ieee80211.h revision 193439
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 193439 2009-06-04 15:57:38Z 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_BA 0x90 137#define IEEE80211_FC0_SUBTYPE_PS_POLL 0xa0 138#define IEEE80211_FC0_SUBTYPE_RTS 0xb0 139#define IEEE80211_FC0_SUBTYPE_CTS 0xc0 140#define IEEE80211_FC0_SUBTYPE_ACK 0xd0 141#define IEEE80211_FC0_SUBTYPE_CF_END 0xe0 142#define IEEE80211_FC0_SUBTYPE_CF_END_ACK 0xf0 143/* for TYPE_DATA (bit combination) */ 144#define IEEE80211_FC0_SUBTYPE_DATA 0x00 145#define IEEE80211_FC0_SUBTYPE_CF_ACK 0x10 146#define IEEE80211_FC0_SUBTYPE_CF_POLL 0x20 147#define IEEE80211_FC0_SUBTYPE_CF_ACPL 0x30 148#define IEEE80211_FC0_SUBTYPE_NODATA 0x40 149#define IEEE80211_FC0_SUBTYPE_CFACK 0x50 150#define IEEE80211_FC0_SUBTYPE_CFPOLL 0x60 151#define IEEE80211_FC0_SUBTYPE_CF_ACK_CF_ACK 0x70 152#define IEEE80211_FC0_SUBTYPE_QOS 0x80 153#define IEEE80211_FC0_SUBTYPE_QOS_NULL 0xc0 154 155#define IEEE80211_FC1_DIR_MASK 0x03 156#define IEEE80211_FC1_DIR_NODS 0x00 /* STA->STA */ 157#define IEEE80211_FC1_DIR_TODS 0x01 /* STA->AP */ 158#define IEEE80211_FC1_DIR_FROMDS 0x02 /* AP ->STA */ 159#define IEEE80211_FC1_DIR_DSTODS 0x03 /* AP ->AP */ 160 161#define IEEE80211_FC1_MORE_FRAG 0x04 162#define IEEE80211_FC1_RETRY 0x08 163#define IEEE80211_FC1_PWR_MGT 0x10 164#define IEEE80211_FC1_MORE_DATA 0x20 165#define IEEE80211_FC1_WEP 0x40 166#define IEEE80211_FC1_ORDER 0x80 167 168#define IEEE80211_SEQ_FRAG_MASK 0x000f 169#define IEEE80211_SEQ_FRAG_SHIFT 0 170#define IEEE80211_SEQ_SEQ_MASK 0xfff0 171#define IEEE80211_SEQ_SEQ_SHIFT 4 172#define IEEE80211_SEQ_RANGE 4096 173 174#define IEEE80211_SEQ_ADD(seq, incr) \ 175 (((seq) + (incr)) & (IEEE80211_SEQ_RANGE-1)) 176#define IEEE80211_SEQ_INC(seq) IEEE80211_SEQ_ADD(seq,1) 177#define IEEE80211_SEQ_SUB(a, b) \ 178 (((a) + IEEE80211_SEQ_RANGE - (b)) & (IEEE80211_SEQ_RANGE-1)) 179 180#define IEEE80211_SEQ_BA_RANGE 2048 /* 2^11 */ 181#define IEEE80211_SEQ_BA_BEFORE(a, b) \ 182 (IEEE80211_SEQ_SUB(b, a+1) < IEEE80211_SEQ_BA_RANGE-1) 183 184#define IEEE80211_NWID_LEN 32 185 186#define IEEE80211_QOS_TXOP 0x00ff 187/* bit 8 is reserved */ 188#define IEEE80211_QOS_AMSDU 0x80 189#define IEEE80211_QOS_AMSDU_S 7 190#define IEEE80211_QOS_ACKPOLICY 0x60 191#define IEEE80211_QOS_ACKPOLICY_S 5 192#define IEEE80211_QOS_ACKPOLICY_NOACK 0x20 /* No ACK required */ 193#define IEEE80211_QOS_ACKPOLICY_BA 0x60 /* Block ACK */ 194#define IEEE80211_QOS_EOSP 0x10 /* EndOfService Period*/ 195#define IEEE80211_QOS_EOSP_S 4 196#define IEEE80211_QOS_TID 0x0f 197 198/* does frame have QoS sequence control data */ 199#define IEEE80211_QOS_HAS_SEQ(wh) \ 200 (((wh)->i_fc[0] & \ 201 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == \ 202 (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS)) 203 204/* 205 * WME/802.11e information element. 206 */ 207struct ieee80211_wme_info { 208 uint8_t wme_id; /* IEEE80211_ELEMID_VENDOR */ 209 uint8_t wme_len; /* length in bytes */ 210 uint8_t wme_oui[3]; /* 0x00, 0x50, 0xf2 */ 211 uint8_t wme_type; /* OUI type */ 212 uint8_t wme_subtype; /* OUI subtype */ 213 uint8_t wme_version; /* spec revision */ 214 uint8_t wme_info; /* QoS info */ 215} __packed; 216 217/* 218 * WME/802.11e Tspec Element 219 */ 220struct ieee80211_wme_tspec { 221 uint8_t ts_id; 222 uint8_t ts_len; 223 uint8_t ts_oui[3]; 224 uint8_t ts_oui_type; 225 uint8_t ts_oui_subtype; 226 uint8_t ts_version; 227 uint8_t ts_tsinfo[3]; 228 uint8_t ts_nom_msdu[2]; 229 uint8_t ts_max_msdu[2]; 230 uint8_t ts_min_svc[4]; 231 uint8_t ts_max_svc[4]; 232 uint8_t ts_inactv_intv[4]; 233 uint8_t ts_susp_intv[4]; 234 uint8_t ts_start_svc[4]; 235 uint8_t ts_min_rate[4]; 236 uint8_t ts_mean_rate[4]; 237 uint8_t ts_max_burst[4]; 238 uint8_t ts_min_phy[4]; 239 uint8_t ts_peak_rate[4]; 240 uint8_t ts_delay[4]; 241 uint8_t ts_surplus[2]; 242 uint8_t ts_medium_time[2]; 243} __packed; 244 245/* 246 * WME AC parameter field 247 */ 248struct ieee80211_wme_acparams { 249 uint8_t acp_aci_aifsn; 250 uint8_t acp_logcwminmax; 251 uint16_t