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