309 #define WME_QOSINFO_COUNT 0x0f /* Mask for param count field */ 310 u_int8_t param_reserved; 311 struct ieee80211_wme_acparams params_acParams[WME_NUM_AC]; 312 } __packed; 313 314 /* 315 * Management Notification Frame 316 */ 317 struct ieee80211_mnf { 318 u_int8_t mnf_category; 319 u_int8_t mnf_action; 320 u_int8_t mnf_dialog; 321 u_int8_t mnf_status; 322 } __packed; 323 #define MNF_SETUP_REQ 0 324 #define MNF_SETUP_RESP 1 325 #define MNF_TEARDOWN 2 326 327 /* 328 * Control frames. 329 */ 330 struct ieee80211_frame_min { 331 u_int8_t i_fc[2]; 332 u_int8_t i_dur[2]; 333 u_int8_t i_addr1[IEEE80211_ADDR_LEN]; 334 u_int8_t i_addr2[IEEE80211_ADDR_LEN]; 335 /* FCS */ 336 } __packed; 337 338 struct ieee80211_frame_rts { 339 u_int8_t i_fc[2]; 340 u_int8_t i_dur[2]; 341 u_int8_t i_ra[IEEE80211_ADDR_LEN]; 342 u_int8_t i_ta[IEEE80211_ADDR_LEN]; 343 /* FCS */ 344 } __packed; 345 346 struct ieee80211_frame_cts { 347 u_int8_t i_fc[2]; 348 u_int8_t i_dur[2]; 349 u_int8_t i_ra[IEEE80211_ADDR_LEN]; 350 /* FCS */ 351 } __packed; 352 353 struct ieee80211_frame_ack { 354 u_int8_t i_fc[2]; 355 u_int8_t i_dur[2]; 356 u_int8_t i_ra[IEEE80211_ADDR_LEN]; 357 /* FCS */ 358 } __packed; 359 360 struct ieee80211_frame_pspoll { 361 u_int8_t i_fc[2]; 362 u_int8_t i_aid[2]; 363 u_int8_t i_bssid[IEEE80211_ADDR_LEN]; 364 u_int8_t i_ta[IEEE80211_ADDR_LEN]; 365 /* FCS */ 366 } __packed; 367 368 struct ieee80211_frame_cfend { /* NB: also CF-End+CF-Ack */ 369 u_int8_t i_fc[2]; 370 u_int8_t i_dur[2]; /* should be zero */ 371 u_int8_t i_ra[IEEE80211_ADDR_LEN]; 372 u_int8_t i_bssid[IEEE80211_ADDR_LEN]; 373 /* FCS */ 374 } __packed; 375 376 static __inline int 377 ieee80211_has_seq(const struct ieee80211_frame *wh) 378 { 379 return (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != 380 IEEE80211_FC0_TYPE_CTL; 381 } 382 383 static __inline int 384 ieee80211_has_addr4(const struct ieee80211_frame *wh) 385 { 386 return (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) == 387 IEEE80211_FC1_DIR_DSTODS; 388 } 389 390 static __inline int 391 ieee80211_has_qos(const struct ieee80211_frame *wh) 392 { 393 return (wh->i_fc[0] & 394 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == 395 (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS); 396 } 397 398 static __inline int 399 ieee80211_has_htc(const struct ieee80211_frame *wh) 400 { 401 return (wh->i_fc[1] & IEEE80211_FC1_ORDER) && 402 (ieee80211_has_qos(wh) || 403 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 404 IEEE80211_FC0_TYPE_MGT); 405 } 406 407 static __inline u_int16_t 408 ieee80211_get_qos(const struct ieee80211_frame *wh) 409 { 410 const u_int8_t *frm; 411 412 if (ieee80211_has_addr4(wh)) 413 frm = ((const struct ieee80211_qosframe_addr4 *)wh)->i_qos; 414 else 415 frm = ((const struct ieee80211_qosframe *)wh)->i_qos; 416 417 return le16toh(*(const