acp_txop; 252} __packed; 253 254#define WME_NUM_AC 4 /* 4 AC categories */ 255#define WME_NUM_TID 16 /* 16 tids */ 256 257#define WME_PARAM_ACI 0x60 /* Mask for ACI field */ 258#define WME_PARAM_ACI_S 5 /* Shift for ACI field */ 259#define WME_PARAM_ACM 0x10 /* Mask for ACM bit */ 260#define WME_PARAM_ACM_S 4 /* Shift for ACM bit */ 261#define WME_PARAM_AIFSN 0x0f /* Mask for aifsn field */ 262#define WME_PARAM_AIFSN_S 0 /* Shift for aifsn field */ 263#define WME_PARAM_LOGCWMIN 0x0f /* Mask for CwMin field (in log) */ 264#define WME_PARAM_LOGCWMIN_S 0 /* Shift for CwMin field */ 265#define WME_PARAM_LOGCWMAX 0xf0 /* Mask for CwMax field (in log) */ 266#define WME_PARAM_LOGCWMAX_S 4 /* Shift for CwMax field */ 267 268#define WME_AC_TO_TID(_ac) ( \ 269 ((_ac) == WME_AC_VO) ? 6 : \ 270 ((_ac) == WME_AC_VI) ? 5 : \ 271 ((_ac) == WME_AC_BK) ? 1 : \ 272 0) 273 274#define TID_TO_WME_AC(_tid) ( \ 275 ((_tid) == 0 || (_tid) == 3) ? WME_AC_BE : \ 276 ((_tid) < 3) ? WME_AC_BK : \ 277 ((_tid) < 6) ? WME_AC_VI : \ 278 WME_AC_VO) 279 280/* 281 * WME Parameter Element 282 */ 283struct ieee80211_wme_param { 284 uint8_t param_id; 285 uint8_t param_len; 286 uint8_t param_oui[3]; 287 uint8_t param_oui_type; 288 uint8_t param_oui_subtype; 289 uint8_t param_version; 290 uint8_t param_qosInfo; 291#define WME_QOSINFO_COUNT 0x0f /* Mask for param count field */ 292 uint8_t param_reserved; 293 struct ieee80211_wme_acparams params_acParams[WME_NUM_AC]; 294} __packed; 295 296/* 297 * Management Notification Frame 298 */ 299struct ieee80211_mnf { 300 uint8_t mnf_category; 301 uint8_t mnf_action; 302 uint8_t mnf_dialog; 303 uint8_t mnf_status; 304} __packed; 305#define MNF_SETUP_REQ 0 306#define MNF_SETUP_RESP 1 307#define MNF_TEARDOWN 2 308 309/* 310 * 802.11n Management Action Frames 311 */ 312/* generic frame format */ 313struct ieee80211_action { 314 uint8_t ia_category; 315 uint8_t ia_action; 316} __packed; 317 318#define IEEE80211_ACTION_CAT_QOS 0 /* QoS */ 319#define IEEE80211_ACTION_CAT_BA 3 /* BA */ 320#define IEEE80211_ACTION_CAT_HT 7 /* HT */ 321 322#define IEEE80211_ACTION_HT_TXCHWIDTH 0 /* recommended xmit chan width*/ 323#define IEEE80211_ACTION_HT_MIMOPWRSAVE 1 /* MIMO power save */ 324 325/* HT - recommended transmission channel width */ 326struct ieee80211_action_ht_txchwidth { 327 struct ieee80211_action at_header; 328 uint8_t at_chwidth; 329} __packed; 330 331#define IEEE80211_A_HT_TXCHWIDTH_20 0 332#define IEEE80211_A_HT_TXCHWIDTH_2040 1 333 334/* HT - MIMO Power Save (NB: D2.04) */ 335struct ieee80211_action_ht_mimopowersave { 336 struct ieee80211_action am_header; 337 uint8_t am_control; 338} __packed; 339 340#define IEEE80211_A_HT_MIMOPWRSAVE_ENA 0x01 /* PS enabled */ 341#define IEEE80211_A_HT_MIMOPWRSAVE_MODE 0x02 342#define IEEE80211_A_HT_MIMOPWRSAVE_MODE_S 1 343#define IEEE80211_A_HT_MIMOPWRSAVE_DYNAMIC 0x02 /* Dynamic Mode */ 344#define IEEE80211_A_HT_MIMOPWRSAVE_STATIC 0x00 /* no SM packets */ 345/* bits 2-7 reserved */ 346 347/* Block Ack actions */ 348#define IEEE80211_ACTION_BA_ADDBA_REQUEST 0 /* ADDBA request */ 349#define IEEE80211_ACTION_BA_ADDBA_RESPONSE 1 /* ADDBA response */ 350#define IEEE80211_ACTION_BA_DELBA 2 /* DELBA */ 351 352/* Block Ack Parameter Set */ 353#define IEEE80211_BAPS_BUFSIZ 0xffc0 /* buffer size */ 354#define IEEE80211_BAPS_BUFSIZ_S 6 355#define IEEE80211_BAPS_TID 0x003c /* TID */ 356#define IEEE80211_BAPS_TID_S 2 357#define IEEE80211_BAPS_POLICY 0x0002 /* block ack policy */ 358#define IEEE80211_BAPS_POLICY_S 1 359 360#define IEEE80211_BAPS_POLICY_DELAYED (0<<IEEE80211_BAPS_POLICY_S) 361#define IEEE80211_BAPS_POLICY_IMMEDIATE (1<<IEEE80211_BAPS_POLICY_S) 362 363/* Block Ack Sequence Control */ 364#define IEEE80211_BASEQ_START 0xfff0 /* starting seqnum */ 365#define IEEE80211_BASEQ_START_S 4 366#define IEEE80211_BASEQ_FRAG 0x000f /* fragment number */ 367#define IEEE80211_BASEQ_FRAG_S 0 368 369/* Delayed Block Ack Parameter Set */ 370#define IEEE80211_DELBAPS_TID 0xf000 /* TID */ 371#define IEEE80211_DELBAPS_TID_S 12 372#define