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80211hdr.h
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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 #include "ttype.h"
32 
33 /*--------------------- Export Definitions -------------------------*/
34 
35 /* bit type */
36 #define BIT0 0x00000001
37 #define BIT1 0x00000002
38 #define BIT2 0x00000004
39 #define BIT3 0x00000008
40 #define BIT4 0x00000010
41 #define BIT5 0x00000020
42 #define BIT6 0x00000040
43 #define BIT7 0x00000080
44 #define BIT8 0x00000100
45 #define BIT9 0x00000200
46 #define BIT10 0x00000400
47 #define BIT11 0x00000800
48 #define BIT12 0x00001000
49 #define BIT13 0x00002000
50 #define BIT14 0x00004000
51 #define BIT15 0x00008000
52 #define BIT16 0x00010000
53 #define BIT17 0x00020000
54 #define BIT18 0x00040000
55 #define BIT19 0x00080000
56 #define BIT20 0x00100000
57 #define BIT21 0x00200000
58 #define BIT22 0x00400000
59 #define BIT23 0x00800000
60 #define BIT24 0x01000000
61 #define BIT25 0x02000000
62 #define BIT26 0x04000000
63 #define BIT27 0x08000000
64 #define BIT28 0x10000000
65 #define BIT29 0x20000000
66 #define BIT30 0x40000000
67 #define BIT31 0x80000000
68 
69 /* 802.11 frame related, defined as 802.11 spec */
70 #define WLAN_ADDR_LEN 6
71 #define WLAN_CRC_LEN 4
72 #define WLAN_CRC32_LEN 4
73 #define WLAN_FCS_LEN 4
74 #define WLAN_BSSID_LEN 6
75 #define WLAN_BSS_TS_LEN 8
76 #define WLAN_HDR_ADDR2_LEN 16
77 #define WLAN_HDR_ADDR3_LEN 24
78 #define WLAN_HDR_ADDR4_LEN 30
79 #define WLAN_IEHDR_LEN 2
80 #define WLAN_SSID_MAXLEN 32
81 #define WLAN_RATES_MAXLEN 16
82 #define WLAN_RATES_MAXLEN_11B 4
83 #define WLAN_RSN_MAXLEN 32
84 #define WLAN_DATA_MAXLEN 2312
85 #define WLAN_A3FR_MAXLEN (WLAN_HDR_ADDR3_LEN \
86  + 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) ((((WORD)(n) >> 8) & (BIT0 | BIT1))
159 #define WLAN_GET_FC_FTYPE(n) ((((WORD)(n) >> 8) & (BIT2 | BIT3)) >> 2)
160 #define WLAN_GET_FC_FSTYPE(n) ((((WORD)(n) >> 8) \
161  & (BIT4|BIT5|BIT6|BIT7)) >> 4)
162 #define WLAN_GET_FC_TODS(n) ((((WORD)(n) << 8) & (BIT8)) >> 8)
163 #define WLAN_GET_FC_FROMDS(n) ((((WORD)(n) << 8) & (BIT9)) >> 9)
164 #define WLAN_GET_FC_MOREFRAG(n) ((((WORD)(n) << 8) & (BIT10)) >> 10)
165 #define WLAN_GET_FC_RETRY(n) ((((WORD)(n) << 8) & (BIT11)) >> 11)
166 #define WLAN_GET_FC_PWRMGT(n) ((((WORD)(n) << 8) & (BIT12)) >> 12)
167 #define WLAN_GET_FC_MOREDATA(n) ((((WORD)(n) << 8) & (BIT13)) >> 13)
168 #define WLAN_GET_FC_ISWEP(n) ((((WORD)(n) << 8) & (BIT14)) >> 14)
169 #define WLAN_GET_FC_ORDER(n) ((((WORD)(n) << 8) & (BIT15)) >> 15)
170 
171 /* Sequence Field bit */
172 #define WLAN_GET_SEQ_FRGNUM(n) (((WORD)(n) >> 8) & (BIT0|BIT1|BIT2|BIT3))
173 #define WLAN_GET_SEQ_SEQNUM(n) ((((WORD)(n) >> 8) \
174  & (~(BIT0|BIT1|BIT2|BIT3))) >> 4)
175 
176 /* Capability Field bit */
177 #define WLAN_GET_CAP_INFO_ESS(n) (((n) >> 8) & BIT0)
