ieee80211.h revision 191756
1/*- 2 * Copyright (c) 2001 Atsushi Onoe 3 * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/net80211/ieee80211.h 191756 2009-05-02 20:25:22Z sam $ 27 */ 28#ifndef _NET80211_IEEE80211_H_ 29#define _NET80211_IEEE80211_H_ 30 31/* 32 * 802.11 protocol definitions. 33 */ 34 35#define IEEE80211_ADDR_LEN 6 /* size of 802.11 address */ 36/* is 802.11 address multicast/broadcast? */ 37#define IEEE80211_IS_MULTICAST(_a) (*(_a) & 0x01) 38 39typedef uint16_t ieee80211_seq; 40 41/* IEEE 802.11 PLCP header */ 42struct ieee80211_plcp_hdr { 43 uint16_t i_sfd; 44 uint8_t i_signal; 45 uint8_t i_service; 46 uint16_t i_length; 47 uint16_t i_crc; 48} __packed; 49 50#define IEEE80211_PLCP_SFD 0xF3A0 51#define IEEE80211_PLCP_SERVICE 0x00 52#define IEEE80211_PLCP_SERVICE_LOCKED 0x04 53#define IEEE80211_PLCL_SERVICE_PBCC 0x08 54#define IEEE80211_PLCP_SERVICE_LENEXT5 0x20 55#define IEEE80211_PLCP_SERVICE_LENEXT6 0x40 56#define IEEE80211_PLCP_SERVICE_LENEXT7 0x80 57 58/* 59 * generic definitions for IEEE 802.11 frames 60 */ 61struct ieee80211_frame { 62 uint8_t i_fc[2]; 63 uint8_t i_dur[2]; 64 uint8_t i_addr1[IEEE80211_ADDR_LEN]; 65 uint8_t i_addr2[IEEE80211_ADDR_LEN]; 66 uint8_t i_addr3[IEEE80211_ADDR_LEN]; 67 uint8_t i_seq[2]; 68 /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */ 69 /* see below */ 70} __packed; 71 72struct ieee80211_qosframe { 73 uint8_t i_fc[2]; 74 uint8_t i_dur[2]; 75 uint8_t i_addr1[IEEE80211_ADDR_LEN]; 76 uint8_t i_addr2[IEEE80211_ADDR_LEN]; 77 uint8_t i_addr3[IEEE80211_ADDR_LEN]; 78 uint8_t i_seq[2]; 79 uint8_t i_qos[2]; 80 /* possibly followed by addr4[IEEE80211_ADDR_LEN]; */ 81 /* see below */ 82} __packed; 83 84struct ieee80211_qoscntl { 85 uint8_t i_qos[2]; 86}; 87 88struct ieee80211_frame_addr4 { 89 uint8_t i_fc[2]; 90 uint8_t i_dur[2]; 91 uint8_t i_addr1[IEEE80211_ADDR_LEN]; 92 uint8_t i_addr2[IEEE80211_ADDR_LEN]; 93 uint8_t i_addr3[IEEE80211_ADDR_LEN]; 94 uint8_t i_seq[2]; 95 uint8_t i_addr4[IEEE80211_ADDR_LEN]; 96} __packed; 97 98 99struct ieee80211_qosframe_addr4 { 100 uint8_t i_fc[2]; 101 uint8_t i_dur[2]; 102 uint8_t i_addr1[IEEE80211_ADDR_LEN]; 103 uint8_t i_addr2[IEEE80211_ADDR_LEN]; 104 uint8_t i_addr3[IEEE80211_ADDR_LEN]; 105 uint8_t i_seq[2]; 106 uint8_t i_addr4[IEEE80211_ADDR_LEN]; 107 uint8_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#define IEEE80211_FC0_SUBTYPE_ACTION 0xd0 134/* for TYPE_CTL */ 135#define IEEE80211_FC0_SUBTYPE_BAR 0x80 136#define IEEE80211_FC0_SUBTYPE_PS_POLL 0xa0 137#define IEEE80211_FC0_SUBTYPE_RTS 0xb0 138#define IEEE80211_FC0_SUBTYPE_CTS 0xc0 139#define IEEE80211_FC0_SUBTYPE_ACK 0xd0 140#define IEEE80211_FC0_SUBTYPE_CF_END 0xe0 141#define IEEE80211_FC0_SUBTYPE_CF_END_ACK 0xf0 142/* for TYPE_DATA (bit combination) */ 143#define IEEE80211_FC0_SUBTYPE_DATA 0x00 144#define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10 145#define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20 146#define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30 147#define IEEE80211_FC0_SUBTYPE_NODATA 0x40 148#define IEEE80211_FC0_SUBTYPE_CFACK 0x50 149#define IEEE80211_FC0_SUBTYPE_CFPOLL 0x60 150#define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK 0x70 151#define IEEE80211_FC0_SUBTYPE_QOS 0x80 152#define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 153 154#define IEEE80211_FC1_DIR_MASK 0x03 155#define IEEE80211_FC1_DIR_NODS 0x00 /* STA->STA */ 156#define IEEE80211_FC1_DIR_TODS 0x01 /* STA->AP */ 157#define IEEE80211_FC1_DIR_FROMDS 0x02 /* AP ->STA */ 158#define IEEE80211_FC1_DIR_DSTODS 0x03 /* AP ->AP */ 159 160#define IEEE80211_FC1_MORE_FRAG 0x04 161#define IEEE80211_FC1_RETRY 0x08 162#define IEEE80211_FC1_PWR_MGT 0x10 163#define IEEE80211_FC1_MORE_DATA 0x20 164#define IEEE80211_FC1_WEP 0x40 165#define IEEE80211_FC1_ORDER 0x80 166 167#define IEEE80211_SEQ_FRAG_MASK 0x000f 168#define IEEE80211_SEQ_FRAG_SHIFT 0 169#define IEEE80211_SEQ_SEQ_MASK 0xfff0 170#define IEEE80211_SEQ_SEQ_SHIFT 4 171#define IEEE80211_SEQ_RANGE 4096 172 173#define IEEE80211_SEQ_ADD(seq, incr) \ 174 (((seq) + (incr)) & (IEEE80211_SEQ_RANGE-1)) 175#define IEEE80211_SEQ_INC(seq) IEEE80211_SEQ_ADD(seq,1) 176#define IEEE80211_SEQ_SUB(a, b) \ 177 (((a) + IEEE80211_SEQ_RANGE - (b)) & (IEEE80211_SEQ_RANGE-1)) 178 179#define IEEE80211_SEQ_BA_RANGE 2048 /* 