IEEE80211_DELBAPS_INIT 0x0800 /* initiator */ 373#define IEEE80211_DELBAPS_INIT_S 11 374 375/* BA - ADDBA request */ 376struct ieee80211_action_ba_addbarequest { 377 struct ieee80211_action rq_header; 378 uint8_t rq_dialogtoken; 379 uint16_t rq_baparamset; 380 uint16_t rq_batimeout; /* in TUs */ 381 uint16_t rq_baseqctl; 382} __packed; 383 384/* BA - ADDBA response */ 385struct ieee80211_action_ba_addbaresponse { 386 struct ieee80211_action rs_header; 387 uint8_t rs_dialogtoken; 388 uint16_t rs_statuscode; 389 uint16_t rs_baparamset; 390 uint16_t rs_batimeout; /* in TUs */ 391} __packed; 392 393/* BA - DELBA */ 394struct ieee80211_action_ba_delba { 395 struct ieee80211_action dl_header; 396 uint16_t dl_baparamset; 397 uint16_t dl_reasoncode; 398} __packed; 399 400/* BAR Control */ 401#define IEEE80211_BAR_TID 0xf000 /* TID */ 402#define IEEE80211_BAR_TID_S 12 403#define IEEE80211_BAR_COMP 0x0004 /* Compressed Bitmap */ 404#define IEEE80211_BAR_MTID 0x0002 /* Multi-TID */ 405#define IEEE80211_BAR_NOACK 0x0001 /* No-Ack policy */ 406 407/* BAR Starting Sequence Control */ 408#define IEEE80211_BAR_SEQ_START 0xfff0 /* starting seqnum */ 409#define IEEE80211_BAR_SEQ_START_S 4 410 411struct ieee80211_ba_request { 412 uint16_t rq_barctl; 413 uint16_t rq_barseqctl; 414} __packed; 415 416/* 417 * Control frames. 418 */ 419struct ieee80211_frame_min { 420 uint8_t i_fc[2]; 421 uint8_t i_dur[2]; 422 uint8_t i_addr1[IEEE80211_ADDR_LEN]; 423 uint8_t i_addr2[IEEE80211_ADDR_LEN]; 424 /* FCS */ 425} __packed; 426 427struct ieee80211_frame_rts { 428 uint8_t i_fc[2]; 429 uint8_t i_dur[2]; 430 uint8_t i_ra[IEEE80211_ADDR_LEN]; 431 uint8_t i_ta[IEEE80211_ADDR_LEN]; 432 /* FCS */ 433} __packed; 434 435struct ieee80211_frame_cts { 436 uint8_t i_fc[2]; 437 uint8_t i_dur[2]; 438 uint8_t i_ra[IEEE80211_ADDR_LEN]; 439 /* FCS */ 440} __packed; 441 442struct ieee80211_frame_ack { 443 uint8_t i_fc[2]; 444 uint8_t i_dur[2]; 445 uint8_t i_ra[IEEE80211_ADDR_LEN]; 446 /* FCS */ 447} __packed; 448 449struct ieee80211_frame_pspoll { 450 uint8_t i_fc[2]; 451 uint8_t i_aid[2]; 452 uint8_t i_bssid[IEEE80211_ADDR_LEN]; 453 uint8_t i_ta[IEEE80211_ADDR_LEN]; 454 /* FCS */ 455} __packed; 456 457struct ieee80211_frame_cfend { /* NB: also CF-End+CF-Ack */ 458 uint8_t i_fc[2]; 459 uint8_t i_dur[2]; /* should be zero */ 460 uint8_t i_ra[IEEE80211_ADDR_LEN]; 461 uint8_t i_bssid[IEEE80211_ADDR_LEN]; 462 /* FCS */ 463} __packed; 464 465struct ieee80211_frame_bar { 466 uint8_t i_fc[2]; 467 uint8_t i_dur[2]; 468 uint8_t i_ra[IEEE80211_ADDR_LEN]; 469 uint8_t i_ta[IEEE80211_ADDR_LEN]; 470 uint16_t i_ctl; 471 uint16_t i_seq; 472 /* FCS */ 473} __packed; 474 475/* 476 * BEACON management packets 477 * 478 * octet timestamp[8] 479 * octet beacon interval[2] 480 * octet capability information[2] 481 * information element 482 * octet elemid 483 * octet length 484 * octet information[length] 485 */ 486 487#define IEEE80211_BEACON_INTERVAL(beacon) \ 488 ((beacon)[8] | ((beacon)[9] << 8)) 489#define IEEE80211_BEACON_CAPABILITY(beacon) \ 490 ((beacon)[10] | ((beacon)[11] << 8)) 491 492#define IEEE80211_CAPINFO_ESS 0x0001 493#define IEEE80211_CAPINFO_IBSS 0x0002 494#define IEEE80211_CAPINFO_CF_POLLABLE 0x0004 495#define IEEE80211_CAPINFO_CF_POLLREQ 0x0008 496#define IEEE80211_CAPINFO_PRIVACY 0x0010 497#define IEEE80211_CAPINFO_SHORT_PREAMBLE 0x0020 498#define IEEE80211_CAPINFO_PBCC 0x0040 499#define IEEE80211_CAPINFO_CHNL_AGILITY 0x0080 500#define IEEE80211_CAPINFO_SPECTRUM_MGMT 0x0100 501/* bit 9 is reserved */ 502#define IEEE80211_CAPINFO_SHORT_SLOTTIME 0x0400 503#define IEEE80211_CAPINFO_RSN 0x0800 504/* bit 12 is reserved */ 505#define IEEE80211_CAPINFO_DSSSOFDM 0x2000 506/* bits 14-15 are reserved */ 507 508#define IEEE80211_CAPINFO_BITS \ 509 "\20\1ESS\2IBSS\3CF_POLLABLE\4CF_POLLREQ\5PRIVACY\6SHORT_PREAMBLE" \ 510 "\7PBCC\10CHNL_AGILITY\11SPECTRUM_MGMT\13SHORT_SLOTTIME\14RSN" \ 511 "\16DSSOFDM" 512 513/* 514 * 802.11i/WPA information element (maximally sized). 