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: Defines the macros, types, and functions for dealing
22 * with 802.11 MAC headers.
23 *
24 * Author: Lyndon Chen
25 *
26 * Date: Apr 8, 2002
27 *
28 */
29
30
31
32 #ifndef __80211HDR_H__
33 #define __80211HDR_H__
34
35
36 #if !defined(__TTYPE_H__)
37 #include "ttype.h"
38 #endif
39
40 /*--------------------- Export Definitions -------------------------*/
41 // bit type
42 #define BIT0 0x00000001
43 #define BIT1 0x00000002
44 #define BIT2 0x00000004
45 #define BIT3 0x00000008
46 #define BIT4 0x00000010
47 #define BIT5 0x00000020
48 #define BIT6 0x00000040
49 #define BIT7 0x00000080
50 #define BIT8 0x00000100
51 #define BIT9 0x00000200
52 #define BIT10 0x00000400
53 #define BIT11 0x00000800
54 #define BIT12 0x00001000
55 #define BIT13 0x00002000
56 #define BIT14 0x00004000
57 #define BIT15 0x00008000
58 #define BIT16 0x00010000
59 #define BIT17 0x00020000
60 #define BIT18 0x00040000
61 #define BIT19 0x00080000
62 #define BIT20 0x00100000
63 #define BIT21 0x00200000
64 #define BIT22 0x00400000
65 #define BIT23 0x00800000
66 #define BIT24 0x01000000
67 #define BIT25 0x02000000
68 #define BIT26 0x04000000
69 #define BIT27 0x08000000
70 #define BIT28 0x10000000
71 #define BIT29 0x20000000
72 #define BIT30 0x40000000
73 #define BIT31 0x80000000
74
75 // 802.11 frame related, defined as 802.11 spec
76 #define WLAN_ADDR_LEN 6
77 #define WLAN_CRC_LEN 4
78 #define WLAN_CRC32_LEN 4
79 #define WLAN_FCS_LEN 4
80 #define WLAN_BSSID_LEN 6
81 #define WLAN_BSS_TS_LEN 8
82 #define WLAN_HDR_ADDR2_LEN 16
83 #define WLAN_HDR_ADDR3_LEN 24
84 #define WLAN_HDR_ADDR4_LEN 30
85 #define WLAN_IEHDR_LEN 2
86 #define WLAN_SSID_MAXLEN 32
87 //#define WLAN_RATES_MAXLEN 255
88 #define WLAN_RATES_MAXLEN 16
89 #define WLAN_RATES_MAXLEN_11B 4
90 #define WLAN_RSN_MAXLEN 32
91 #define WLAN_DATA_MAXLEN 2312
92 #define WLAN_A3FR_MAXLEN (WLAN_HDR_ADDR3_LEN + WLAN_DATA_MAXLEN + WLAN_CRC_LEN)
93
94
95 #define WLAN_BEACON_FR_MAXLEN WLAN_A3FR_MAXLEN
96 #define WLAN_ATIM_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 0)
97 #define WLAN_NULLDATA_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 0)
98 #define WLAN_DISASSOC_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 2)
99 #define WLAN_ASSOCREQ_FR_MAXLEN WLAN_A3FR_MAXLEN
100 #define WLAN_ASSOCRESP_FR_MAXLEN WLAN_A3FR_MAXLEN