178 #define WLAN_GET_CAP_INFO_IBSS(n) ((((n) >> 8) & BIT1) >> 1)
179 #define WLAN_GET_CAP_INFO_CFPOLLABLE(n) ((((n) >> 8) & BIT2) >> 2)
180 #define WLAN_GET_CAP_INFO_CFPOLLREQ(n) ((((n) >> 8) & BIT3) >> 3)
181 #define WLAN_GET_CAP_INFO_PRIVACY(n) ((((n) >> 8) & BIT4) >> 4)
182 #define WLAN_GET_CAP_INFO_SHORTPREAMBLE(n) ((((n) >> 8) & BIT5) >> 5)
183 #define WLAN_GET_CAP_INFO_PBCC(n) ((((n) >> 8) & BIT6) >> 6)
184 #define WLAN_GET_CAP_INFO_AGILITY(n) ((((n) >> 8) & BIT7) >> 7)
185 #define WLAN_GET_CAP_INFO_SPECTRUMMNG(n) ((((n)) & BIT8) >> 10)
186 #define WLAN_GET_CAP_INFO_SHORTSLOTTIME(n) ((((n)) & BIT10) >> 10)
187 #define WLAN_GET_CAP_INFO_DSSSOFDM(n) ((((n)) & BIT13) >> 13)
188 #define WLAN_GET_CAP_INFO_GRPACK(n) ((((n)) & BIT14) >> 14)
189 
190 #else
191 
192 /* GET & SET Frame Control bit */
193 #define WLAN_GET_FC_PRVER(n) (((WORD)(n)) & (BIT0 | BIT1))
194 #define WLAN_GET_FC_FTYPE(n) ((((WORD)(n)) & (BIT2 | BIT3)) >> 2)
195 #define WLAN_GET_FC_FSTYPE(n) ((((WORD)(n)) & (BIT4|BIT5|BIT6|BIT7)) >> 4)
196 #define WLAN_GET_FC_TODS(n) ((((WORD)(n)) & (BIT8)) >> 8)
197 #define WLAN_GET_FC_FROMDS(n) ((((WORD)(n)) & (BIT9)) >> 9)
198 #define WLAN_GET_FC_MOREFRAG(n) ((((WORD)(n)) & (BIT10)) >> 10)
199 #define WLAN_GET_FC_RETRY(n) ((((WORD)(n)) & (BIT11)) >> 11)
200 #define WLAN_GET_FC_PWRMGT(n) ((((WORD)(n)) & (BIT12)) >> 12)
201 #define WLAN_GET_FC_MOREDATA(n) ((((WORD)(n)) & (BIT13)) >> 13)
202 #define WLAN_GET_FC_ISWEP(n) ((((WORD)(n)) & (BIT14)) >> 14)
203 #define WLAN_GET_FC_ORDER(n) ((((WORD)(n)) & (BIT15)) >> 15)
204 
205 /* Sequence Field bit */
206 #define WLAN_GET_SEQ_FRGNUM(n) (((WORD)(n)) & (BIT0|BIT1|BIT2|BIT3))
207 #define WLAN_GET_SEQ_SEQNUM(n) ((((WORD)(n)) & (~(BIT0|BIT1|BIT2|BIT3))) >> 4)
208 
209 /* Capability Field bit */
210 #define WLAN_GET_CAP_INFO_ESS(n) ((n) & BIT0)
211 #define WLAN_GET_CAP_INFO_IBSS(n) (((n) & BIT1) >> 1)
212 #define WLAN_GET_CAP_INFO_CFPOLLABLE(n) (((n) & BIT2) >> 2)
213 #define WLAN_GET_CAP_INFO_CFPOLLREQ(n) (((n) & BIT3) >> 3)
214 #define WLAN_GET_CAP_INFO_PRIVACY(n) (((n) & BIT4) >> 4)
215 #define WLAN_GET_CAP_INFO_SHORTPREAMBLE(n) (((n) & BIT5) >> 5)
216 #define WLAN_GET_CAP_INFO_PBCC(n) (((n) & BIT6) >> 6)
217 #define WLAN_GET_CAP_INFO_AGILITY(n) (((n) & BIT7) >> 7)
218 #define WLAN_GET_CAP_INFO_SPECTRUMMNG(n) (((n) & BIT8) >> 10)
219 #define WLAN_GET_CAP_INFO_SHORTSLOTTIME(n) (((n) & BIT10) >> 10)
220 #define WLAN_GET_CAP_INFO_DSSSOFDM(n) (((n) & BIT13) >> 13)
221 #define WLAN_GET_CAP_INFO_GRPACK(n) (((n) & BIT14) >> 14)
222 
223 #endif /* #ifdef __BIG_ENDIAN */
224 
225 #define WLAN_SET_CAP_INFO_ESS(n) (n)
226 #define WLAN_SET_CAP_INFO_IBSS(n) ((n) << 1)
227 #define WLAN_SET_CAP_INFO_CFPOLLABLE(n) ((n) << 2)
228 #define WLAN_SET_CAP_INFO_CFPOLLREQ(n) ((n) << 3)
229 #define WLAN_SET_CAP_INFO_PRIVACY(n) ((n) << 4)