2^11 */ 180#define IEEE80211_SEQ_BA_BEFORE(a, b) \ 181 (IEEE80211_SEQ_SUB(b, a+1) < IEEE80211_SEQ_BA_RANGE-1) 182 183#define IEEE80211_NWID_LEN 32 184 185#define IEEE80211_QOS_TXOP 0x00ff 186/* bit 8 is reserved */ 187#define IEEE80211_QOS_AMSDU 0x80 188#define IEEE80211_QOS_AMSDU_S 7 189#define IEEE80211_QOS_ACKPOLICY 0x60 190#define IEEE80211_QOS_ACKPOLICY_S 5 191#define IEEE80211_QOS_ACKPOLICY_NOACK 0x20 /* No ACK required */ 192#define IEEE80211_QOS_ACKPOLICY_BA 0x60 /* Block ACK */ 193#define IEEE80211_QOS_EOSP 0x10 /* EndOfService Period*/ 194#define IEEE80211_QOS_EOSP_S 4 195#define IEEE80211_QOS_TID 0x0f 196 197/* does frame have QoS sequence control data */ 198#define IEEE80211_QOS_HAS_SEQ(wh) \ 199 (((wh)->i_fc[0] & \ 200 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \ 201 (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS)) 202 203/* 204 * WME/802.11e information element. 205 */ 206struct ieee80211_wme_info { 207 uint8_t wme_id; /* IEEE80211_ELEMID_VENDOR */ 208 uint8_t wme_len; /* length in bytes */ 209 uint8_t wme_oui[3]; /* 0x00, 0x50, 0xf2 */ 210 uint8_t wme_type; /* OUI type */ 211 uint8_t wme_subtype; /* OUI subtype */ 212 uint8_t wme_version; /* spec revision */ 213 uint8_t wme_info; /* QoS info */ 214} __packed; 215 216/* 217 * WME/802.11e Tspec Element 218 */ 219struct ieee80211_wme_tspec { 220 uint8_t ts_id; 221 uint8_t ts_len; 222 uint8_t ts_oui[3]; 223 uint8_t ts_oui_type; 224 uint8_t ts_oui_subtype; 225 uint8_t ts_version; 226 uint8_t ts_tsinfo[3]; 227 uint8_t ts_nom_msdu[2]; 228 uint8_t ts_max_msdu[2]; 229 uint8_t ts_min_svc[4]; 230 uint8_t ts_max_svc[4]; 231 uint8_t ts_inactv_intv[4]; 232 uint8_t ts_susp_intv[4]; 233 uint8_t ts_start_svc[4]; 234 uint8_t ts_min_rate[4]; 235 uint8_t ts_mean_rate[4]; 236 uint8_t ts_max_burst[4]; 237 uint8_t ts_min_phy[4]; 238 uint8_t ts_peak_rate[4]; 239 uint8_t ts_delay[4]; 240 uint8_t ts_surplus[2]; 241 uint8_t ts_medium_time[2]; 242} __packed; 243 244/* 245 * WME AC parameter field 246 */ 247struct ieee80211_wme_acparams { 248 uint8_t acp_aci_aifsn; 249 uint8_t acp_logcwminmax; 250 uint16_t acp_txop; 251} __packed; 252 253#define WME_NUM_AC 4 /* 4 AC categories */ 254#define WME_NUM_TID 16 /* 16 tids */ 255 256#define WME_PARAM_ACI 0x60 /* Mask for ACI field */ 257#define WME_PARAM_ACI_S 5 /* Shift for ACI field */ 258#define WME_PARAM_ACM 0x10 /* Mask for ACM bit */ 259#define WME_PARAM_ACM_S 4 /* Shift for ACM bit */ 260#define WME_PARAM_AIFSN 0x0f /* Mask for aifsn field */ 261#define WME_PARAM_AIFSN_S 0 /* Shift for aifsn field */ 262#define WME_PARAM_LOGCWMIN 0x0f /* Mask for CwMin field (in log) */ 263#define WME_PARAM_LOGCWMIN_S 0 /* Shift for CwMin field */ 264#define WME_PARAM_LOGCWMAX 0xf0 /* Mask for CwMax field (in log) */ 265#define WME_PARAM_LOGCWMAX_S 4 /* Shift for CwMax field */ 266 267#define WME_AC_TO_TID(_ac) ( \ 268 ((_ac) == WME_AC_VO) ? 6 : \ 269 ((_ac) == WME_AC_VI) ? 5 : \ 270 ((_ac) == WME_AC_BK) ? 1 : \ 271 0) 272 273#define TID_TO_WME_AC(_tid) ( \ 274 ((_tid) == 0 || (_tid) == 3) ? WME_AC_BE : \ 275 ((_tid) < 3) ? WME_AC_BK : \ 276 ((_tid) < 6) ? WME_AC_VI : \ 277 WME_AC_VO) 278 279/* 280 * WME Parameter Element 281 */ 282struct ieee80211_wme_param { 283 uint8_t param_id; 284 uint8_t param_len; 285 uint8_t param_oui[3]; 286 uint8_t param_oui_type; 287 uint8_t param_oui_subtype; 288 uint8_t param_version; 289 uint8_t param_qosInfo; 290#define WME_QOSINFO_COUNT 0x0f /* Mask for param count field */ 291 uint8_t param_reserved; 292 struct ieee80211_wme_acparams params_acParams[WME_NUM_AC]; 293} __packed; 294 295/* 296 * Management Notification Frame 297 */ 298struct ieee80211_mnf { 299 uint8_t mnf_category; 300 uint8_t mnf_action; 301 uint8_t mnf_dialog; 302 uint8_t mnf_status; 303} __packed; 304#define MNF_SETUP_REQ 0 305#define MNF_SETUP_RESP 1 306#define MNF_TEARDOWN 2 307 308/* 309 * 802.11n Management Action Frames 310 */ 311/* generic frame format */ 312struct ieee80211_action { 313 uint8_t ia_category; 314 uint8_t ia_action; 315} __packed; 316 317#define IEEE80211_ACTION_CAT_QOS 0 /* QoS */ 318#define IEEE80211_ACTION_CAT_BA 3 /* BA */ 319#define IEEE80211_ACTION_CAT_HT 7 /* HT */ 320 321#define IEEE80211_ACTION_HT_TXCHWIDTH 0 /* recommended xmit chan width*/ 322#define IEEE80211_ACTION_HT_MIMOPWRSAVE 1 /* MIMO