101 #define WLAN_REASSOCREQ_FR_MAXLEN WLAN_A3FR_MAXLEN
102 #define WLAN_REASSOCRESP_FR_MAXLEN WLAN_A3FR_MAXLEN
103 #define WLAN_PROBEREQ_FR_MAXLEN WLAN_A3FR_MAXLEN
104 #define WLAN_PROBERESP_FR_MAXLEN WLAN_A3FR_MAXLEN
105 #define WLAN_AUTHEN_FR_MAXLEN WLAN_A3FR_MAXLEN
106 #define WLAN_DEAUTHEN_FR_MAXLEN (WLAN_HDR_ADDR3_LEN + 2)
107
108
109 #define WLAN_WEP_NKEYS 4
110 #define WLAN_WEP40_KEYLEN 5
111 #define WLAN_WEP104_KEYLEN 13
112 #define WLAN_WEP232_KEYLEN 29
113 //#define WLAN_WEPMAX_KEYLEN 29
114 #define WLAN_WEPMAX_KEYLEN 32
115 #define WLAN_CHALLENGE_IE_MAXLEN 255
116 #define WLAN_CHALLENGE_IE_LEN 130
117 #define WLAN_CHALLENGE_LEN 128
118 #define WLAN_WEP_IV_LEN 4
119 #define WLAN_WEP_ICV_LEN 4
120 #define WLAN_FRAGS_MAX 16
121
122 // Frame Type
123 #define WLAN_TYPE_MGR 0x00
124 #define WLAN_TYPE_CTL 0x01
125 #define WLAN_TYPE_DATA 0x02
126
127 #define WLAN_FTYPE_MGMT 0x00
128 #define WLAN_FTYPE_CTL 0x01
129 #define WLAN_FTYPE_DATA 0x02
130
131
132 // Frame Subtypes
133 #define WLAN_FSTYPE_ASSOCREQ 0x00
134 #define WLAN_FSTYPE_ASSOCRESP 0x01
135 #define WLAN_FSTYPE_REASSOCREQ 0x02
136 #define WLAN_FSTYPE_REASSOCRESP 0x03
137 #define WLAN_FSTYPE_PROBEREQ 0x04
138 #define WLAN_FSTYPE_PROBERESP 0x05
139 #define WLAN_FSTYPE_BEACON 0x08
140 #define WLAN_FSTYPE_ATIM 0x09
141 #define WLAN_FSTYPE_DISASSOC 0x0a
142 #define WLAN_FSTYPE_AUTHEN 0x0b
143 #define WLAN_FSTYPE_DEAUTHEN 0x0c
144 #define WLAN_FSTYPE_ACTION 0x0d
145
146 // Control
147 #define WLAN_FSTYPE_PSPOLL 0x0a
148 #define WLAN_FSTYPE_RTS 0x0b
149 #define WLAN_FSTYPE_CTS 0x0c
150 #define WLAN_FSTYPE_ACK 0x0d
151 #define WLAN_FSTYPE_CFEND 0x0e
152 #define WLAN_FSTYPE_CFENDCFACK 0x0f
153
154 // Data
155 #define WLAN_FSTYPE_DATAONLY 0x00
156 #define WLAN_FSTYPE_DATA_CFACK 0x01
157 #define WLAN_FSTYPE_DATA_CFPOLL 0x02
158 #define WLAN_FSTYPE_DATA_CFACK_CFPOLL 0x03
159 #define WLAN_FSTYPE_NULL 0x04
160 #define WLAN_FSTYPE_CFACK 0x05
161 #define WLAN_FSTYPE_CFPOLL 0x06
162 #define WLAN_FSTYPE_CFACK_CFPOLL 0x07
163
164
165 #ifdef __BIG_ENDIAN
166
167 // GET & SET Frame Control bit
168 #define WLAN_GET_FC_PRVER(n) ((((WORD)(n) >> 8) & (BIT0 | BIT1))
169 #define WLAN_GET_FC_FTYPE(n) ((((WORD)(n) >> 8) & (BIT2 | BIT3)) >> 2)
170 #define WLAN_GET_FC_FSTYPE(n) ((((WORD)(n) >> 8) & (BIT4|BIT5|BIT6|BIT7)) >> 4)
171 #define WLAN_GET_FC_TODS(n) ((((WORD)(n) << 8) & (BIT8)) >> 8)
