1/* 2 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. 3 * All rights reserved. 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License along 16 * with this program; if not, write to the Free Software Foundation, Inc., 17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * File: 80211hdr.h 20 * 21 * Purpose: 802.11 MAC headers related pre-defines and macros. 22 * 23 * Author: Lyndon Chen 24 * 25 * Date: Apr 8, 2002 26 */ 27 28#ifndef __80211HDR_H__ 29#define __80211HDR_H__ 30 31/* bit type */ 32#define BIT0 0x00000001 33#define BIT1 0x00000002 34#define BIT2 0x00000004 35#define BIT3 0x00000008 36#define BIT4 0x00000010 37#define BIT5 0x00000020 38#define BIT6 0x00000040 39#define BIT7 0x00000080 40#define BIT8 0x00000100 41#define BIT9 0x00000200 42#define BIT10 0x00000400 43#define BIT11 0x00000800 44#define BIT12 0x00001000 45#define BIT13 0x00002000 46#define BIT14 0x00004000 47#define BIT15 0x00008000 48#define BIT16 0x00010000 49#define BIT17 0x00020000 50#define BIT18 0x00040000 51#define BIT19 0x00080000 52#define BIT20 0x00100000 53#define BIT21 0x00200000 54#define BIT22 0x00400000 55#define BIT23 0x00800000 56#define BIT24 0x01000000 57#define BIT25 0x02000000 58#define BIT26 0x04000000 59#define BIT27 0x08000000 60#define BIT28 0x10000000 61#define BIT29 0x20000000 62#define BIT30 0x40000000 63#define BIT31 0x80000000 64 65/* 802.11 frame related, defined as 802.11 spec */ 66#define WLAN_ADDR_LEN 6 67#define WLAN_CRC_LEN 4 68#define WLAN_CRC32_LEN 4 69#define WLAN_FCS_LEN 4 70#define WLAN_BSSID_LEN 6 71#define WLAN_BSS_TS_LEN 8 72#define WLAN_HDR_ADDR2_LEN 16 73#define WLAN_HDR_ADDR3_LEN 24 74#define WLAN_HDR_ADDR4_LEN 30 75#define WLAN_IEHDR_LEN 2 76#define WLAN_SSID_MAXLEN 32 77#define WLAN_RATES_MAXLEN 16 78#define WLAN_RATES_MAXLEN_11B 4 79#define WLAN_RSN_MAXLEN 32 80#define WLAN_DATA_MAXLEN 2312 81#define WLAN_A3FR_MAXLEN (WLAN_HDR_ADDR3_LEN \ 82 + WLAN_DATA_MAXLEN \ 83 + WLAN_CRC_LEN) 84 85#define WLAN_BEACON_FR_MAXLEN WLAN_A3FR_MAXLEN 86#define WLAN_ATIM_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 0) 87#define WLAN_NULLDATA_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 0) 88#define WLAN_DISASSOC_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 2) 89#define WLAN_ASSOCREQ_FR_MAXLEN WLAN_A3FR_MAXLEN 90#define WLAN_ASSOCRESP_FR_MAXLEN WLAN_A3FR_MAXLEN 91#define WLAN_REASSOCREQ_FR_MAXLEN WLAN_A3FR_MAXLEN 92#define WLAN_REASSOCRESP_FR_MAXLEN WLAN_A3FR_MAXLEN 93#define WLAN_PROBEREQ_FR_MAXLEN WLAN_A3FR_MAXLEN 94#define WLAN_PROBERESP_FR_MAXLEN WLAN_A3FR_MAXLEN 95#define WLAN_AUTHEN_FR_MAXLEN WLAN_A3FR_MAXLEN 96#define WLAN_DEAUTHEN_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 2) 97 98#define WLAN_WEP_NKEYS 4 99#define WLAN_WEP40_KEYLEN 5 100#define WLAN_WEP104_KEYLEN 13 101#define WLAN_WEP232_KEYLEN 