u_int16_t *)frm); 418 } 419 420 /* 421 * BEACON management packets 422 * 423 * octet timestamp[8] 424 * octet beacon interval[2] 425 * octet capability information[2] 426 * information element 427 * octet elemid 428 * octet length 429 * octet information[length] 430 */ 431 432 typedef u_int8_t *ieee80211_mgt_beacon_t; 433 434 #define IEEE80211_BEACON_INTERVAL(beacon) \ 435 ((beacon)[8] | ((beacon)[9] << 8)) 436 #define IEEE80211_BEACON_CAPABILITY(beacon) \ 437 ((beacon)[10] | ((beacon)[11] << 8)) 438 439 #define IEEE80211_CAPINFO_ESS 0x0001 440 #define IEEE80211_CAPINFO_IBSS 0x0002 441 #define IEEE80211_CAPINFO_CF_POLLABLE 0x0004 442 #define IEEE80211_CAPINFO_CF_POLLREQ 0x0008 443 #define IEEE80211_CAPINFO_PRIVACY 0x0010 444 #define IEEE80211_CAPINFO_SHORT_PREAMBLE 0x0020 445 #define IEEE80211_CAPINFO_PBCC 0x0040 446 #define IEEE80211_CAPINFO_CHNL_AGILITY 0x0080 447 /* bits 8-9 are reserved */ 448 #define IEEE80211_CAPINFO_SHORT_SLOTTIME 0x0400 449 #define IEEE80211_CAPINFO_RSN 0x0800 450 /* bit 12 is reserved */ 451 #define IEEE80211_CAPINFO_DSSSOFDM 0x2000 452 /* bits 14-15 are reserved */ 453 454 /* 455 * 802.11i/WPA information element (maximally sized). 456 */ 457 struct ieee80211_ie_wpa { 458 u_int8_t wpa_id; /* IEEE80211_ELEMID_VENDOR */ 459 u_int8_t wpa_len; /* length in bytes */ 460 u_int8_t wpa_oui[3]; /* 0x00, 0x50, 0xf2 */ 461 u_int8_t wpa_type; /* OUI type */ 462 u_int16_t wpa_version; /* spec revision */ 463 u_int32_t wpa_mcipher[1]; /* multicast/group key cipher */ 464 u_int16_t wpa_uciphercnt; /* # pairwise key ciphers */ 465 u_int32_t wpa_uciphers[8];/* ciphers */ 466 u_int16_t wpa_authselcnt; /* authentication selector cnt*/ 467 u_int32_t wpa_authsels[8];/* selectors */ 468 u_int16_t wpa_caps; /* 802.11i capabilities */ 469 u_int16_t wpa_pmkidcnt; /* 802.11i pmkid count */ 470 u_int16_t wpa_pmkids[8]; /* 802.11i pmkids */ 471 } __packed; 472 473 /* 474 * Management information element payloads. 475 */ 476 477 enum { 478 IEEE80211_ELEMID_SSID = 0, 479 IEEE80211_ELEMID_RATES = 1, 480 IEEE80211_ELEMID_FHPARMS = 2, 481 IEEE80211_ELEMID_DSPARMS = 3, 482 IEEE80211_ELEMID_CFPARMS = 4, 483 IEEE80211_ELEMID_TIM = 5, 484 IEEE80211_ELEMID_IBSSPARMS = 6, 485 IEEE80211_ELEMID_COUNTRY = 7, 486 IEEE80211_ELEMID_EDCAPARMS = 12, 487 IEEE80211_ELEMID_CHALLENGE = 16, 488 /* 17-31 reserved for challenge text extension */ 489 IEEE80211_ELEMID_PWRCNSTR = 32, 490 IEEE80211_ELEMID_PWRCAP = 33, 491 IEEE80211_ELEMID_TPCREQ = 34, 492 IEEE80211_ELEMID_TPCREP = 35, 493 IEEE80211_ELEMID_SUPPCHAN = 36, 494 IEEE80211_ELEMID_CHANSWITCHANN = 37, 495 IEEE80211_ELEMID_MEASREQ = 38, 496 IEEE80211_ELEMID_MEASREP = 39, 497 IEEE80211_ELEMID_QUIET = 40, 498 IEEE80211_ELEMID_IBSSDFS = 41, 499 IEEE80211_ELEMID_ERP = 42, 500 IEEE80211_ELEMID_HTCAP = 45, /* 11n */ 501 IEEE80211_ELEMID_QOS_CAP = 46, 502 