power save */ 323 324/* HT - recommended transmission channel width */ 325struct ieee80211_action_ht_txchwidth { 326 struct ieee80211_action at_header; 327 uint8_t at_chwidth; 328} __packed; 329 330#define IEEE80211_A_HT_TXCHWIDTH_20 0 331#define IEEE80211_A_HT_TXCHWIDTH_2040 1 332 333/* HT - MIMO Power Save (NB: D2.04) */ 334struct ieee80211_action_ht_mimopowersave { 335 struct ieee80211_action am_header; 336 uint8_t am_control; 337} __packed; 338 339#define IEEE80211_A_HT_MIMOPWRSAVE_ENA 0x01 /* PS enabled */ 340#define IEEE80211_A_HT_MIMOPWRSAVE_MODE 0x02 341#define IEEE80211_A_HT_MIMOPWRSAVE_MODE_S 1 342#define IEEE80211_A_HT_MIMOPWRSAVE_DYNAMIC 0x02 /* Dynamic Mode */ 343#define IEEE80211_A_HT_MIMOPWRSAVE_STATIC 0x00 /* no SM packets */ 344/* bits 2-7 reserved */ 345 346/* Block Ack actions */ 347#define IEEE80211_ACTION_BA_ADDBA_REQUEST 0 /* ADDBA request */ 348#define IEEE80211_ACTION_BA_ADDBA_RESPONSE 1 /* ADDBA response */ 349#define IEEE80211_ACTION_BA_DELBA 2 /* DELBA */ 350 351/* Block Ack Parameter Set */ 352#define IEEE80211_BAPS_BUFSIZ 0xffc0 /* buffer size */ 353#define IEEE80211_BAPS_BUFSIZ_S 6 354#define IEEE80211_BAPS_TID 0x003c /* TID */ 355#define IEEE80211_BAPS_TID_S 2 356#define IEEE80211_BAPS_POLICY 0x0002 /* block ack policy */ 357#define IEEE80211_BAPS_POLICY_S 1 358 359#define IEEE80211_BAPS_POLICY_DELAYED (0<<IEEE80211_BAPS_POLICY_S) 360#define IEEE80211_BAPS_POLICY_IMMEDIATE (1<<IEEE80211_BAPS_POLICY_S) 361 362/* Block Ack Sequence Control */ 363#define IEEE80211_BASEQ_START 0xfff0 /* starting seqnum */ 364#define IEEE80211_BASEQ_START_S 4 365#define IEEE80211_BASEQ_FRAG 0x000f /* fragment number */ 366#define IEEE80211_BASEQ_FRAG_S 0 367 368/* Delayed Block Ack Parameter Set */ 369#define IEEE80211_DELBAPS_TID 0xf000 /* TID */ 370#define IEEE80211_DELBAPS_TID_S 12 371#define IEEE80211_DELBAPS_INIT 0x0800 /* initiator */ 372#define IEEE80211_DELBAPS_INIT_S 11 373 374/* BA - ADDBA request */ 375struct ieee80211_action_ba_addbarequest { 376 struct ieee80211_action rq_header; 377 uint8_t rq_dialogtoken; 378 uint16_t rq_baparamset; 379 uint16_t rq_batimeout; /* in TUs */ 380 uint16_t rq_baseqctl; 381} __packed; 382 383/* BA - ADDBA response */ 384struct ieee80211_action_ba_addbaresponse { 385 struct ieee80211_action rs_header; 386 uint8_t rs_dialogtoken; 387 uint16_t rs_statuscode; 388 uint16_t rs_baparamset; 389 uint16_t rs_batimeout; /* in TUs */ 390} __packed; 391 392/* BA - DELBA */ 393struct ieee80211_action_ba_delba { 394 struct ieee80211_action dl_header; 395 uint16_t dl_baparamset; 396 uint16_t dl_reasoncode; 397} __packed; 398 399/* BAR Control */ 400#define IEEE80211_BAR_TID 0xf000 /* TID */ 401#define IEEE80211_BAR_TID_S 12 402#define IEEE80211_BAR_COMP 0x0004 /* Compressed Bitmap */ 403#define IEEE80211_BAR_MTID 0x0002 /* Multi-TID */ 404#define IEEE80211_BAR_NOACK 0x0001 /* No-Ack policy */ 405 406/* BAR Starting Sequence Control */ 407#define IEEE80211_BAR_SEQ_START 0xfff0 /* starting seqnum */ 408#define IEEE80211_BAR_SEQ_START_S 4 409 410struct ieee80211_ba_request { 411 uint16_t rq_barctl; 412 uint16_t rq_barseqctl; 413} __packed; 414 415/* 416 * Control frames. 417 */ 418struct ieee80211_frame_min { 419 uint8_t i_fc[2]; 420 uint8_t i_dur[2]; 421 uint8_t i_addr1[IEEE80211_ADDR_LEN]; 422 uint8_t i_addr2[IEEE80211_ADDR_LEN]; 423 /* FCS */ 424} __packed; 425 426struct ieee80211_frame_rts { 427 uint8_t i_fc[2]; 428 uint8_t i_dur[2]; 429 uint8_t i_ra[IEEE80211_ADDR_LEN]; 430 uint8_t i_ta[IEEE80211_ADDR_LEN]; 431 /* FCS */ 432} __packed; 433 434struct ieee80211_frame_cts { 435 uint8_t i_fc[2]; 436 uint8_t i_dur[2]; 437 uint8_t i_ra[IEEE80211_ADDR_LEN]; 438 /* FCS */ 439} __packed; 440 441struct ieee80211_frame_ack { 442 uint8_t i_fc[2]; 443 uint8_t i_dur[2]; 444 uint8_t i_ra[IEEE80211_ADDR_LEN]; 445 /* FCS */ 446} __packed; 447 448struct ieee80211_frame_pspoll { 449 uint8_t i_fc[2]; 450 uint8_t i_aid[2]; 451 uint8_t i_bssid[IEEE80211_ADDR_LEN]; 452 uint8_t i_ta[IEEE80211_ADDR_LEN]; 453 /* FCS */ 454} __packed; 455 456struct ieee80211_frame_cfend { /* NB: also CF-End+CF-Ack */ 457 uint8_t i_fc[2]; 458 uint8_t i_dur[2]; /* should be zero */ 459 uint8_t i_ra[IEEE80211_ADDR_LEN]; 460 uint8_t i_bssid[IEEE80211_ADDR_LEN]; 461 /* FCS */ 462} __packed; 463 464struct ieee80211_frame_bar { 