29 102#define WLAN_WEPMAX_KEYLEN 32 103#define WLAN_CHALLENGE_IE_MAXLEN 255 104#define WLAN_CHALLENGE_IE_LEN 130 105#define WLAN_CHALLENGE_LEN 128 106#define WLAN_WEP_IV_LEN 4 107#define WLAN_WEP_ICV_LEN 4 108#define WLAN_FRAGS_MAX 16 109 110/* Frame Type */ 111#define WLAN_TYPE_MGR 0x00 112#define WLAN_TYPE_CTL 0x01 113#define WLAN_TYPE_DATA 0x02 114 115#define WLAN_FTYPE_MGMT 0x00 116#define WLAN_FTYPE_CTL 0x01 117#define WLAN_FTYPE_DATA 0x02 118 119/* Frame Subtypes */ 120#define WLAN_FSTYPE_ASSOCREQ 0x00 121#define WLAN_FSTYPE_ASSOCRESP 0x01 122#define WLAN_FSTYPE_REASSOCREQ 0x02 123#define WLAN_FSTYPE_REASSOCRESP 0x03 124#define WLAN_FSTYPE_PROBEREQ 0x04 125#define WLAN_FSTYPE_PROBERESP 0x05 126#define WLAN_FSTYPE_BEACON 0x08 127#define WLAN_FSTYPE_ATIM 0x09 128#define WLAN_FSTYPE_DISASSOC 0x0a 129#define WLAN_FSTYPE_AUTHEN 0x0b 130#define WLAN_FSTYPE_DEAUTHEN 0x0c 131#define WLAN_FSTYPE_ACTION 0x0d 132 133/* Control */ 134#define WLAN_FSTYPE_PSPOLL 0x0a 135#define WLAN_FSTYPE_RTS 0x0b 136#define WLAN_FSTYPE_CTS 0x0c 137#define WLAN_FSTYPE_ACK 0x0d 138#define WLAN_FSTYPE_CFEND 0x0e 139#define WLAN_FSTYPE_CFENDCFACK 0x0f 140 141/* Data */ 142#define WLAN_FSTYPE_DATAONLY 0x00 143#define WLAN_FSTYPE_DATA_CFACK 0x01 144#define WLAN_FSTYPE_DATA_CFPOLL 0x02 145#define WLAN_FSTYPE_DATA_CFACK_CFPOLL 0x03 146#define WLAN_FSTYPE_NULL 0x04 147#define WLAN_FSTYPE_CFACK 0x05 148#define WLAN_FSTYPE_CFPOLL 0x06 149#define WLAN_FSTYPE_CFACK_CFPOLL 0x07 150 151#ifdef __BIG_ENDIAN 152 153/* GET & SET Frame Control bit */ 154#define WLAN_GET_FC_PRVER(n) ((((u16)(n) >> 8) & (BIT0 | BIT1)) 155#define WLAN_GET_FC_FTYPE(n) ((((u16)(n) >> 8) & (BIT2 | BIT3)) >> 2) 156#define WLAN_GET_FC_FSTYPE(n) ((((u16)(n) >> 8) \ 157 & (BIT4|BIT5|BIT6|BIT7)) >> 4) 158#define WLAN_GET_FC_TODS(n) ((((u16)(n) << 8) & (BIT8)) >> 8) 159#define WLAN_GET_FC_FROMDS(n) ((((u16)(n) << 8) & (BIT9)) >> 9) 160#define WLAN_GET_FC_MOREFRAG(n) ((((u16)(n) << 8) & (BIT10)) >> 10) 161#define WLAN_GET_FC_RETRY(n) ((((u16)(n) << 8) & (BIT11)) >> 11) 162#define WLAN_GET_FC_PWRMGT(n) ((((u16)(n) << 8) & (BIT12)) >> 12) 163#define WLAN_GET_FC_MOREDATA(n) ((((u16)(n) << 8) & (BIT13)) >> 13) 164#define WLAN_GET_FC_ISWEP(n) ((((u16)(n) << 8) & (BIT14)) >> 14) 165#define WLAN_GET_FC_ORDER(n) ((((u16)(n) << 8) & (BIT15)) >> 15) 166 167/* Sequence Field bit */ 168#define WLAN_GET_SEQ_FRGNUM(n) (((u16)(n) >> 8) & (BIT0|BIT1|BIT2|BIT3)) 169#define WLAN_GET_SEQ_SEQNUM(n) ((((u16)(n) >> 8) \ 170 & (~(BIT0|BIT1|BIT2|BIT3))) >> 4) 171 172/* Capability Field bit */ 173#define WLAN_GET_CAP_INFO_ESS(n) (((n) >> 8) & BIT0) 174#define WLAN_GET_CAP_INFO_IBSS(n) ((((n) >> 8) & BIT1) >> 1) 175#define WLAN_GET_CAP_INFO_CFPOLLABLE(n) ((((n) >> 8) & BIT2) >> 2) 176#define WLAN_GET_CAP_INFO_CFPOLLREQ(n) ((((n) >> 8) & BIT3) >> 