IEEE80211_ELEMID_RSN = 48, 503 IEEE80211_ELEMID_XRATES = 50, 504 IEEE80211_ELEMID_TIE = 56, /* 11r */ 505 IEEE80211_ELEMID_HTINFO = 61, /* 11n */ 506 IEEE80211_ELEMID_MMIE = 76, /* 11w */ 507 IEEE80211_ELEMID_TPC = 150, 508 IEEE80211_ELEMID_CCKM = 156, 509 IEEE80211_ELEMID_VENDOR = 221 /* vendor private */ 510 }; 511 512 struct ieee80211_tim_ie { 513 u_int8_t tim_ie; /* IEEE80211_ELEMID_TIM */ 514 u_int8_t tim_len; 515 u_int8_t tim_count; /* DTIM count */ 516 u_int8_t tim_period; /* DTIM period */ 517 u_int8_t tim_bitctl; /* bitmap control */ 518 u_int8_t tim_bitmap[1]; /* variable-length bitmap */ 519 } __packed; 520 521 struct ieee80211_band { 522 u_int8_t schan; /* starting channel */ 523 u_int8_t nchan; /* number channels */ 524 u_int8_t maxtxpwr; /* tx power cap */ 525 } __packed; 526 527 struct ieee80211_country_ie { 528 u_int8_t ie; /* IEEE80211_ELEMID_COUNTRY */ 529 u_int8_t len; 530 u_int8_t cc[3]; /* ISO CC+(I)ndoor/(O)utdoor */ 531 struct ieee80211_band band[4]; /* up to 4 sub bands */ 532 } __packed; 533 534 #define IEEE80211_CHALLENGE_LEN 128 535 536 #define IEEE80211_RATE_BASIC 0x80 537 #define IEEE80211_RATE_VAL 0x7f 538 539 /* EPR information element flags */ 540 #define IEEE80211_ERP_NON_ERP_PRESENT 0x01 541 #define IEEE80211_ERP_USE_PROTECTION 0x02 542 #define IEEE80211_ERP_LONG_PREAMBLE 0x04 543 544 /* Atheros private advanced capabilities info */ 545 #define ATHEROS_CAP_TURBO_PRIME 0x01 546 #define ATHEROS_CAP_COMPRESSION 0x02 547 #define ATHEROS_CAP_FAST_FRAME 0x04 548 /* bits 3-6 reserved */ 549 #define ATHEROS_CAP_BOOST 0x80 550 551 #define ATH_OUI 0x7f0300 /* Atheros OUI */ 552 #define ATH_OUI_TYPE 0x01 553 #define ATH_OUI_VERSION 0x01 554 555 #define WPA_OUI 0xf25000 556 #define WPA_OUI_TYPE 0x01 557 #define WPA_VERSION 1 /* current supported version */ 558 559 #define WPA_CSE_NULL 0x00 560 #define WPA_CSE_WEP40 0x01 561 #define WPA_CSE_TKIP 0x02 562 #define WPA_CSE_CCMP 0x04 563 #define WPA_CSE_WEP104 0x05 564 565 #define WPA_ASE_NONE 0x00 566 #define WPA_ASE_8021X_UNSPEC 0x01 567 #define WPA_ASE_8021X_PSK 0x02 568 569 #define RSN_OUI 0xac0f00 570 #define RSN_VERSION 1 /* current supported version */ 571 572 #define RSN_CSE_NULL 0x00 573 #define RSN_CSE_WEP40 0x01 574 #define RSN_CSE_TKIP 0x02 575 #define RSN_CSE_WRAP 0x03 576 #define RSN_CSE_CCMP 0x04 577 #define RSN_CSE_WEP104 0x05 578 579 #define RSN_ASE_NONE 0x00 580 #define RSN_ASE_8021X_UNSPEC 0x01 581 #define RSN_ASE_8021X_PSK 0x02 582 583 #define RSN_CAP_PREAUTH 0x01 584 585 #define WME_OUI 0xf25000 586 #define WME_OUI_TYPE 0x02 587 #define WME_INFO_OUI_SUBTYPE 0x00 588 #define WME_PARAM_OUI_SUBTYPE 0x01 589 #define WME_VERSION 1 590 591 /* 592 * AUTH management packets 593 * 594 * octet algo[2] 595 * octet seq[2] 596 * octet status[2] 597 * octet chal.id 598 * octet chal.length 599 * octet chal.text[253] 600 */ 