465 uint8_t i_fc[2]; 466 uint8_t i_dur[2]; 467 uint8_t i_ra[IEEE80211_ADDR_LEN]; 468 uint8_t i_ta[IEEE80211_ADDR_LEN]; 469 uint16_t i_ctl; 470 uint16_t i_seq; 471 /* FCS */ 472} __packed; 473 474/* 475 * BEACON management packets 476 * 477 * octet timestamp[8] 478 * octet beacon interval[2] 479 * octet capability information[2] 480 * information element 481 * octet elemid 482 * octet length 483 * octet information[length] 484 */ 485 486#define IEEE80211_BEACON_INTERVAL(beacon) \ 487 ((beacon)[8] | ((beacon)[9] << 8)) 488#define IEEE80211_BEACON_CAPABILITY(beacon) \ 489 ((beacon)[10] | ((beacon)[11] << 8)) 490 491#define IEEE80211_CAPINFO_ESS 0x0001 492#define IEEE80211_CAPINFO_IBSS 0x0002 493#define IEEE80211_CAPINFO_CF_POLLABLE 0x0004 494#define IEEE80211_CAPINFO_CF_POLLREQ 0x0008 495#define IEEE80211_CAPINFO_PRIVACY 0x0010 496#define IEEE80211_CAPINFO_SHORT_PREAMBLE 0x0020 497#define IEEE80211_CAPINFO_PBCC 0x0040 498#define IEEE80211_CAPINFO_CHNL_AGILITY 0x0080 499#define IEEE80211_CAPINFO_SPECTRUM_MGMT 0x0100 500/* bit 9 is reserved */ 501#define IEEE80211_CAPINFO_SHORT_SLOTTIME 0x0400 502#define IEEE80211_CAPINFO_RSN 0x0800 503/* bit 12 is reserved */ 504#define IEEE80211_CAPINFO_DSSSOFDM 0x2000 505/* bits 14-15 are reserved */ 506 507#define IEEE80211_CAPINFO_BITS \ 508 "\20\1ESS\2IBSS\3CF_POLLABLE\4CF_POLLREQ\5PRIVACY\6SHORT_PREAMBLE" \ 509 "\7PBCC\10CHNL_AGILITY\11SPECTRUM_MGMT\13SHORT_SLOTTIME\14RSN" \ 510 "\16DSSOFDM" 511 512/* 513 * 802.11i/WPA information element (maximally sized). 514 */ 515struct ieee80211_ie_wpa { 516 uint8_t wpa_id; /* IEEE80211_ELEMID_VENDOR */ 517 uint8_t wpa_len; /* length in bytes */ 518 uint8_t wpa_oui[3]; /* 0x00, 0x50, 0xf2 */ 519 uint8_t wpa_type; /* OUI type */ 520 uint16_t wpa_version; /* spec revision */ 521 uint32_t wpa_mcipher[1]; /* multicast/group key cipher */ 522 uint16_t wpa_uciphercnt; /* # pairwise key ciphers */ 523 uint32_t wpa_uciphers[8];/* ciphers */ 524 uint16_t wpa_authselcnt; /* authentication selector cnt*/ 525 uint32_t wpa_authsels[8];/* selectors */ 526 uint16_t wpa_caps; /* 802.11i capabilities */ 527 uint16_t wpa_pmkidcnt; /* 802.11i pmkid count */ 528 uint16_t wpa_pmkids[8]; /* 802.11i pmkids */ 529} __packed; 530 531/* 532 * 802.11n HT Capability IE 533 * NB: these reflect D1.10 534 */ 535struct ieee80211_ie_htcap { 536 uint8_t hc_id; /* element ID */ 537 uint8_t hc_len; /* length in bytes */ 538 uint16_t hc_cap; /* HT caps (see below) */ 539 uint8_t hc_param; /* HT params (see below) */ 540 uint8_t hc_mcsset[16]; /* supported MCS set */ 541 uint16_t hc_extcap; /* extended HT capabilities */ 542 uint32_t hc_txbf; /* txbf capabilities */ 543 uint8_t hc_antenna; /* antenna capabilities */ 544} __packed; 545 546/* HT capability flags (ht_cap) */ 547#define IEEE80211_HTCAP_LDPC 0x0001 /* LDPC supported */ 548#define IEEE80211_HTCAP_CHWIDTH40 0x0002 /* 20/40 supported */ 549#define IEEE80211_HTCAP_SMPS 0x000c /* SM Power Save mode */ 550#define IEEE80211_HTCAP_SMPS_OFF 0x000c /* disabled */ 551#define IEEE80211_HTCAP_SMPS_DYNAMIC 0x0004 /* send RTS first */ 552/* NB: SMPS value 2 is reserved */ 553#define IEEE80211_HTCAP_SMPS_ENA 0x0000 /* enabled (static mode) */ 554#define IEEE80211_HTCAP_GREENFIELD 0x0010 /* Greenfield supported */ 555#define IEEE80211_HTCAP_SHORTGI20 0x0020 /* Short GI in 20MHz */ 556#define IEEE80211_HTCAP_SHORTGI40 0x0040 /* Short GI in 40MHz */ 557#define IEEE80211_HTCAP_TXSTBC 0x0080 /* STBC tx ok */ 558#define IEEE80211_HTCAP_RXSTBC 0x0300 /* STBC rx support */ 559#define IEEE80211_HTCAP_RXSTBC_S 8 560#define IEEE80211_HTCAP_RXSTBC_1STREAM 0x0100 /* 1 spatial stream */ 561#define IEEE80211_HTCAP_RXSTBC_2STREAM 0x0200 /* 1-2 spatial streams*/ 562#define IEEE80211_HTCAP_RXSTBC_3STREAM 0x0300 /* 1-3 spatial streams*/ 563#define IEEE80211_HTCAP_DELBA 0x0400 /* HT DELBA supported */ 564#define IEEE80211_HTCAP_MAXAMSDU 0x0800 /* max A-MSDU length */ 565#define IEEE80211_HTCAP_MAXAMSDU_7935 0x0800 /* 7935 octets */ 566#define IEEE80211_HTCAP_MAXAMSDU_3839 0x0000 /* 3839 octets */ 567#define IEEE80211_HTCAP_DSSSCCK40 0x1000 /* DSSS/CCK in 40MHz */ 568#define IEEE80211_HTCAP_PSMP 0x2000 /* PSMP supported */ 569#define IEEE80211_HTCAP_40INTOLERANT 0x4000 /* 40MHz intolerant */ 570#define IEEE80211_HTCAP_LSIGTXOPPROT 0x8000 /* L-SIG TXOP