172 #define WLAN_GET_FC_FROMDS(n) ((((WORD)(n) << 8) & (BIT9)) >> 9)
173 #define WLAN_GET_FC_MOREFRAG(n) ((((WORD)(n) << 8) & (BIT10)) >> 10)
174 #define WLAN_GET_FC_RETRY(n) ((((WORD)(n) << 8) & (BIT11)) >> 11)
175 #define WLAN_GET_FC_PWRMGT(n) ((((WORD)(n) << 8) & (BIT12)) >> 12)
176 #define WLAN_GET_FC_MOREDATA(n) ((((WORD)(n) << 8) & (BIT13)) >> 13)
177 #define WLAN_GET_FC_ISWEP(n) ((((WORD)(n) << 8) & (BIT14)) >> 14)
178 #define WLAN_GET_FC_ORDER(n) ((((WORD)(n) << 8) & (BIT15)) >> 15)
179
180 // Sequence Field bit
181 #define WLAN_GET_SEQ_FRGNUM(n) (((WORD)(n) >> 8) & (BIT0|BIT1|BIT2|BIT3))
182 #define WLAN_GET_SEQ_SEQNUM(n) ((((WORD)(n) >> 8) & (~(BIT0|BIT1|BIT2|BIT3))) >> 4)
183
184
185 // Capability Field bit
186 #define WLAN_GET_CAP_INFO_ESS(n) (((n) >> 8) & BIT0)
187 #define WLAN_GET_CAP_INFO_IBSS(n) ((((n) >> 8) & BIT1) >> 1)
188 #define WLAN_GET_CAP_INFO_CFPOLLABLE(n) ((((n) >> 8) & BIT2) >> 2)
189 #define WLAN_GET_CAP_INFO_CFPOLLREQ(n) ((((n) >> 8) & BIT3) >> 3)
190 #define WLAN_GET_CAP_INFO_PRIVACY(n) ((((n) >> 8) & BIT4) >> 4)
191 #define WLAN_GET_CAP_INFO_SHORTPREAMBLE(n) ((((n) >> 8) & BIT5) >> 5)
192 #define WLAN_GET_CAP_INFO_PBCC(n) ((((n) >> 8) & BIT6) >> 6)
193 #define WLAN_GET_CAP_INFO_AGILITY(n) ((((n) >> 8) & BIT7) >> 7)
194 #define WLAN_GET_CAP_INFO_SPECTRUMMNG(n) ((((n)) & BIT8) >> 10)
195 #define WLAN_GET_CAP_INFO_SHORTSLOTTIME(n) ((((n)) & BIT10) >> 10)
196 #define WLAN_GET_CAP_INFO_DSSSOFDM(n) ((((n)) & BIT13) >> 13)
197 #define WLAN_GET_CAP_INFO_GRPACK(n) ((((n)) & BIT14) >> 14)
198
199
200 #else
201
202 // GET & SET Frame Control bit
203 #define WLAN_GET_FC_PRVER(n) (((WORD)(n)) & (BIT0 | BIT1))
204 #define WLAN_GET_FC_FTYPE(n) ((((WORD)(n)) & (BIT2 | BIT3)) >> 2)
205 #define WLAN_GET_FC_FSTYPE(n) ((((WORD)(n)) & (BIT4|BIT5|BIT6|BIT7)) >> 4)
206 #define WLAN_GET_FC_TODS(n) ((((WORD)(n)) & (BIT8)) >> 8)
207 #define WLAN_GET_FC_FROMDS(n) ((((WORD)(n)) & (BIT9)) >> 9)
208 #define WLAN_GET_FC_MOREFRAG(n) ((((WORD)(n)) & (BIT10)) >> 10)
209 #define WLAN_GET_FC_RETRY(n) ((((WORD)(n)) & (BIT11)) >> 11)
210 #define WLAN_GET_FC_PWRMGT(n) ((((WORD)(n)) & (BIT12)) >> 12)
211 #define WLAN_GET_FC_MOREDATA(n) ((((WORD)(n)) & (BIT13)) >> 13)
212 #define WLAN_GET_FC_ISWEP(n) ((((WORD)(n)) & (BIT14)) >> 14)
213 #define WLAN_GET_FC_ORDER(n) ((((WORD)(n)) & (BIT15)) >> 15)
214
215
216 // Sequence Field bit