601 602 typedef u_int8_t *ieee80211_mgt_auth_t; 603 604 #define IEEE80211_AUTH_ALGORITHM(auth) \ 605 ((auth)[0] | ((auth)[1] << 8)) 606 #define IEEE80211_AUTH_TRANSACTION(auth) \ 607 ((auth)[2] | ((auth)[3] << 8)) 608 #define IEEE80211_AUTH_STATUS(auth) \ 609 ((auth)[4] | ((auth)[5] << 8)) 610 611 #define IEEE80211_AUTH_ALG_OPEN 0x0000 612 #define IEEE80211_AUTH_ALG_SHARED 0x0001 613 #define IEEE80211_AUTH_ALG_LEAP 0x0080 614 615 enum { 616 IEEE80211_AUTH_OPEN_REQUEST = 1, 617 IEEE80211_AUTH_OPEN_RESPONSE = 2 618 }; 619 620 enum { 621 IEEE80211_AUTH_SHARED_REQUEST = 1, 622 IEEE80211_AUTH_SHARED_CHALLENGE = 2, 623 IEEE80211_AUTH_SHARED_RESPONSE = 3, 624 IEEE80211_AUTH_SHARED_PASS = 4 625 }; 626 627 /* 628 * Reason codes 629 * 630 * Unlisted codes are reserved 631 */ 632 633 enum { 634 IEEE80211_REASON_UNSPECIFIED = 1, 635 IEEE80211_REASON_AUTH_EXPIRE = 2, 636 IEEE80211_REASON_AUTH_LEAVE = 3, 637 IEEE80211_REASON_ASSOC_EXPIRE = 4, 638 IEEE80211_REASON_ASSOC_TOOMANY = 5, 639 IEEE80211_REASON_NOT_AUTHED = 6, 640 IEEE80211_REASON_NOT_ASSOCED = 7, 641 IEEE80211_REASON_ASSOC_LEAVE = 8, 642 IEEE80211_REASON_ASSOC_NOT_AUTHED = 9, 643 644 IEEE80211_REASON_RSN_REQUIRED = 11, 645 IEEE80211_REASON_RSN_INCONSISTENT = 12, 646 IEEE80211_REASON_IE_INVALID = 13, 647 IEEE80211_REASON_MIC_FAILURE = 14, 648 649 IEEE80211_STATUS_SUCCESS = 0, 650 IEEE80211_STATUS_UNSPECIFIED = 1, 651 IEEE80211_STATUS_CAPINFO = 10, 652 IEEE80211_STATUS_NOT_ASSOCED = 11, 653 IEEE80211_STATUS_OTHER = 12, 654 IEEE80211_STATUS_ALG = 13, 655 IEEE80211_STATUS_SEQUENCE = 14, 656 IEEE80211_STATUS_CHALLENGE = 15, 657 IEEE80211_STATUS_TIMEOUT = 16, 658 IEEE80211_STATUS_TOOMANY = 17, 659 IEEE80211_STATUS_BASIC_RATE = 18, 660 IEEE80211_STATUS_SP_REQUIRED = 19, 661 IEEE80211_STATUS_PBCC_REQUIRED = 20, 662 IEEE80211_STATUS_CA_REQUIRED = 21, 663 IEEE80211_STATUS_TOO_MANY_STATIONS = 22, 664 IEEE80211_STATUS_RATES = 23, 665 IEEE80211_STATUS_SHORTSLOT_REQUIRED = 25, 666 IEEE80211_STATUS_DSSSOFDM_REQUIRED = 26 667 }; 668 669 #define IEEE80211_WEP_KEYLEN 5 /* 40bit */ 670 #define IEEE80211_WEP_IVLEN 3 /* 24bit */ 671 #define IEEE80211_WEP_KIDLEN 1 /* 1 octet */ 672 #define IEEE80211_WEP_CRCLEN 4 /* CRC-32 */ 673 #define IEEE80211_WEP_TOTLEN (IEEE80211_WEP_IVLEN + \ 674 IEEE80211_WEP_KIDLEN + \ 675 IEEE80211_WEP_CRCLEN) 676 #define IEEE80211_WEP_NKID 4 /* number of key ids */ 677 678 /* 679 * 802.11i defines an extended IV for use with non-WEP ciphers. 680 * When the EXTIV bit is set in the key id byte an additional 681 * 4 bytes immediately follow the IV for TKIP. For CCMP the 682 * EXTIV bit is likewise set but the 8 bytes represent the 683 * CCMP header rather than IV+extended-IV. 684 */ 685 #define IEEE80211_WEP_EXTIV 0x20 686 #define IEEE80211_WEP_EXTIVLEN 4 /* extended IV length */ 687 #define IEEE80211_WEP_MICLEN 8 /* trailing MIC */ 688 689 #define IEEE80211_CRC_LEN 4 690 691 /* 692 * Maximum acceptable MTU is: 693 * IEEE80211_MAX_LEN - WEP overhead - CRC - 694 * QoS overhead - RSN/WPA overhead 695 * Min is arbitrarily chosen > IEEE80211_MIN_LEN. The default 696 * mtu is Ethernet-compatible; it's set by ether_ifattach. 