230 #define WLAN_SET_CAP_INFO_SHORTPREAMBLE(n) ((n) << 5)
231 #define WLAN_SET_CAP_INFO_SPECTRUMMNG(n) ((n) << 8)
232 #define WLAN_SET_CAP_INFO_PBCC(n) ((n) << 6)
233 #define WLAN_SET_CAP_INFO_AGILITY(n) ((n) << 7)
234 #define WLAN_SET_CAP_INFO_SHORTSLOTTIME(n) ((n) << 10)
235 #define WLAN_SET_CAP_INFO_DSSSOFDM(n) ((n) << 13)
236 #define WLAN_SET_CAP_INFO_GRPACK(n) ((n) << 14)
237 
238 #define WLAN_SET_FC_PRVER(n) ((WORD)(n))
239 #define WLAN_SET_FC_FTYPE(n) (((WORD)(n)) << 2)
240 #define WLAN_SET_FC_FSTYPE(n) (((WORD)(n)) << 4)
241 #define WLAN_SET_FC_TODS(n) (((WORD)(n)) << 8)
242 #define WLAN_SET_FC_FROMDS(n) (((WORD)(n)) << 9)
243 #define WLAN_SET_FC_MOREFRAG(n) (((WORD)(n)) << 10)
244 #define WLAN_SET_FC_RETRY(n) (((WORD)(n)) << 11)
245 #define WLAN_SET_FC_PWRMGT(n) (((WORD)(n)) << 12)
246 #define WLAN_SET_FC_MOREDATA(n) (((WORD)(n)) << 13)
247 #define WLAN_SET_FC_ISWEP(n) (((WORD)(n)) << 14)
248 #define WLAN_SET_FC_ORDER(n) (((WORD)(n)) << 15)
249 
250 #define WLAN_SET_SEQ_FRGNUM(n) ((WORD)(n))
251 #define WLAN_SET_SEQ_SEQNUM(n) (((WORD)(n)) << 4)
252 
253 /* ERP Field bit */
254 
255 #define WLAN_GET_ERP_NONERP_PRESENT(n) ((n) & BIT0)
256 #define WLAN_GET_ERP_USE_PROTECTION(n) (((n) & BIT1) >> 1)
257 #define WLAN_GET_ERP_BARKER_MODE(n) (((n) & BIT2) >> 2)
258 
259 #define WLAN_SET_ERP_NONERP_PRESENT(n) (n)
260 #define WLAN_SET_ERP_USE_PROTECTION(n) ((n) << 1)
261 #define WLAN_SET_ERP_BARKER_MODE(n) ((n) << 2)
262 
263 /* Support & Basic Rates field */
264 #define WLAN_MGMT_IS_BASICRATE(b) ((b) & BIT7)
265 #define WLAN_MGMT_GET_RATE(b) ((b) & ~BIT7)
266 
267 /* TIM field */
268 #define WLAN_MGMT_IS_MULTICAST_TIM(b) ((b) & BIT0)
269 #define WLAN_MGMT_GET_TIM_OFFSET(b) (((b) & ~BIT0) >> 1)
270 
271 /* 3-Addr & 4-Addr */
272 #define WLAN_HDR_A3_DATA_PTR(p) (((PBYTE)(p)) + WLAN_HDR_ADDR3_LEN)
273 #define WLAN_HDR_A4_DATA_PTR(p) (((PBYTE)(p)) + WLAN_HDR_ADDR4_LEN)
274 
275 /* IEEE ADDR */
276 #define IEEE_ADDR_UNIVERSAL 0x02
277 #define IEEE_ADDR_GROUP 0x01
278 
279 typedef struct {
280  BYTE abyAddr[6];
282 
283 /* 802.11 Header Format */
284 
285 typedef struct tagWLAN_80211HDR_A2 {
286 
291 
292 } __attribute__ ((__packed__))
293 WLAN_80211HDR_A2, *PWLAN_80211HDR_A2;
294 
303 
304 } __attribute__ ((__packed__))
305 WLAN_80211HDR_A3, *PWLAN_80211HDR_A3;
306 
307 typedef struct tagWLAN_80211HDR_A4 {
308 
316 
317 } __attribute__ ((__packed__))
318 WLAN_80211HDR_A4, *PWLAN_80211HDR_A4;
319 
320 typedef union tagUWLAN_80211HDR {
321 
322  WLAN_80211HDR_A2 sA2;
323  WLAN_80211HDR_A3 sA3;
324  WLAN_80211HDR_A4 sA4;
325 
327 
328 /*--------------------- Export Classes ----------------------------*/
329 
330 /*--------------------- Export Variables --------------------------*/
331 
332 /*--------------------- Export Functions --------------------------*/
333 
334 #endif /* __80211HDR_H__ */