217 #define WLAN_GET_SEQ_FRGNUM(n) (((WORD)(n)) & (BIT0|BIT1|BIT2|BIT3))
218 #define WLAN_GET_SEQ_SEQNUM(n) ((((WORD)(n)) & (~(BIT0|BIT1|BIT2|BIT3))) >> 4)
219
220
221 // Capability Field bit
222 #define WLAN_GET_CAP_INFO_ESS(n) ((n) & BIT0)
223 #define WLAN_GET_CAP_INFO_IBSS(n) (((n) & BIT1) >> 1)
224 #define WLAN_GET_CAP_INFO_CFPOLLABLE(n) (((n) & BIT2) >> 2)
225 #define WLAN_GET_CAP_INFO_CFPOLLREQ(n) (((n) & BIT3) >> 3)
226 #define WLAN_GET_CAP_INFO_PRIVACY(n) (((n) & BIT4) >> 4)
227 #define WLAN_GET_CAP_INFO_SHORTPREAMBLE(n) (((n) & BIT5) >> 5)
228 #define WLAN_GET_CAP_INFO_PBCC(n) (((n) & BIT6) >> 6)
229 #define WLAN_GET_CAP_INFO_AGILITY(n) (((n) & BIT7) >> 7)
230 #define WLAN_GET_CAP_INFO_SPECTRUMMNG(n) (((n) & BIT8) >> 10)
231 #define WLAN_GET_CAP_INFO_SHORTSLOTTIME(n) (((n) & BIT10) >> 10)
232 #define WLAN_GET_CAP_INFO_DSSSOFDM(n) (((n) & BIT13) >> 13)
233 #define WLAN_GET_CAP_INFO_GRPACK(n) (((n) & BIT14) >> 14)
234
235
236 #endif //#ifdef __BIG_ENDIAN
237
238
239 #define WLAN_SET_CAP_INFO_ESS(n) (n)
240 #define WLAN_SET_CAP_INFO_IBSS(n) ((n) << 1)
241 #define WLAN_SET_CAP_INFO_CFPOLLABLE(n) ((n) << 2)
242 #define WLAN_SET_CAP_INFO_CFPOLLREQ(n) ((n) << 3)
243 #define WLAN_SET_CAP_INFO_PRIVACY(n) ((n) << 4)
244 #define WLAN_SET_CAP_INFO_SHORTPREAMBLE(n) ((n) << 5)
245 #define WLAN_SET_CAP_INFO_SPECTRUMMNG(n) ((n) << 8)
246 #define WLAN_SET_CAP_INFO_PBCC(n) ((n) << 6)
247 #define WLAN_SET_CAP_INFO_AGILITY(n) ((n) << 7)
248 #define WLAN_SET_CAP_INFO_SHORTSLOTTIME(n) ((n) << 10)
249 #define WLAN_SET_CAP_INFO_DSSSOFDM(n) ((n) << 13)
250 #define WLAN_SET_CAP_INFO_GRPACK(n) ((n) << 14)
251
252
253 #define WLAN_SET_FC_PRVER(n) ((WORD)(n))
254 #define WLAN_SET_FC_FTYPE(n) (((WORD)(n)) << 2)
255 #define WLAN_SET_FC_FSTYPE(n) (((WORD)(n)) << 4)
256 #define WLAN_SET_FC_TODS(n) (((WORD)(n)) << 8)
257 #define WLAN_SET_FC_FROMDS(n) (((WORD)(n)) << 9)
258 #define WLAN_SET_FC_MOREFRAG(n) (((WORD)(n)) << 10)
259 #define WLAN_SET_FC_RETRY(n) (((WORD)(n)) << 11)
260 #define WLAN_SET_FC_PWRMGT(n) (((WORD)(n)) << 12)
261 #define WLAN_SET_FC_MOREDATA(n) (((WORD)(n)) << 13)
262 #define WLAN_SET_FC_ISWEP(n) (((WORD)(n)) << 14)
263 #define WLAN_SET_FC_ORDER(n) (((WORD)(n)) << 15)
264
265 #define WLAN_SET_SEQ_FRGNUM(n) ((WORD)(n))
266 #define WLAN_SET_SEQ_SEQNUM(n) (((WORD)(n)) << 4)
267
268 // ERP Field bit
269