697 */ 698 #define IEEE80211_MTU_MAX 2290 699 #define IEEE80211_MTU_MIN 32 700 701 #define IEEE80211_MAX_LEN (2300 + IEEE80211_CRC_LEN + \ 702 (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN)) 703 #define IEEE80211_ACK_LEN \ 704 (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN) 705 #define IEEE80211_MIN_LEN \ 706 (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN) 707 708 /* 709 * The 802.11 spec says at most 2007 stations may be 710 * associated at once. For most AP's this is way more 711 * than is feasible so we use a default of 128. This 712 * number may be overridden by the driver and/or by 713 * user configuration. 714 */ 715 #define IEEE80211_AID_MAX 2007 716 #define IEEE80211_AID_DEF 128 717 718 #define IEEE80211_AID(b) ((b) &~ 0xc000) 719 720 /* 721 * RTS frame length parameters. The default is specified in 722 * the 802.11 spec as 512; we treat it as implementation-dependent 723 * so it's defined in ieee80211_var.h. The max may be wrong 724 * for jumbo frames. 725 */ 726 #define IEEE80211_RTS_MIN 1 727 #define IEEE80211_RTS_MAX 2346 728 729 /* 730 * TX fragmentation parameters. As above for RTS, we treat 731 * default as implementation-dependent so define it elsewhere. 732 */ 733 #define IEEE80211_FRAG_MIN 256 734 #define IEEE80211_FRAG_MAX 2346 735 736 /* 737 * 802.11 frame duration definitions. 738 */ 739 740 struct ieee80211_duration { 741 uint16_t d_rts_dur; 742 uint16_t d_data_dur; 743 uint16_t d_plcp_len; 744 uint8_t d_residue; /* unused octets in time slot */ 745 }; 746 747 /* One Time Unit (TU) is 1Kus = 1024 microseconds. */ 748 #define IEEE80211_DUR_TU 1024 749 750 /* IEEE 802.11b durations for DSSS PHY in microseconds */ 751 #define IEEE80211_DUR_DS_LONG_PREAMBLE 144 752 #define IEEE80211_DUR_DS_SHORT_PREAMBLE 72 753 754 #define IEEE80211_DUR_DS_SLOW_PLCPHDR 48 755 #define IEEE80211_DUR_DS_FAST_PLCPHDR 24 756 #define IEEE80211_DUR_DS_SLOW_ACK 112 757 #define IEEE80211_DUR_DS_FAST_ACK 56 758 #define IEEE80211_DUR_DS_SLOW_CTS 112 759 #define IEEE80211_DUR_DS_FAST_CTS 56 760 761 #define IEEE80211_DUR_DS_SLOT 20 762 #define IEEE80211_DUR_DS_SIFS 10 763 #define IEEE80211_DUR_DS_PIFS (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT) 764 #define IEEE80211_DUR_DS_DIFS (IEEE80211_DUR_DS_SIFS + \ 765 2 * IEEE80211_DUR_DS_SLOT) 766 #define IEEE80211_DUR_DS_EIFS (IEEE80211_DUR_DS_SIFS + \ 767 IEEE80211_DUR_DS_SLOW_ACK + \ 768 IEEE80211_DUR_DS_LONG_PREAMBLE + \ 769 IEEE80211_DUR_DS_SLOW_PLCPHDR + \ 770 IEEE80211_DUR_DS_DIFS) 771 772 773 #endif /* !_NET80211_IEEE80211_H_ */ 774