Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / ieee802_11.h
CommitLineData
66170f0a 1/* @(#) $Header: /tcpdump/master/tcpdump/ieee802_11.h,v 1.9.4.3 2007/07/22 20:01:16 guy Exp $ (LBL) */
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2/*
3 * Copyright (c) 2001
4 * Fortress Technologies
5 * Charlie Lenahan ( clenahan@fortresstech.com )
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that: (1) source code distributions
9 * retain the above copyright notice and this paragraph in its entirety, (2)
10 * distributions including binary code include the above copyright notice and
11 * this paragraph in its entirety in the documentation or other materials
12 * provided with the distribution, and (3) all advertising materials mentioning
13 * features or use of this software display the following acknowledgement:
14 * ``This product includes software developed by the University of California,
15 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
16 * the University nor the names of its contributors may be used to endorse
17 * or promote products derived from this software without specific prior
18 * written permission.
19 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
20 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
21 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
22 */
23
24/* Lengths of 802.11 header components. */
25#define IEEE802_11_FC_LEN 2
26#define IEEE802_11_DUR_LEN 2
27#define IEEE802_11_DA_LEN 6
28#define IEEE802_11_SA_LEN 6
29#define IEEE802_11_BSSID_LEN 6
30#define IEEE802_11_RA_LEN 6
31#define IEEE802_11_TA_LEN 6
32#define IEEE802_11_SEQ_LEN 2
33#define IEEE802_11_IV_LEN 3
34#define IEEE802_11_KID_LEN 1
35
36/* Frame check sequence length. */
37#define IEEE802_11_FCS_LEN 4
38
39/* Lengths of beacon components. */
40#define IEEE802_11_TSTAMP_LEN 8
41#define IEEE802_11_BCNINT_LEN 2
42#define IEEE802_11_CAPINFO_LEN 2
43#define IEEE802_11_LISTENINT_LEN 2
44
45#define IEEE802_11_AID_LEN 2
46#define IEEE802_11_STATUS_LEN 2
47#define IEEE802_11_REASON_LEN 2
48
49/* Length of previous AP in reassocation frame */
50#define IEEE802_11_AP_LEN 6
51
52#define T_MGMT 0x0 /* management */
53#define T_CTRL 0x1 /* control */
54#define T_DATA 0x2 /* data */
55#define T_RESV 0x3 /* reserved */
56
57#define ST_ASSOC_REQUEST 0x0
58#define ST_ASSOC_RESPONSE 0x1
59#define ST_REASSOC_REQUEST 0x2
60#define ST_REASSOC_RESPONSE 0x3
61#define ST_PROBE_REQUEST 0x4
62#define ST_PROBE_RESPONSE 0x5
63/* RESERVED 0x6 */
64/* RESERVED 0x7 */
65#define ST_BEACON 0x8
66#define ST_ATIM 0x9
67#define ST_DISASSOC 0xA
68#define ST_AUTH 0xB
69#define ST_DEAUTH 0xC
70/* RESERVED 0xD */
71/* RESERVED 0xE */
72/* RESERVED 0xF */
73
74
75#define CTRL_PS_POLL 0xA
76#define CTRL_RTS 0xB
77#define CTRL_CTS 0xC
78#define CTRL_ACK 0xD
79#define CTRL_CF_END 0xE
80#define CTRL_END_ACK 0xF
81
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82#define DATA_DATA 0x0
83#define DATA_DATA_CF_ACK 0x1
84#define DATA_DATA_CF_POLL 0x2
85#define DATA_DATA_CF_ACK_POLL 0x3
86#define DATA_NODATA 0x4
87#define DATA_NODATA_CF_ACK 0x5
88#define DATA_NODATA_CF_POLL 0x6
89#define DATA_NODATA_CF_ACK_POLL 0x7
90
91#define DATA_QOS_DATA 0x8
92#define DATA_QOS_DATA_CF_ACK 0x9
93#define DATA_QOS_DATA_CF_POLL 0xA
94#define DATA_QOS_DATA_CF_ACK_POLL 0xB
95#define DATA_QOS_NODATA 0xC
96#define DATA_QOS_CF_POLL_NODATA 0xE
97#define DATA_QOS_CF_ACK_POLL_NODATA 0xF
98
99/*
100 * The subtype field of a data frame is, in effect, composed of 4 flag
101 * bits - CF-Ack, CF-Poll, Null (means the frame doesn't actually have
102 * any data), and QoS.
103 */
104#define DATA_FRAME_IS_CF_ACK(x) ((x) & 0x01)
105#define DATA_FRAME_IS_CF_POLL(x) ((x) & 0x02)
106#define DATA_FRAME_IS_NULL(x) ((x) & 0x04)
107#define DATA_FRAME_IS_QOS(x) ((x) & 0x08)
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108
109/*
110 * Bits in the frame control field.