270 #define WLAN_GET_ERP_NONERP_PRESENT(n) ((n) & BIT0)
271 #define WLAN_GET_ERP_USE_PROTECTION(n) (((n) & BIT1) >> 1)
272 #define WLAN_GET_ERP_BARKER_MODE(n) (((n) & BIT2) >> 2)
273
274 #define WLAN_SET_ERP_NONERP_PRESENT(n) (n)
275 #define WLAN_SET_ERP_USE_PROTECTION(n) ((n) << 1)
276 #define WLAN_SET_ERP_BARKER_MODE(n) ((n) << 2)
277
278
279
280 // Support & Basic Rates field
281 #define WLAN_MGMT_IS_BASICRATE(b) ((b) & BIT7)
282 #define WLAN_MGMT_GET_RATE(b) ((b) & ~BIT7)
283
284 // TIM field
285 #define WLAN_MGMT_IS_MULTICAST_TIM(b) ((b) & BIT0)
286 #define WLAN_MGMT_GET_TIM_OFFSET(b) (((b) & ~BIT0) >> 1)
287
288 // 3-Addr & 4-Addr
289 #define WLAN_HDR_A3_DATA_PTR(p) (((PBYTE)(p)) + WLAN_HDR_ADDR3_LEN)
290 #define WLAN_HDR_A4_DATA_PTR(p) (((PBYTE)(p)) + WLAN_HDR_ADDR4_LEN)
291
292 // IEEE ADDR
293 #define IEEE_ADDR_UNIVERSAL 0x02
294 #define IEEE_ADDR_GROUP 0x01
295
296 typedef struct {
297 BYTE abyAddr[6];
298 } IEEE_ADDR, *PIEEE_ADDR;
299
300 // 802.11 Header Format
301
302 typedef struct tagWLAN_80211HDR_A2 {
303
304 WORD wFrameCtl;
305 WORD wDurationID;
306 BYTE abyAddr1[WLAN_ADDR_LEN];
307 BYTE abyAddr2[WLAN_ADDR_LEN];
308
309 }__attribute__ ((__packed__))
310 WLAN_80211HDR_A2, *PWLAN_80211HDR_A2;
311
312 typedef struct tagWLAN_80211HDR_A3 {
313
314 WORD wFrameCtl;
315 WORD wDurationID;
316 BYTE abyAddr1[WLAN_ADDR_LEN];
317 BYTE abyAddr2[WLAN_ADDR_LEN];
318 BYTE abyAddr3[WLAN_ADDR_LEN];
319 WORD wSeqCtl;
320
321 }__attribute__ ((__packed__))
322 WLAN_80211HDR_A3, *PWLAN_80211HDR_A3;
323
324 typedef struct tagWLAN_80211HDR_A4 {
325
326 WORD wFrameCtl;
327 WORD wDurationID;
328 BYTE abyAddr1[WLAN_ADDR_LEN];
329 BYTE abyAddr2[WLAN_ADDR_LEN];
330 BYTE abyAddr3[WLAN_ADDR_LEN];
331 WORD wSeqCtl;
332 BYTE abyAddr4[WLAN_ADDR_LEN];
333
334 }__attribute__ ((__packed__))
335 WLAN_80211HDR_A4, *PWLAN_80211HDR_A4;
336
337
338 typedef union tagUWLAN_80211HDR {
339
340 WLAN_80211HDR_A2 sA2;
341 WLAN_80211HDR_A3 sA3;
342 WLAN_80211HDR_A4 sA4;
343
344 } UWLAN_80211HDR, *PUWLAN_80211HDR;
345
346
347 /*--------------------- Export Classes ----------------------------*/
348
349 /*--------------------- Export Variables --------------------------*/
350
351 /*--------------------- Export Functions --------------------------*/
352
353
354
355 #endif // __80211HDR_H__
356
357
358
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