515 */ 516struct ieee80211_ie_wpa { 517 uint8_t wpa_id; /* IEEE80211_ELEMID_VENDOR */ 518 uint8_t wpa_len; /* length in bytes */ 519 uint8_t wpa_oui[3]; /* 0x00, 0x50, 0xf2 */ 520 uint8_t wpa_type; /* OUI type */ 521 uint16_t wpa_version; /* spec revision */ 522 uint32_t wpa_mcipher[1]; /* multicast/group key cipher */ 523 uint16_t wpa_uciphercnt; /* # pairwise key ciphers */ 524 uint32_t wpa_uciphers[8];/* ciphers */ 525 uint16_t wpa_authselcnt; /* authentication selector cnt*/ 526 uint32_t wpa_authsels[8];/* selectors */ 527 uint16_t wpa_caps; /* 802.11i capabilities */ 528 uint16_t wpa_pmkidcnt; /* 802.11i pmkid count */ 529 uint16_t wpa_pmkids[8]; /* 802.11i pmkids */ 530} __packed; 531 532/* 533 * 802.11n HT Capability IE 534 * NB: these reflect D1.10 535 */ 536struct ieee80211_ie_htcap { 537 uint8_t hc_id; /* element ID */ 538 uint8_t hc_len; /* length in bytes */ 539 uint16_t hc_cap; /* HT caps (see below) */ 540 uint8_t hc_param; /* HT params (see below) */ 541 uint8_t hc_mcsset[16]; /* supported MCS set */ 542 uint16_t hc_extcap; /* extended HT capabilities */ 543 uint32_t hc_txbf; /* txbf capabilities */ 544 uint8_t hc_antenna; /* antenna capabilities */ 545} __packed; 546 547/* HT capability flags (ht_cap) */ 548#define IEEE80211_HTCAP_LDPC 0x0001 /* LDPC supported */ 549#define IEEE80211_HTCAP_CHWIDTH40 0x0002 /* 20/40 supported */ 550#define IEEE80211_HTCAP_SMPS 0x000c /* SM Power Save mode */ 551#define IEEE80211_HTCAP_SMPS_OFF 0x000c /* disabled */ 552#define IEEE80211_HTCAP_SMPS_DYNAMIC 0x0004 /* send RTS first */ 553/* NB: SMPS value 2 is reserved */ 554#define IEEE80211_HTCAP_SMPS_ENA 0x0000 /* enabled (static mode) */ 555#define IEEE80211_HTCAP_GREENFIELD 0x0010 /* Greenfield supported */ 556#define IEEE80211_HTCAP_SHORTGI20 0x0020 /* Short GI in 20MHz */ 557#define IEEE80211_HTCAP_SHORTGI40 0x0040 /* Short GI in 40MHz */ 558#define IEEE80211_HTCAP_TXSTBC 0x0080 /* STBC tx ok */ 559#define IEEE80211_HTCAP_RXSTBC 0x0300 /* STBC rx support */ 560#define IEEE80211_HTCAP_RXSTBC_S 8 561#define IEEE80211_HTCAP_RXSTBC_1STREAM 0x0100 /* 1 spatial stream */ 562#define IEEE80211_HTCAP_RXSTBC_2STREAM 0x0200 /* 1-2 spatial streams*/ 563#define IEEE80211_HTCAP_RXSTBC_3STREAM 0x0300 /* 1-3 spatial streams*/ 564#define IEEE80211_HTCAP_DELBA 0x0400 /* HT DELBA supported */ 565#define IEEE80211_HTCAP_MAXAMSDU 0x0800 /* max A-MSDU length */ 566#define IEEE80211_HTCAP_MAXAMSDU_7935 0x0800 /* 7935 octets */ 567#define IEEE80211_HTCAP_MAXAMSDU_3839 0x0000 /* 3839 octets */ 568#define IEEE80211_HTCAP_DSSSCCK40 0x1000 /* DSSS/CCK in 40MHz */ 569#define IEEE80211_HTCAP_PSMP 0x2000 /* PSMP supported */ 570#define IEEE80211_HTCAP_40INTOLERANT 0x4000 /* 40MHz intolerant */ 571#define IEEE80211_HTCAP_LSIGTXOPPROT 0x8000 /* L-SIG TXOP prot */ 572 573#define IEEE80211_HTCAP_BITS \ 574 "\20\1LDPC\2CHWIDTH40\5GREENFIELD\6SHORTGI20\7SHORTGI40\10TXSTBC" \ 575 "\13DELBA\14AMSDU(7935)\15DSSSCCK40\16PSMP\1740INTOLERANT" \ 576 "\20LSIGTXOPPROT" 577 578/* HT parameters (hc_param) */ 579#define IEEE80211_HTCAP_MAXRXAMPDU 0x03 /* max rx A-MPDU factor */ 580#define IEEE80211_HTCAP_MAXRXAMPDU_S 0 581#define IEEE80211_HTCAP_MAXRXAMPDU_8K 0 582#define IEEE80211_HTCAP_MAXRXAMPDU_16K 1 583#define IEEE80211_HTCAP_MAXRXAMPDU_32K 2 584#define IEEE80211_HTCAP_MAXRXAMPDU_64K 3 585#define IEEE80211_HTCAP_MPDUDENSITY 0x1c /* min MPDU start spacing */ 586#define IEEE80211_HTCAP_MPDUDENSITY_S 2 587#define IEEE80211_HTCAP_MPDUDENSITY_NA 0 /* no time restriction */ 588#define IEEE80211_HTCAP_MPDUDENSITY_025 1 /* 1/4 us */ 589#define IEEE80211_HTCAP_MPDUDENSITY_05 2 /* 1/2 us */ 590#define IEEE80211_HTCAP_MPDUDENSITY_1 3 /* 1 us */ 591#define IEEE80211_HTCAP_MPDUDENSITY_2 4 /* 2 us */ 592#define IEEE80211_HTCAP_MPDUDENSITY_4 5 /* 4 us */ 593#define IEEE80211_HTCAP_MPDUDENSITY_8 6 /* 8 us */ 594#define IEEE80211_HTCAP_MPDUDENSITY_16 7 /* 16 us */ 595 596/* HT extended capabilities (hc_extcap) */ 597#define IEEE80211_HTCAP_PCO 0x0001 /* PCO capable */ 598#define IEEE80211_HTCAP_PCOTRANS 0x0006 /* PCO transition time */ 599#define IEEE80211_HTCAP_PCOTRANS_S 