3) 177#define WLAN_GET_CAP_INFO_PRIVACY(n) ((((n) >> 8) & BIT4) >> 4) 178#define WLAN_GET_CAP_INFO_SHORTPREAMBLE(n) ((((n) >> 8) & BIT5) >> 5) 179#define WLAN_GET_CAP_INFO_PBCC(n) ((((n) >> 8) & BIT6) >> 6) 180#define WLAN_GET_CAP_INFO_AGILITY(n) ((((n) >> 8) & BIT7) >> 7) 181#define WLAN_GET_CAP_INFO_SPECTRUMMNG(n) ((((n)) & BIT8) >> 10) 182#define WLAN_GET_CAP_INFO_SHORTSLOTTIME(n) ((((n)) & BIT10) >> 10) 183#define WLAN_GET_CAP_INFO_DSSSOFDM(n) ((((n)) & BIT13) >> 13) 184#define WLAN_GET_CAP_INFO_GRPACK(n) ((((n)) & BIT14) >> 14) 185 186#else 187 188/* GET & SET Frame Control bit */ 189#define WLAN_GET_FC_PRVER(n) (((u16)(n)) & (BIT0 | BIT1)) 190#define WLAN_GET_FC_FTYPE(n) ((((u16)(n)) & (BIT2 | BIT3)) >> 2) 191#define WLAN_GET_FC_FSTYPE(n) ((((u16)(n)) & (BIT4|BIT5|BIT6|BIT7)) >> 4) 192#define WLAN_GET_FC_TODS(n) ((((u16)(n)) & (BIT8)) >> 8) 193#define WLAN_GET_FC_FROMDS(n) ((((u16)(n)) & (BIT9)) >> 9) 194#define WLAN_GET_FC_MOREFRAG(n) ((((u16)(n)) & (BIT10)) >> 10) 195#define WLAN_GET_FC_RETRY(n) ((((u16)(n)) & (BIT11)) >> 11) 196#define WLAN_GET_FC_PWRMGT(n) ((((u16)(n)) & (BIT12)) >> 12) 197#define WLAN_GET_FC_MOREDATA(n) ((((u16)(n)) & (BIT13)) >> 13) 198#define WLAN_GET_FC_ISWEP(n) ((((u16)(n)) & (BIT14)) >> 14) 199#define WLAN_GET_FC_ORDER(n) ((((u16)(n)) & (BIT15)) >> 15) 200 201/* Sequence Field bit */ 202#define WLAN_GET_SEQ_FRGNUM(n) (((u16)(n)) & (BIT0|BIT1|BIT2|BIT3)) 203#define WLAN_GET_SEQ_SEQNUM(n) ((((u16)(n)) & (~(BIT0|BIT1|BIT2|BIT3))) >> 4) 204 205/* Capability Field bit */ 206#define WLAN_GET_CAP_INFO_ESS(n) ((n) & BIT0) 207#define WLAN_GET_CAP_INFO_IBSS(n) (((n) & BIT1) >> 1) 208#define WLAN_GET_CAP_INFO_CFPOLLABLE(n) (((n) & BIT2) >> 2) 209#define WLAN_GET_CAP_INFO_CFPOLLREQ(n) (((n) & BIT3) >> 3) 210#define WLAN_GET_CAP_INFO_PRIVACY(n) (((n) & BIT4) >> 4) 211#define WLAN_GET_CAP_INFO_SHORTPREAMBLE(n) (((n) & BIT5) >> 5) 212#define WLAN_GET_CAP_INFO_PBCC(n) (((n) & BIT6) >> 6) 213#define WLAN_GET_CAP_INFO_AGILITY(n) (((n) & BIT7) >> 7) 214#define WLAN_GET_CAP_INFO_SPECTRUMMNG(n) (((n) & BIT8) >> 10) 215#define WLAN_GET_CAP_INFO_SHORTSLOTTIME(n) (((n) & BIT10) >> 10) 216#define WLAN_GET_CAP_INFO_DSSSOFDM(n) (((n) & BIT13) >> 13) 217#define WLAN_GET_CAP_INFO_GRPACK(n) (((n) & BIT14) >> 14) 218 219#endif /* #ifdef __BIG_ENDIAN */ 220 221#define WLAN_SET_CAP_INFO_ESS(n) (n) 222#define WLAN_SET_CAP_INFO_IBSS(n) ((n) << 1) 223#define WLAN_SET_CAP_INFO_CFPOLLABLE(n) ((n) << 2) 224#define WLAN_SET_CAP_INFO_CFPOLLREQ(n) ((n) << 3) 225#define WLAN_SET_CAP_INFO_PRIVACY(n) ((n) << 4) 226#define WLAN_SET_CAP_INFO_SHORTPREAMBLE(n) ((n) << 5) 227#define WLAN_SET_CAP_INFO_SPECTRUMMNG(n) ((n) << 8) 228#define WLAN_SET_CAP_INFO_PBCC(n) ((n) << 6) 229#define WLAN_SET_CAP_INFO_AGILITY(n) ((n) << 7) 230#define WLAN_SET_CAP_INFO_SHORTSLOTTIME(n) ((n) << 