prot */ 571 572#define IEEE80211_HTCAP_BITS \ 573 "\20\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \ 574 "\13DELBA\14AMSDU(7935)\15DSSSCCK40\16PSMP\1740INTOLERANT" \ 575 "\20LSIGTXOPPROT" 576 577/* HT parameters (hc_param) */ 578#define IEEE80211_HTCAP_MAXRXAMPDU 0x03 /* max rx A-MPDU factor */ 579#define IEEE80211_HTCAP_MAXRXAMPDU_S 0 580#define IEEE80211_HTCAP_MAXRXAMPDU_8K 0 581#define IEEE80211_HTCAP_MAXRXAMPDU_16K 1 582#define IEEE80211_HTCAP_MAXRXAMPDU_32K 2 583#define IEEE80211_HTCAP_MAXRXAMPDU_64K 3 584#define IEEE80211_HTCAP_MPDUDENSITY 0x1c /* min MPDU start spacing */ 585#define IEEE80211_HTCAP_MPDUDENSITY_S 2 586#define IEEE80211_HTCAP_MPDUDENSITY_NA 0 /* no time restriction */ 587#define IEEE80211_HTCAP_MPDUDENSITY_025 1 /* 1/4 us */ 588#define IEEE80211_HTCAP_MPDUDENSITY_05 2 /* 1/2 us */ 589#define IEEE80211_HTCAP_MPDUDENSITY_1 3 /* 1 us */ 590#define IEEE80211_HTCAP_MPDUDENSITY_2 4 /* 2 us */ 591#define IEEE80211_HTCAP_MPDUDENSITY_4 5 /* 4 us */ 592#define IEEE80211_HTCAP_MPDUDENSITY_8 6 /* 8 us */ 593#define IEEE80211_HTCAP_MPDUDENSITY_16 7 /* 16 us */ 594 595/* HT extended capabilities (hc_extcap) */ 596#define IEEE80211_HTCAP_PCO 0x0001 /* PCO capable */ 597#define IEEE80211_HTCAP_PCOTRANS 0x0006 /* PCO transition time */ 598#define IEEE80211_HTCAP_PCOTRANS_S 1 599#define IEEE80211_HTCAP_PCOTRANS_04 0x0002 /* 400 us */ 600#define IEEE80211_HTCAP_PCOTRANS_15 0x0004 /* 1.5 ms */ 601#define IEEE80211_HTCAP_PCOTRANS_5 0x0006 /* 5 ms */ 602/* bits 3-7 reserved */ 603#define IEEE80211_HTCAP_MCSFBACK 0x0300 /* MCS feedback */ 604#define IEEE80211_HTCAP_MCSFBACK_S 8 605#define IEEE80211_HTCAP_MCSFBACK_NONE 0x0000 /* nothing provided */ 606#define IEEE80211_HTCAP_MCSFBACK_UNSOL 0x0200 /* unsolicited feedback */ 607#define IEEE80211_HTCAP_MCSFBACK_MRQ 0x0300 /* " "+respond to MRQ */ 608#define IEEE80211_HTCAP_HTC 0x0400 /* +HTC support */ 609#define IEEE80211_HTCAP_RDR 0x0800 /* reverse direction responder*/ 610/* bits 12-15 reserved */ 611 612/* 613 * 802.11n HT Information IE 614 */ 615struct ieee80211_ie_htinfo { 616 uint8_t hi_id; /* element ID */ 617 uint8_t hi_len; /* length in bytes */ 618 uint8_t hi_ctrlchannel; /* primary channel */ 619 uint8_t hi_byte1; /* ht ie byte 1 */ 620 uint8_t hi_byte2; /* ht ie byte 2 */ 621 uint8_t hi_byte3; /* ht ie byte 3 */ 622 uint16_t hi_byte45; /* ht ie bytes 4+5 */ 623 uint8_t hi_basicmcsset[16]; /* basic MCS set */ 624} __packed; 625 626/* byte1 */ 627#define IEEE80211_HTINFO_2NDCHAN 0x03 /* secondary/ext chan offset */ 628#define IEEE80211_HTINFO_2NDCHAN_S 0 629#define IEEE80211_HTINFO_2NDCHAN_NONE 0x00 /* no secondary/ext channel */ 630#define IEEE80211_HTINFO_2NDCHAN_ABOVE 0x01 /* above private channel */ 631/* NB: 2 is reserved */ 632#define IEEE80211_HTINFO_2NDCHAN_BELOW 0x03 /* below primary channel */ 633#define IEEE80211_HTINFO_TXWIDTH 0x04 /* tx channel width */ 634#define IEEE80211_HTINFO_TXWIDTH_20 0x00 /* 20MHz width */ 635#define IEEE80211_HTINFO_TXWIDTH_2040 0x04 /* any supported width */ 636#define IEEE80211_HTINFO_RIFSMODE 0x08 /* Reduced IFS (RIFS) use */ 637#define IEEE80211_HTINFO_RIFSMODE_PROH 0x00 /* RIFS use prohibited */ 638#define IEEE80211_HTINFO_RIFSMODE_PERM 0x08 /* RIFS use permitted */ 639#define IEEE80211_HTINFO_PMSPONLY 0x10 /* PSMP required to associate */ 640#define IEEE80211_HTINFO_SIGRAN 0xe0 /* shortest Service Interval */ 641#define IEEE80211_HTINFO_SIGRAN_S 5 642#define IEEE80211_HTINFO_SIGRAN_5 0x00 /* 5 ms */ 643/* XXX add rest */ 644 645/* bytes 2+3 */ 646#define IEEE80211_HTINFO_OPMODE 0x03 /* operating mode */ 647#define IEEE80211_HTINFO_OPMODE_S 0 648#define IEEE80211_HTINFO_OPMODE_PURE 0x00 /* no protection */ 649#define IEEE80211_HTINFO_OPMODE_PROTOPT 0x01 /* protection optional */ 650#define IEEE80211_HTINFO_OPMODE_HT20PR 0x02 /* protection for HT20 sta's */ 651#define IEEE80211_HTINFO_OPMODE_MIXED 0x03 /* protection for legacy sta's*/ 652#define IEEE80211_HTINFO_NONGF_PRESENT 0x04 /* non-GF sta's present */ 653#define IEEE80211_HTINFO_TXBL 0x08 /* transmit burst limit */ 654#define IEEE80211_HTINFO_NONHT_PRESENT 0x10 /* non-HT sta's present */ 655/* bits 5-15 reserved */ 656 657/* bytes 4+5 */ 658#define IEEE80211_HTINFO_2NDARYBEACON 0x01 659#define IEEE80211_HTINFO_LSIGTXOPPROT 0x02 660#define IEEE80211_HTINFO_PCO_ACTIVE 0x04 661#define IEEE80211_HTINFO_40MHZPHASE 0x08 662 663/* byte5 */ 664#define IEEE80211_HTINFO_BASIC_STBCMCS 0x7f 665#define IEEE80211_HTINFO_BASIC_STBCMCS_S 0 666#define IEEE80211_HTINFO_DUALPROTECTED 0x80 667 668/* 669 * Management information element payloads. 