1 600#define IEEE80211_HTCAP_PCOTRANS_04 0x0002 /* 400 us */ 601#define IEEE80211_HTCAP_PCOTRANS_15 0x0004 /* 1.5 ms */ 602#define IEEE80211_HTCAP_PCOTRANS_5 0x0006 /* 5 ms */ 603/* bits 3-7 reserved */ 604#define IEEE80211_HTCAP_MCSFBACK 0x0300 /* MCS feedback */ 605#define IEEE80211_HTCAP_MCSFBACK_S 8 606#define IEEE80211_HTCAP_MCSFBACK_NONE 0x0000 /* nothing provided */ 607#define IEEE80211_HTCAP_MCSFBACK_UNSOL 0x0200 /* unsolicited feedback */ 608#define IEEE80211_HTCAP_MCSFBACK_MRQ 0x0300 /* " "+respond to MRQ */ 609#define IEEE80211_HTCAP_HTC 0x0400 /* +HTC support */ 610#define IEEE80211_HTCAP_RDR 0x0800 /* reverse direction responder*/ 611/* bits 12-15 reserved */ 612 613/* 614 * 802.11n HT Information IE 615 */ 616struct ieee80211_ie_htinfo { 617 uint8_t hi_id; /* element ID */ 618 uint8_t hi_len; /* length in bytes */ 619 uint8_t hi_ctrlchannel; /* primary channel */ 620 uint8_t hi_byte1; /* ht ie byte 1 */ 621 uint8_t hi_byte2; /* ht ie byte 2 */ 622 uint8_t hi_byte3; /* ht ie byte 3 */ 623 uint16_t hi_byte45; /* ht ie bytes 4+5 */ 624 uint8_t hi_basicmcsset[16]; /* basic MCS set */ 625} __packed; 626 627/* byte1 */ 628#define IEEE80211_HTINFO_2NDCHAN 0x03 /* secondary/ext chan offset */ 629#define IEEE80211_HTINFO_2NDCHAN_S 0 630#define IEEE80211_HTINFO_2NDCHAN_NONE 0x00 /* no secondary/ext channel */ 631#define IEEE80211_HTINFO_2NDCHAN_ABOVE 0x01 /* above private channel */ 632/* NB: 2 is reserved */ 633#define IEEE80211_HTINFO_2NDCHAN_BELOW 0x03 /* below primary channel */ 634#define IEEE80211_HTINFO_TXWIDTH 0x04 /* tx channel width */ 635#define IEEE80211_HTINFO_TXWIDTH_20 0x00 /* 20MHz width */ 636#define IEEE80211_HTINFO_TXWIDTH_2040 0x04 /* any supported width */ 637#define IEEE80211_HTINFO_RIFSMODE 0x08 /* Reduced IFS (RIFS) use */ 638#define IEEE80211_HTINFO_RIFSMODE_PROH 0x00 /* RIFS use prohibited */ 639#define IEEE80211_HTINFO_RIFSMODE_PERM 0x08 /* RIFS use permitted */ 640#define IEEE80211_HTINFO_PMSPONLY 0x10 /* PSMP required to associate */ 641#define IEEE80211_HTINFO_SIGRAN 0xe0 /* shortest Service Interval */ 642#define IEEE80211_HTINFO_SIGRAN_S 5 643#define IEEE80211_HTINFO_SIGRAN_5 0x00 /* 5 ms */ 644/* XXX add rest */ 645 646/* bytes 2+3 */ 647#define IEEE80211_HTINFO_OPMODE 0x03 /* operating mode */ 648#define IEEE80211_HTINFO_OPMODE_S 0 649#define IEEE80211_HTINFO_OPMODE_PURE 0x00 /* no protection */ 650#define IEEE80211_HTINFO_OPMODE_PROTOPT 0x01 /* protection optional */ 651#define IEEE80211_HTINFO_OPMODE_HT20PR 0x02 /* protection for HT20 sta's */ 652#define IEEE80211_HTINFO_OPMODE_MIXED 0x03 /* protection for legacy sta's*/ 653#define IEEE80211_HTINFO_NONGF_PRESENT 0x04 /* non-GF sta's present */ 654#define IEEE80211_HTINFO_TXBL 0x08 /* transmit burst limit */ 655#define IEEE80211_HTINFO_NONHT_PRESENT 0x10 /* non-HT sta's present */ 656/* bits 5-15 reserved */ 657 658/* bytes 4+5 */ 659#define IEEE80211_HTINFO_2NDARYBEACON 0x01 660#define IEEE80211_HTINFO_LSIGTXOPPROT 0x02 661#define IEEE80211_HTINFO_PCO_ACTIVE 0x04 662#define IEEE80211_HTINFO_40MHZPHASE 0x08 663 664/* byte5 */ 665#define IEEE80211_HTINFO_BASIC_STBCMCS 0x7f 666#define IEEE80211_HTINFO_BASIC_STBCMCS_S 0 667#define IEEE80211_HTINFO_DUALPROTECTED 0x80 668 669/* 670 * Management information element payloads. 671 */ 672 673enum { 674 IEEE80211_ELEMID_SSID = 0, 675 IEEE80211_ELEMID_RATES = 1, 676 IEEE80211_ELEMID_FHPARMS = 2, 677 IEEE80211_ELEMID_DSPARMS = 3, 678 IEEE80211_ELEMID_CFPARMS = 4, 679 IEEE80211_ELEMID_TIM = 5, 680 IEEE80211_ELEMID_IBSSPARMS = 6, 681 IEEE80211_ELEMID_COUNTRY = 7, 682 IEEE80211_ELEMID_CHALLENGE = 16, 683 /* 17-31 reserved for challenge text extension */ 684 IEEE80211_ELEMID_PWRCNSTR = 32, 685 IEEE80211_ELEMID_PWRCAP = 33, 686 IEEE80211_ELEMID_TPCREQ = 34, 687 IEEE80211_ELEMID_TPCREP = 35, 688 IEEE80211_ELEMID_SUPPCHAN = 36, 689 IEEE80211_ELEMID_CSA = 37, 690 IEEE80211_ELEMID_MEASREQ = 38, 691 IEEE80211_ELEMID_MEASREP = 39, 692 IEEE80211_ELEMID_QUIET = 40, 693 IEEE80211_ELEMID_IBSSDFS = 41, 694 IEEE80211_ELEMID_ERP = 42, 