10) 231#define WLAN_SET_CAP_INFO_DSSSOFDM(n) ((n) << 13) 232#define WLAN_SET_CAP_INFO_GRPACK(n) ((n) << 14) 233 234#define WLAN_SET_FC_PRVER(n) ((u16)(n)) 235#define WLAN_SET_FC_FTYPE(n) (((u16)(n)) << 2) 236#define WLAN_SET_FC_FSTYPE(n) (((u16)(n)) << 4) 237#define WLAN_SET_FC_TODS(n) (((u16)(n)) << 8) 238#define WLAN_SET_FC_FROMDS(n) (((u16)(n)) << 9) 239#define WLAN_SET_FC_MOREFRAG(n) (((u16)(n)) << 10) 240#define WLAN_SET_FC_RETRY(n) (((u16)(n)) << 11) 241#define WLAN_SET_FC_PWRMGT(n) (((u16)(n)) << 12) 242#define WLAN_SET_FC_MOREDATA(n) (((u16)(n)) << 13) 243#define WLAN_SET_FC_ISWEP(n) (((u16)(n)) << 14) 244#define WLAN_SET_FC_ORDER(n) (((u16)(n)) << 15) 245 246#define WLAN_SET_SEQ_FRGNUM(n) ((u16)(n)) 247#define WLAN_SET_SEQ_SEQNUM(n) (((u16)(n)) << 4) 248 249/* ERP Field bit */ 250 251#define WLAN_GET_ERP_NONERP_PRESENT(n) ((n) & BIT0) 252#define WLAN_GET_ERP_USE_PROTECTION(n) (((n) & BIT1) >> 1) 253#define WLAN_GET_ERP_BARKER_MODE(n) (((n) & BIT2) >> 2) 254 255#define WLAN_SET_ERP_NONERP_PRESENT(n) (n) 256#define WLAN_SET_ERP_USE_PROTECTION(n) ((n) << 1) 257#define WLAN_SET_ERP_BARKER_MODE(n) ((n) << 2) 258 259/* Support & Basic Rates field */ 260#define WLAN_MGMT_IS_BASICRATE(b) ((b) & BIT7) 261#define WLAN_MGMT_GET_RATE(b) ((b) & ~BIT7) 262 263/* TIM field */ 264#define WLAN_MGMT_IS_MULTICAST_TIM(b) ((b) & BIT0) 265#define WLAN_MGMT_GET_TIM_OFFSET(b) (((b) & ~BIT0) >> 1) 266 267/* 3-Addr & 4-Addr */ 268#define WLAN_HDR_A3_DATA_PTR(p) (((u8 *)(p)) + WLAN_HDR_ADDR3_LEN) 269#define WLAN_HDR_A4_DATA_PTR(p) (((u8 *)(p)) + WLAN_HDR_ADDR4_LEN) 270 271/* IEEE ADDR */ 272#define IEEE_ADDR_UNIVERSAL 0x02 273#define IEEE_ADDR_GROUP 0x01 274 275typedef struct { 276 u8 abyAddr[6]; 277} IEEE_ADDR, *PIEEE_ADDR; 278 279/* 802.11 Header Format */ 280 281typedef struct tagWLAN_80211HDR_A2 { 282 283 u16 wFrameCtl; 284 u16 wDurationID; 285 u8 abyAddr1[WLAN_ADDR_LEN]; 286 u8 abyAddr2[WLAN_ADDR_LEN]; 287 288} __attribute__ ((__packed__)) 289WLAN_80211HDR_A2, *PWLAN_80211HDR_A2; 290 291typedef struct tagWLAN_80211HDR_A3 { 292 293 u16 wFrameCtl; 294 u16 wDurationID; 295 u8 abyAddr1[WLAN_ADDR_LEN]; 296 u8 abyAddr2[WLAN_ADDR_LEN]; 297 u8 abyAddr3[WLAN_ADDR_LEN]; 298 u16 wSeqCtl; 299 300} __attribute__ ((__packed__)) 301WLAN_80211HDR_A3, *PWLAN_80211HDR_A3; 302 303typedef struct tagWLAN_80211HDR_A4 { 304 305 u16 wFrameCtl; 306 u16 wDurationID; 307 u8 abyAddr1[WLAN_ADDR_LEN]; 308 u8 abyAddr2[WLAN_ADDR_LEN]; 309 u8 abyAddr3[WLAN_ADDR_LEN]; 310 u16 wSeqCtl; 311 u8 abyAddr4[WLAN_ADDR_LEN]; 312 313} __attribute__ ((__packed__)) 314WLAN_80211HDR_A4, *PWLAN_80211HDR_A4; 315 316typedef union tagUWLAN_80211HDR { 317 318 WLAN_80211HDR_A2 sA2; 319 WLAN_80211HDR_A3 sA3; 320 WLAN_80211HDR_A4 sA4; 321 322} UWLAN_80211HDR, *PUWLAN_80211HDR; 323 324#endif /* __80211HDR_H__ */ 325