670 */ 671 672enum { 673 IEEE80211_ELEMID_SSID = 0, 674 IEEE80211_ELEMID_RATES = 1, 675 IEEE80211_ELEMID_FHPARMS = 2, 676 IEEE80211_ELEMID_DSPARMS = 3, 677 IEEE80211_ELEMID_CFPARMS = 4, 678 IEEE80211_ELEMID_TIM = 5, 679 IEEE80211_ELEMID_IBSSPARMS = 6, 680 IEEE80211_ELEMID_COUNTRY = 7, 681 IEEE80211_ELEMID_CHALLENGE = 16, 682 /* 17-31 reserved for challenge text extension */ 683 IEEE80211_ELEMID_PWRCNSTR = 32, 684 IEEE80211_ELEMID_PWRCAP = 33, 685 IEEE80211_ELEMID_TPCREQ = 34, 686 IEEE80211_ELEMID_TPCREP = 35, 687 IEEE80211_ELEMID_SUPPCHAN = 36, 688 IEEE80211_ELEMID_CHANSWITCHANN = 37, 689 IEEE80211_ELEMID_MEASREQ = 38, 690 IEEE80211_ELEMID_MEASREP = 39, 691 IEEE80211_ELEMID_QUIET = 40, 692 IEEE80211_ELEMID_IBSSDFS = 41, 693 IEEE80211_ELEMID_ERP = 42, 694 IEEE80211_ELEMID_HTCAP = 45, 695 IEEE80211_ELEMID_RSN = 48, 696 IEEE80211_ELEMID_XRATES = 50, 697 IEEE80211_ELEMID_HTINFO = 61, 698 IEEE80211_ELEMID_TPC = 150, 699 IEEE80211_ELEMID_CCKM = 156, 700 IEEE80211_ELEMID_VENDOR = 221, /* vendor private */ 701}; 702 703struct ieee80211_tim_ie { 704 uint8_t tim_ie; /* IEEE80211_ELEMID_TIM */ 705 uint8_t tim_len; 706 uint8_t tim_count; /* DTIM count */ 707 uint8_t tim_period; /* DTIM period */ 708 uint8_t tim_bitctl; /* bitmap control */ 709 uint8_t tim_bitmap[1]; /* variable-length bitmap */ 710} __packed; 711 712struct ieee80211_country_ie { 713 uint8_t ie; /* IEEE80211_ELEMID_COUNTRY */ 714 uint8_t len; 715 uint8_t cc[3]; /* ISO CC+(I)ndoor/(O)utdoor */ 716 struct { 717 uint8_t schan; /* starting channel */ 718 uint8_t nchan; /* number channels */ 719 uint8_t maxtxpwr; /* tx power cap */ 720 } __packed band[1]; /* sub bands (NB: var size) */ 721} __packed; 722 723#define IEEE80211_COUNTRY_MAX_BANDS 84 /* max possible bands */ 724#define IEEE80211_COUNTRY_MAX_SIZE \ 725 (sizeof(struct ieee80211_country_ie) + 3*(IEEE80211_COUNTRY_MAX_BANDS-1)) 726 727/* 728 * 802.11h Channel Switch Announcement (CSA). 729 */ 730struct ieee80211_csa_ie { 731 uint8_t csa_ie; /* IEEE80211_ELEMID_CHANSWITCHANN */ 732 uint8_t csa_len; 733 uint8_t csa_mode; /* Channel Switch Mode */ 734 uint8_t csa_newchan; /* New Channel Number */ 735 uint8_t csa_count; /* Channel Switch Count */ 736} __packed; 737 738/* rate set entries are in .5 Mb/s units, and potentially marked as basic */ 739#define IEEE80211_RATE_BASIC 0x80 740#define IEEE80211_RATE_VAL 0x7f 741 742/* EPR information element flags */ 743#define IEEE80211_ERP_NON_ERP_PRESENT 0x01 744#define IEEE80211_ERP_USE_PROTECTION 0x02 745#define IEEE80211_ERP_LONG_PREAMBLE 0x04 746 747#define IEEE80211_ERP_BITS \ 748 "\20\1NON_ERP_PRESENT\2USE_PROTECTION\3LONG_PREAMBLE" 749 750#define ATH_OUI 0x7f0300 /* Atheros OUI */ 751#define ATH_OUI_TYPE 0x01 /* Atheros protocol ie */ 752 753/* NB: Atheros allocated the OUI for this purpose ~2005 but beware ... */ 754#define TDMA_OUI ATH_OUI 755#define TDMA_OUI_TYPE 0x02 /* TDMA protocol ie */ 756 757#define BCM_OUI 0x4c9000 /* Broadcom OUI */ 758#define BCM_OUI_HTCAP 51 /* pre-draft HTCAP ie */ 759#define BCM_OUI_HTINFO 52 /* pre-draft HTINFO ie */ 760 761#define WPA_OUI 0xf25000 762#define WPA_OUI_TYPE 0x01 763#define WPA_VERSION 1 /* current supported version */ 764 765#define WPA_CSE_NULL 0x00 766#define WPA_CSE_WEP40 0x01 767#define WPA_CSE_TKIP 0x02 768#define WPA_CSE_CCMP 0x04 769#define WPA_CSE_WEP104 0x05 770 771#define WPA_ASE_NONE 0x00 772#define WPA_ASE_8021X_UNSPEC 0x01 773#define WPA_ASE_8021X_PSK 0x02 774 775#define WPS_OUI_TYPE 0x04 776 777#define RSN_OUI 0xac0f00 778#define RSN_VERSION 1 /* current supported version */ 779 780#define RSN_CSE_NULL 0x00 781#define RSN_CSE_WEP40 0x01 782#define RSN_CSE_TKIP 0x02 783#define RSN_CSE_WRAP 0x03 784#define RSN_CSE_CCMP 0x04 785#define RSN_CSE_WEP104 0x05 786 787#define RSN_ASE_NONE 0x00 788#define RSN_ASE_8021X_UNSPEC 0x01 789#define RSN_ASE_8021X_PSK 0x02 790 791#define RSN_CAP_PREAUTH 0x01 792 793#define WME_OUI 0xf25000 794#define WME_OUI_TYPE 0x02 795#define WME_INFO_OUI_SUBTYPE 0x00 796#define WME_PARAM_OUI_SUBTYPE 0x01 