695 IEEE80211_ELEMID_HTCAP = 45, 696 IEEE80211_ELEMID_RSN = 48, 697 IEEE80211_ELEMID_XRATES = 50, 698 IEEE80211_ELEMID_HTINFO = 61, 699 IEEE80211_ELEMID_TPC = 150, 700 IEEE80211_ELEMID_CCKM = 156, 701 IEEE80211_ELEMID_VENDOR = 221, /* vendor private */ 702}; 703 704struct ieee80211_tim_ie { 705 uint8_t tim_ie; /* IEEE80211_ELEMID_TIM */ 706 uint8_t tim_len; 707 uint8_t tim_count; /* DTIM count */ 708 uint8_t tim_period; /* DTIM period */ 709 uint8_t tim_bitctl; /* bitmap control */ 710 uint8_t tim_bitmap[1]; /* variable-length bitmap */ 711} __packed; 712 713struct ieee80211_country_ie { 714 uint8_t ie; /* IEEE80211_ELEMID_COUNTRY */ 715 uint8_t len; 716 uint8_t cc[3]; /* ISO CC+(I)ndoor/(O)utdoor */ 717 struct { 718 uint8_t schan; /* starting channel */ 719 uint8_t nchan; /* number channels */ 720 uint8_t maxtxpwr; /* tx power cap */ 721 } __packed band[1]; /* sub bands (NB: var size) */ 722} __packed; 723 724#define IEEE80211_COUNTRY_MAX_BANDS 84 /* max possible bands */ 725#define IEEE80211_COUNTRY_MAX_SIZE \ 726 (sizeof(struct ieee80211_country_ie) + 3*(IEEE80211_COUNTRY_MAX_BANDS-1)) 727 728/* 729 * 802.11h Channel Switch Announcement (CSA). 730 */ 731struct ieee80211_csa_ie { 732 uint8_t csa_ie; /* IEEE80211_ELEMID_CHANSWITCHANN */ 733 uint8_t csa_len; 734 uint8_t csa_mode; /* Channel Switch Mode */ 735 uint8_t csa_newchan; /* New Channel Number */ 736 uint8_t csa_count; /* Channel Switch Count */ 737} __packed; 738 739/* 740 * Note the min acceptable CSA count is used to guard against 741 * malicious CSA injection in station mode. Defining this value 742 * as other than 0 violates the 11h spec. 743 */ 744#define IEEE80211_CSA_COUNT_MIN 2 745#define IEEE80211_CSA_COUNT_MAX 255 746 747/* rate set entries are in .5 Mb/s units, and potentially marked as basic */ 748#define IEEE80211_RATE_BASIC 0x80 749#define IEEE80211_RATE_VAL 0x7f 750 751/* EPR information element flags */ 752#define IEEE80211_ERP_NON_ERP_PRESENT 0x01 753#define IEEE80211_ERP_USE_PROTECTION 0x02 754#define IEEE80211_ERP_LONG_PREAMBLE 0x04 755 756#define IEEE80211_ERP_BITS \ 757 "\20\1NON_ERP_PRESENT\2USE_PROTECTION\3LONG_PREAMBLE" 758 759#define ATH_OUI 0x7f0300 /* Atheros OUI */ 760#define ATH_OUI_TYPE 0x01 /* Atheros protocol ie */ 761 762/* NB: Atheros allocated the OUI for this purpose ~2005 but beware ... */ 763#define TDMA_OUI ATH_OUI 764#define TDMA_OUI_TYPE 0x02 /* TDMA protocol ie */ 765 766#define BCM_OUI 0x4c9000 /* Broadcom OUI */ 767#define BCM_OUI_HTCAP 51 /* pre-draft HTCAP ie */ 768#define BCM_OUI_HTINFO 52 /* pre-draft HTINFO ie */ 769 770#define WPA_OUI 0xf25000 771#define WPA_OUI_TYPE 0x01 772#define WPA_VERSION 1 /* current supported version */ 773 774#define WPA_CSE_NULL 0x00 775#define WPA_CSE_WEP40 0x01 776#define WPA_CSE_TKIP 0x02 777#define WPA_CSE_CCMP 0x04 778#define WPA_CSE_WEP104 0x05 779 780#define WPA_ASE_NONE 0x00 781#define WPA_ASE_8021X_UNSPEC 0x01 782#define WPA_ASE_8021X_PSK 0x02 783 784#define WPS_OUI_TYPE 0x04 785 786#define RSN_OUI 0xac0f00 787#define RSN_VERSION 1 /* current supported version */ 788 789#define RSN_CSE_NULL 0x00 790#define RSN_CSE_WEP40 0x01 791#define RSN_CSE_TKIP 0x02 792#define RSN_CSE_WRAP 0x03 793#define RSN_CSE_CCMP 0x04 794#define RSN_CSE_WEP104 0x05 795 796#define RSN_ASE_NONE 0x00 797#define RSN_ASE_8021X_UNSPEC 0x01 798#define RSN_ASE_8021X_PSK 0x02 799 800#define RSN_CAP_PREAUTH 0x01 801 802#define WME_OUI 0xf25000 803#define WME_OUI_TYPE 0x02 804#define WME_INFO_OUI_SUBTYPE 0x00 805#define WME_PARAM_OUI_SUBTYPE 0x01 806#define WME_VERSION 1 807 808/* WME stream classes */ 809#define WME_AC_BE 0 /* best effort */ 810#define WME_AC_BK 1 /* background */ 811#define WME_AC_VI 2 /* video */ 812#define WME_AC_VO 3 /* voice */ 813 814/* 815 * AUTH management packets 816 * 817 * octet algo[2] 818 * octet seq[2] 819 * octet status[2] 820 * octet chal.id 821 * octet chal.length 822 * octet chal.text[253] NB: 1-253 bytes 823 */ 824 825/* challenge length for shared key auth */ 826#define IEEE80211_CHALLENGE_LEN 128 827 828#define IEEE80211_AUTH_ALG_OPEN 0x0000 829#define IEEE80211_AUTH_ALG_SHARED 0x0001 830#define IEEE80211_AUTH_ALG_LEAP 0x0080 831 832enum { 833 IEEE80211_AUTH_OPEN_REQUEST = 1, 834 IEEE80211_AUTH_OPEN_RESPONSE = 2, 835}; 836 837enum { 838 IEEE80211_AUTH_SHARED_REQUEST = 1, 839 IEEE80211_AUTH_SHARED_CHALLENGE = 2, 840 IEEE80211_AUTH_SHARED_RESPONSE = 3, 841 IEEE80211_AUTH_SHARED_PASS = 4, 842}; 843 844/* 845 * Reason and status codes. 846 * 847 * Reason codes are used in management frames to indicate why an 848 * action took place (e.g. on disassociation). Status codes are 849 * used in management frames to indicate the result of an operation. 850 * 851 * Unlisted codes are reserved 852 */ 853 854enum { 855 IEEE80211_REASON_UNSPECIFIED = 1, 856 IEEE80211_REASON_AUTH_EXPIRE = 2, 857 IEEE80211_REASON_AUTH_LEAVE = 3, 858 IEEE80211_REASON_ASSOC_EXPIRE = 4, 859 IEEE80211_REASON_ASSOC_TOOMANY = 5, 860 IEEE80211_REASON_NOT_AUTHED = 6, 861 IEEE80211_REASON_NOT_ASSOCED = 7, 862 IEEE80211_REASON_ASSOC_LEAVE = 8, 863 IEEE80211_REASON_ASSOC_NOT_AUTHED = 9, 864 IEEE80211_REASON_DISASSOC_PWRCAP_BAD = 10, /* 11h */ 865 IEEE80211_REASON_DISASSOC_SUPCHAN_BAD = 11, /* 11h */ 866 IEEE80211_REASON_IE_INVALID = 13, /* 11i */ 867 IEEE80211_REASON_MIC_FAILURE = 14, /* 11i */ 868 IEEE80211_REASON_4WAY_HANDSHAKE_TIMEOUT = 15, /* 11i */ 869 IEEE80211_REASON_GROUP_KEY_UPDATE_TIMEOUT = 16, /* 11i */ 870 IEEE80211_REASON_IE_IN_4WAY_DIFFERS = 17, /* 11i */ 871 IEEE80211_REASON_GROUP_CIPHER_INVALID = 18, /* 11i */ 872 IEEE80211_REASON_PAIRWISE_CIPHER_INVALID= 19, /* 11i */ 873 IEEE80211_REASON_AKMP_INVALID = 20, /* 11i */ 874 IEEE80211_REASON_UNSUPP_RSN_IE_VERSION = 21, /* 11i */ 875 IEEE80211_REASON_INVALID_RSN_IE_CAP = 22, /* 11i */ 876 IEEE80211_REASON_802_1X_AUTH_FAILED = 23, /* 11i */ 877 IEEE80211_REASON_CIPHER_SUITE_REJECTED = 24, /* 11i */ 878 IEEE80211_REASON_UNSPECIFIED_QOS = 32, /* 11e */ 879 IEEE80211_REASON_INSUFFICIENT_BW = 33, /* 11e */ 880 IEEE80211_REASON_TOOMANY_FRAMES = 34, /* 11e */ 881 IEEE80211_REASON_OUTSIDE_TXOP = 35, /* 11e */ 882 IEEE80211_REASON_LEAVING_QBSS = 36, /* 11e */ 883 IEEE80211_REASON_BAD_MECHANISM = 37, /* 11e */ 884 IEEE80211_REASON_SETUP_NEEDED = 38, /* 11e */ 885 IEEE80211_REASON_TIMEOUT = 39, /* 11e */ 886 887 IEEE80211_STATUS_SUCCESS = 0, 888 IEEE80211_STATUS_UNSPECIFIED = 1, 889 IEEE80211_STATUS_CAPINFO = 10, 890 IEEE80211_STATUS_NOT_ASSOCED = 11, 891 IEEE80211_STATUS_OTHER = 12, 892 IEEE80211_STATUS_ALG = 13, 893 IEEE80211_STATUS_SEQUENCE = 14, 894 IEEE80211_STATUS_CHALLENGE = 15, 895 IEEE80211_STATUS_TIMEOUT = 16, 896 IEEE80211_STATUS_TOOMANY = 17, 897 IEEE80211_STATUS_BASIC_RATE = 18, 898 IEEE80211_STATUS_SP_REQUIRED = 19, /* 11b */ 899 IEEE80211_STATUS_PBCC_REQUIRED = 20, /* 11b */ 900 IEEE80211_STATUS_CA_REQUIRED = 21, /* 11b */ 901 IEEE80211_STATUS_SPECMGMT_REQUIRED = 22, /* 11h */ 902 IEEE80211_STATUS_PWRCAP_REQUIRED = 23, /* 11h */ 903 IEEE80211_STATUS_SUPCHAN_REQUIRED = 24, /* 11h */ 904 IEEE80211_STATUS_SHORTSLOT_REQUIRED = 25, /* 11g */ 905 IEEE80211_STATUS_DSSSOFDM_REQUIRED = 26, /* 11g */ 906 IEEE80211_STATUS_INVALID_IE = 40, /* 11i */ 907 IEEE80211_STATUS_GROUP_CIPHER_INVALID = 41, /* 11i */ 908 IEEE80211_STATUS_PAIRWISE_CIPHER_INVALID = 42, /* 11i */ 909 IEEE80211_STATUS_AKMP_INVALID = 43, /* 11i */ 910 IEEE80211_STATUS_UNSUPP_RSN_IE_VERSION = 44, /* 11i */ 911 IEEE80211_STATUS_INVALID_RSN_IE_CAP = 45, /* 11i */ 912 IEEE80211_STATUS_CIPHER_SUITE_REJECTED = 46, /* 11i */ 913}; 914 915#define IEEE80211_WEP_KEYLEN 5 /* 40bit */ 916#define IEEE80211_WEP_IVLEN 3 /* 24bit */ 917#define IEEE80211_WEP_KIDLEN 1 /* 1 octet */ 918#define IEEE80211_WEP_CRCLEN 4 /* CRC-32 */ 919#define IEEE80211_WEP_TOTLEN (IEEE80211_WEP_IVLEN + \ 920 IEEE80211_WEP_KIDLEN + \ 921 IEEE80211_WEP_CRCLEN) 922#define IEEE80211_WEP_NKID 4 /* number of key ids */ 923 924/* 925 * 802.11i defines an extended IV for use with non-WEP ciphers. 