797#define WME_VERSION 1 798 799/* WME stream classes */ 800#define WME_AC_BE 0 /* best effort */ 801#define WME_AC_BK 1 /* background */ 802#define WME_AC_VI 2 /* video */ 803#define WME_AC_VO 3 /* voice */ 804 805/* 806 * AUTH management packets 807 * 808 * octet algo[2] 809 * octet seq[2] 810 * octet status[2] 811 * octet chal.id 812 * octet chal.length 813 * octet chal.text[253] NB: 1-253 bytes 814 */ 815 816/* challenge length for shared key auth */ 817#define IEEE80211_CHALLENGE_LEN 128 818 819#define IEEE80211_AUTH_ALG_OPEN 0x0000 820#define IEEE80211_AUTH_ALG_SHARED 0x0001 821#define IEEE80211_AUTH_ALG_LEAP 0x0080 822 823enum { 824 IEEE80211_AUTH_OPEN_REQUEST = 1, 825 IEEE80211_AUTH_OPEN_RESPONSE = 2, 826}; 827 828enum { 829 IEEE80211_AUTH_SHARED_REQUEST = 1, 830 IEEE80211_AUTH_SHARED_CHALLENGE = 2, 831 IEEE80211_AUTH_SHARED_RESPONSE = 3, 832 IEEE80211_AUTH_SHARED_PASS = 4, 833}; 834 835/* 836 * Reason and status codes. 837 * 838 * Reason codes are used in management frames to indicate why an 839 * action took place (e.g. on disassociation). Status codes are 840 * used in management frames to indicate the result of an operation. 841 * 842 * Unlisted codes are reserved 843 */ 844 845enum { 846 IEEE80211_REASON_UNSPECIFIED = 1, 847 IEEE80211_REASON_AUTH_EXPIRE = 2, 848 IEEE80211_REASON_AUTH_LEAVE = 3, 849 IEEE80211_REASON_ASSOC_EXPIRE = 4, 850 IEEE80211_REASON_ASSOC_TOOMANY = 5, 851 IEEE80211_REASON_NOT_AUTHED = 6, 852 IEEE80211_REASON_NOT_ASSOCED = 7, 853 IEEE80211_REASON_ASSOC_LEAVE = 8, 854 IEEE80211_REASON_ASSOC_NOT_AUTHED = 9, 855 IEEE80211_REASON_DISASSOC_PWRCAP_BAD = 10, /* 11h */ 856 IEEE80211_REASON_DISASSOC_SUPCHAN_BAD = 11, /* 11h */ 857 IEEE80211_REASON_IE_INVALID = 13, /* 11i */ 858 IEEE80211_REASON_MIC_FAILURE = 14, /* 11i */ 859 IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, /* 11i */ 860 IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT = 16, /* 11i */ 861 IEEE80211_REASON_IE_IN_4WAY_DIFFERS = 17, /* 11i */ 862 IEEE80211_REASON_GROUP_CIPHER_INVALID = 18, /* 11i */ 863 IEEE80211_REASON_PAIRWISE_CIPHER_INVALID= 19, /* 11i */ 864 IEEE80211_REASON_AKMP_INVALID = 20, /* 11i */ 865 IEEE80211_REASON_UNSUPP_RSN_IE_VERSION = 21, /* 11i */ 866 IEEE80211_REASON_INVALID_RSN_IE_CAP = 22, /* 11i */ 867 IEEE80211_REASON_802_1X_AUTH_FAILED = 23, /* 11i */ 868 IEEE80211_REASON_CIPHER_SUITE_REJECTED = 24, /* 11i */ 869 IEEE80211_REASON_UNSPECIFIED_QOS = 32, /* 11e */ 870 IEEE80211_REASON_INSUFFICIENT_BW = 33, /* 11e */ 871 IEEE80211_REASON_TOOMANY_FRAMES = 34, /* 11e */ 872 IEEE80211_REASON_OUTSIDE_TXOP = 35, /* 11e */ 873 IEEE80211_REASON_LEAVING_QBSS = 36, /* 11e */ 874 IEEE80211_REASON_BAD_MECHANISM = 37, /* 11e */ 875 IEEE80211_REASON_SETUP_NEEDED = 38, /* 11e */ 876 IEEE80211_REASON_TIMEOUT = 39, /* 11e */ 877 878 IEEE80211_STATUS_SUCCESS = 0, 879 IEEE80211_STATUS_UNSPECIFIED = 1, 880 IEEE80211_STATUS_CAPINFO = 10, 881 IEEE80211_STATUS_NOT_ASSOCED = 11, 882 IEEE80211_STATUS_OTHER = 12, 883 IEEE80211_STATUS_ALG = 13, 884 IEEE80211_STATUS_SEQUENCE = 14, 885 IEEE80211_STATUS_CHALLENGE = 15, 886 IEEE80211_STATUS_TIMEOUT = 16, 887 IEEE80211_STATUS_TOOMANY = 17, 888 IEEE80211_STATUS_BASIC_RATE = 18, 889 IEEE80211_STATUS_SP_REQUIRED = 19, /* 11b */ 890 IEEE80211_STATUS_PBCC_REQUIRED = 20, /* 11b */ 891 IEEE80211_STATUS_CA_REQUIRED = 21, /* 11b */ 892 IEEE80211_STATUS_SPECMGMT_REQUIRED = 22, /* 11h */ 893 IEEE80211_STATUS_PWRCAP_REQUIRED = 23, /* 11h */ 894 IEEE80211_STATUS_SUPCHAN_REQUIRED = 24, /* 11h */ 895 IEEE80211_STATUS_SHORTSLOT_REQUIRED = 25, /* 11g */ 896 IEEE80211_STATUS_DSSSOFDM_REQUIRED = 26, /* 11g */ 897 IEEE80211_STATUS_INVALID_IE = 40, /* 11i */ 898 IEEE80211_STATUS_GROUP_CIPHER_INVALID = 41, /* 11i */ 899 IEEE80211_STATUS_PAIRWISE_CIPHER_INVALID = 42, /* 11i */ 900 IEEE80211_STATUS_AKMP_INVALID = 43, /* 11i */ 901 IEEE80211_STATUS_UNSUPP_RSN_IE_VERSION = 44, /* 11i */ 902 IEEE80211_STATUS_INVALID_RSN_IE_CAP = 45, /* 11i */ 903 IEEE80211_STATUS_CIPHER_SUITE_REJECTED = 46, /* 11i */ 904}; 905 906#define IEEE80211_WEP_KEYLEN 5 /* 40bit */ 907#define IEEE80211_WEP_IVLEN 3 /* 24bit */ 908#define IEEE80211_WEP_KIDLEN 1 /* 1 octet */ 909#define IEEE80211_WEP_CRCLEN 4 /* CRC-32 */ 910#define IEEE80211_WEP_TOTLEN (IEEE80211_WEP_IVLEN + \ 911 IEEE80211_WEP_KIDLEN + \ 912 IEEE80211_WEP_CRCLEN) 913#define IEEE80211_WEP_NKID 4 /* number of key ids */ 914 915/* 916 * 802.11i defines an extended IV for use with non-WEP ciphers. 