926 * When the EXTIV bit is set in the key id byte an additional 927 * 4 bytes immediately follow the IV for TKIP. For CCMP the 928 * EXTIV bit is likewise set but the 8 bytes represent the 929 * CCMP header rather than IV+extended-IV. 930 */ 931#define IEEE80211_WEP_EXTIV 0x20 932#define IEEE80211_WEP_EXTIVLEN 4 /* extended IV length */ 933#define IEEE80211_WEP_MICLEN 8 /* trailing MIC */ 934 935#define IEEE80211_CRC_LEN 4 936 937/* 938 * Maximum acceptable MTU is: 939 * IEEE80211_MAX_LEN - WEP overhead - CRC - 940 * QoS overhead - RSN/WPA overhead 941 * Min is arbitrarily chosen > IEEE80211_MIN_LEN. The default 942 * mtu is Ethernet-compatible; it's set by ether_ifattach. 943 */ 944#define IEEE80211_MTU_MAX 2290 945#define IEEE80211_MTU_MIN 32 946 947#define IEEE80211_MAX_LEN (2300 + IEEE80211_CRC_LEN + \ 948 (IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN)) 949#define IEEE80211_ACK_LEN \ 950 (sizeof(struct ieee80211_frame_ack) + IEEE80211_CRC_LEN) 951#define IEEE80211_MIN_LEN \ 952 (sizeof(struct ieee80211_frame_min) + IEEE80211_CRC_LEN) 953 954/* 955 * The 802.11 spec says at most 2007 stations may be 956 * associated at once. For most AP's this is way more 957 * than is feasible so we use a default of IEEE80211_AID_DEF. 958 * This number may be overridden by the driver and/or by 959 * user configuration but may not be less than IEEE80211_AID_MIN 960 * (see _ieee80211.h for implementation-specific settings). 961 */ 962#define IEEE80211_AID_MAX 2007 963 964#define IEEE80211_AID(b) ((b) &~ 0xc000) 965 966/* 967 * RTS frame length parameters. The default is specified in 968 * the 802.11 spec as 512; we treat it as implementation-dependent 969 * so it's defined in ieee80211_var.h. The max may be wrong 970 * for jumbo frames. 971 */ 972#define IEEE80211_RTS_MIN 1 973#define IEEE80211_RTS_MAX 2346 974 975/* 976 * TX fragmentation parameters. As above for RTS, we treat 977 * default as implementation-dependent so define it elsewhere. 978 */ 979#define IEEE80211_FRAG_MIN 256 980#define IEEE80211_FRAG_MAX 2346 981 982/* 983 * Beacon interval (TU's). Min+max come from WiFi requirements. 984 * As above, we treat default as implementation-dependent so 985 * define it elsewhere. 986 */ 987#define IEEE80211_BINTVAL_MAX 1000 /* max beacon interval (TU's) */ 988#define IEEE80211_BINTVAL_MIN 25 /* min beacon interval (TU's) */ 989 990/* 991 * DTIM period (beacons). Min+max are not really defined 992 * by the protocol but we want them publicly visible so 993 * define them here. 994 */ 995#define IEEE80211_DTIM_MAX 15 /* max DTIM period */ 996#define IEEE80211_DTIM_MIN 1 /* min DTIM period */ 997 998/* 999 * Beacon miss threshold (beacons). As for DTIM, we define 1000 * them here to be publicly visible. Note the max may be 1001 * clamped depending on device capabilities. 1002 */ 1003#define IEEE80211_HWBMISS_MIN 1 1004#define IEEE80211_HWBMISS_MAX 255 1005 1006/* 1007 * 802.11 frame duration definitions. 1008 */ 1009 1010struct ieee80211_duration { 1011 uint16_t d_rts_dur; 1012 uint16_t d_data_dur; 1013 uint16_t d_plcp_len; 1014 uint8_t d_residue; /* unused octets in time slot */ 1015}; 1016 1017/* One Time Unit (TU) is 1Kus = 1024 microseconds. */ 1018#define IEEE80211_DUR_TU 1024 1019 1020/* IEEE 802.11b durations for DSSS PHY in microseconds */ 1021#define IEEE80211_DUR_DS_LONG_PREAMBLE 144 1022#define IEEE80211_DUR_DS_SHORT_PREAMBLE 72 1023 1024#define IEEE80211_DUR_DS_SLOW_PLCPHDR 48 1025#define IEEE80211_DUR_DS_FAST_PLCPHDR 24 1026#define IEEE80211_DUR_DS_SLOW_ACK 112 1027#define IEEE80211_DUR_DS_FAST_ACK 56 1028#define IEEE80211_DUR_DS_SLOW_CTS 112 1029#define IEEE80211_DUR_DS_FAST_CTS 56 1030 1031#define IEEE80211_DUR_DS_SLOT 20 1032#define IEEE80211_DUR_DS_SIFS 10 1033#define IEEE80211_DUR_DS_PIFS (IEEE80211_DUR_DS_SIFS + IEEE80211_DUR_DS_SLOT) 1034#define IEEE80211_DUR_DS_DIFS (IEEE80211_DUR_DS_SIFS + \ 1035 2 * IEEE80211_DUR_DS_SLOT) 1036#define IEEE80211_DUR_DS_EIFS (IEEE80211_DUR_DS_SIFS + \ 1037 IEEE80211_DUR_DS_SLOW_ACK + \ 1038 IEEE80211_DUR_DS_LONG_PREAMBLE + \ 1039 IEEE80211_DUR_DS_SLOW_PLCPHDR + \ 1040 IEEE80211_DUR_DIFS) 1041 1042#endif /* _NET80211_IEEE80211_H_ */ 1043