917 * When the EXTIV bit is set in the key id byte an additional 918 * 4 bytes immediately follow the IV for TKIP. For CCMP the 919 * EXTIV bit is likewise set but the 8 bytes represent the 920 * CCMP header rather than IV+extended-IV. 921 */ 922#define IEEE80211_WEP_EXTIV 0x20 923#define IEEE80211_WEP_EXTIVLEN 4 /* extended IV length */ 924#define IEEE80211_WEP_MICLEN 8 /* trailing MIC */ 925 926#define IEEE80211_CRC_LEN 4 927 928/* 929 * Maximum acceptable MTU is: 930 * IEEE80211_MAX_LEN - WEP overhead - CRC - 931 * QoS overhead - RSN/WPA overhead 932 * Min is arbitrarily chosen > IEEE80211_MIN_LEN. The default 933 * mtu is Ethernet-compatible; it's set by ether_ifattach. 934 */ 935#define IEEE80211_MTU_MAX 2290 936#define IEEE80211_MTU_MIN 32 937 938#define IEEE80211_MAX_LEN (2300 + IEEE80211_CRC_LEN + \ 939 (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN)) 940#define IEEE80211_ACK_LEN \ 941 (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN) 942#define IEEE80211_MIN_LEN \ 943 (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN) 944 945/* 946 * The 802.11 spec says at most 2007 stations may be 947 * associated at once. For most AP's this is way more 948 * than is feasible so we use a default of IEEE80211_AID_DEF. 949 * This number may be overridden by the driver and/or by 950 * user configuration but may not be less than IEEE80211_AID_MIN 951 * (see _ieee80211.h for implementation-specific settings). 952 */ 953#define IEEE80211_AID_MAX 2007 954 955#define IEEE80211_AID(b) ((b) &~ 0xc000) 956 957/* 958 * RTS frame length parameters. The default is specified in 959 * the 802.11 spec as 512; we treat it as implementation-dependent 960 * so it's defined in ieee80211_var.h. The max may be wrong 961 * for jumbo frames. 962 */ 963#define IEEE80211_RTS_MIN 1 964#define IEEE80211_RTS_MAX 2346 965 966/* 967 * TX fragmentation parameters. As above for RTS, we treat 968 * default as implementation-dependent so define it elsewhere. 969 */ 970#define IEEE80211_FRAG_MIN 256 971#define IEEE80211_FRAG_MAX 2346 972 973/* 974 * Beacon interval (TU's). Min+max come from WiFi requirements. 975 * As above, we treat default as implementation-dependent so 976 * define it elsewhere. 977 */ 978#define IEEE80211_BINTVAL_MAX 1000 /* max beacon interval (TU's) */ 979#define IEEE80211_BINTVAL_MIN 25 /* min beacon interval (TU's) */ 980 981/* 982 * DTIM period (beacons). Min+max are not really defined 983 * by the protocol but we want them publicly visible so 984 * define them here. 985 */ 986#define IEEE80211_DTIM_MAX 15 /* max DTIM period */ 987#define IEEE80211_DTIM_MIN 1 /* min DTIM period */ 988 989/* 990 * Beacon miss threshold (beacons). As for DTIM, we define 991 * them here to be publicly visible. Note the max may be 992 * clamped depending on device capabilities. 993 */ 994#define IEEE80211_HWBMISS_MIN 1 995#define IEEE80211_HWBMISS_MAX 255 996 997/* 998 * 802.11 frame duration definitions. 999 */ 1000 1001struct ieee80211_duration { 1002 uint16_t d_rts_dur; 1003 uint16_t d_data_dur; 1004 uint16_t d_plcp_len; 1005 uint8_t d_residue; /* unused octets in time slot */ 1006}; 1007 1008/* One Time Unit (TU) is 1Kus = 1024 microseconds. */ 1009#define IEEE80211_DUR_TU 1024 1010 1011/* IEEE 802.11b durations for DSSS PHY in microseconds */ 1012#define IEEE80211_DUR_DS_LONG_PREAMBLE 144 1013#define IEEE80211_DUR_DS_SHORT_PREAMBLE 72 1014 1015#define IEEE80211_DUR_DS_SLOW_PLCPHDR 48 1016#define IEEE80211_DUR_DS_FAST_PLCPHDR 24 1017#define IEEE80211_DUR_DS_SLOW_ACK 112 1018#define IEEE80211_DUR_DS_FAST_ACK 56 1019#define IEEE80211_DUR_DS_SLOW_CTS 112 1020#define IEEE80211_DUR_DS_FAST_CTS 56 1021 1022#define IEEE80211_DUR_DS_SLOT 20 1023#define IEEE80211_DUR_DS_SIFS 10 1024#define IEEE80211_DUR_DS_PIFS (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT) 1025#define IEEE80211_DUR_DS_DIFS (IEEE80211_DUR_DS_SIFS + \ 1026 2 * IEEE80211_DUR_DS_SLOT) 1027#define IEEE80211_DUR_DS_EIFS (IEEE80211_DUR_DS_SIFS + \ 1028 IEEE80211_DUR_DS_SLOW_ACK + \ 1029 IEEE80211_DUR_DS_LONG_PREAMBLE + \ 1030 IEEE80211_DUR_DS_SLOW_PLCPHDR + \ 1031 IEEE80211_DUR_DIFS) 1032 1033#endif /* _NET80211_IEEE80211_H_ */ 1034