111 */
112#define FC_VERSION(fc) ((fc) & 0x3)
113#define FC_TYPE(fc) (((fc) >> 2) & 0x3)
114#define FC_SUBTYPE(fc) (((fc) >> 4) & 0xF)
115#define FC_TO_DS(fc) ((fc) & 0x0100)
116#define FC_FROM_DS(fc) ((fc) & 0x0200)
117#define FC_MORE_FLAG(fc) ((fc) & 0x0400)
118#define FC_RETRY(fc) ((fc) & 0x0800)
119#define FC_POWER_MGMT(fc) ((fc) & 0x1000)
120#define FC_MORE_DATA(fc) ((fc) & 0x2000)
121#define FC_WEP(fc) ((fc) & 0x4000)
122#define FC_ORDER(fc) ((fc) & 0x8000)
123
124struct mgmt_header_t {
125 u_int16_t fc;
126 u_int16_t duration;
127 u_int8_t da[6];
128 u_int8_t sa[6];
129 u_int8_t bssid[6];
130 u_int16_t seq_ctrl;
131};
132
133#define MGMT_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
134 IEEE802_11_DA_LEN+IEEE802_11_SA_LEN+\
135 IEEE802_11_BSSID_LEN+IEEE802_11_SEQ_LEN)
136
137#define CAPABILITY_ESS(cap) ((cap) & 0x0001)
138#define CAPABILITY_IBSS(cap) ((cap) & 0x0002)
139#define CAPABILITY_CFP(cap) ((cap) & 0x0004)
140#define CAPABILITY_CFP_REQ(cap) ((cap) & 0x0008)
141#define CAPABILITY_PRIVACY(cap) ((cap) & 0x0010)
142
143typedef enum {
144 NOT_PRESENT,
145 PRESENT,
146 TRUNCATED
147} elem_status_t;
148
149struct ssid_t {
150 u_int8_t element_id;
151 u_int8_t length;
152 u_char ssid[33]; /* 32 + 1 for null */
153};
154
155struct rates_t {
156 u_int8_t element_id;
157 u_int8_t length;
158 u_int8_t rate[16];
159};
160
161struct challenge_t {
162 u_int8_t element_id;
163 u_int8_t length;
164 u_int8_t text[254]; /* 1-253 + 1 for null */
165};
166
167struct fh_t {
168 u_int8_t element_id;
169 u_int8_t length;
170 u_int16_t dwell_time;
171 u_int8_t hop_set;
172 u_int8_t hop_pattern;
173 u_int8_t hop_index;
174};
175
176struct ds_t {
177 u_int8_t element_id;
178 u_int8_t length;
179 u_int8_t channel;
180};
181
182struct cf_t {
183 u_int8_t element_id;
184 u_int8_t length;
185 u_int8_t count;
186 u_int8_t period;
187 u_int16_t max_duration;
188 u_int16_t dur_remaing;
189};
190
191struct tim_t {
192 u_int8_t element_id;
193 u_int8_t length;
194 u_int8_t count;
195 u_int8_t period;
196 u_int8_t bitmap_control;
197 u_int8_t bitmap[251];
198};
199
200#define E_SSID 0
201#define E_RATES 1
202#define E_FH 2
203#define E_DS 3
204#define E_CF 4
205#define E_TIM 5
206#define E_IBSS 6
207/* reserved 7 */
208/* reserved 8 */
209/* reserved 9 */
210/* reserved 10 */
211/* reserved 11 */
212/* reserved 12 */
213/* reserved 13 */
214/* reserved 14 */
215/* reserved 15 */
216/* reserved 16 */
217
218#define E_CHALLENGE 16
219/* reserved 17 */
220/* reserved 18 */
221/* reserved 19 */
222/* reserved 16 */
223/* reserved 16 */
224
225
226struct mgmt_body_t {
227 u_int8_t timestamp[IEEE802_11_TSTAMP_LEN];
228 u_int16_t beacon_interval;
229 u_int16_t listen_interval;
230 u_int16_t status_code;
231 u_int16_t aid;
232 u_char ap[IEEE802_11_AP_LEN];
233 u_int16_t reason_code;
234 u_int16_t auth_alg;
235 u_int16_t auth_trans_seq_num;
236 elem_status_t challenge_status;
237 struct challenge_t challenge;
238 u_int16_t capability_info;
239 elem_status_t ssid_status;
240 struct ssid_t ssid;
241 elem_status_t rates_status;
242 struct rates_t rates;
243 elem_status_t ds_status;
244 struct ds_t ds;
245 elem_status_t cf_status;
246 struct cf_t cf;
247 elem_status_t fh_status;
248 struct fh_t fh;
249 elem_status_t tim_status;
250 struct tim_t tim;
251};
252
253struct ctrl_rts_t {
254 u_int16_t fc;
255 u_int16_t duration;
256 u_int8_t ra[6];
257 u_int8_t ta[6];
258 u_int8_t fcs[4];
259};
260
261#define CTRL_RTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
262 IEEE802_11_RA_LEN+IEEE802_11_TA_LEN)
263
264struct ctrl_cts_t {
265 u_int16_t fc;
266 u_int16_t duration;
267 u_int8_t ra[6];
268 u_int8_t fcs[4];
269};
270
271#define CTRL_CTS_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
272
273struct ctrl_ack_t {
274 u_int16_t fc;
275 u_int16_t duration;
276 u_int8_t ra[6];
277 u_int8_t fcs[4];
278};
279
280#define CTRL_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+IEEE802_11_RA_LEN)
281
282struct ctrl_ps_poll_t {
283 u_int16_t fc;
284 u_int16_t aid;
285 u_int8_t bssid[6];
286 u_int8_t ta[6];
287 u_int8_t fcs[4];
288};
289
290#define CTRL_PS_POLL_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_AID_LEN+\
291 IEEE802_11_BSSID_LEN+IEEE802_11_TA_LEN)
292
293struct ctrl_end_t {
294 u_int16_t fc;
295 u_int16_t duration;
296 u_int8_t ra[6];
297 u_int8_t bssid[6];
298 u_int8_t fcs[4];
299};
300
301#define CTRL_END_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
302 IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
303
304struct ctrl_end_ack_t {
305 u_int16_t fc;
306 u_int16_t duration;
307 u_int8_t ra[6];
308 u_int8_t bssid[6];
309 u_int8_t fcs[4];
310};
311
312#define CTRL_END_ACK_HDRLEN (IEEE802_11_FC_LEN+IEEE802_11_DUR_LEN+\
313 IEEE802_11_RA_LEN+IEEE802_11_BSSID_LEN)
314
315#define IV_IV(iv) ((iv) & 0xFFFFFF)
316#define IV_PAD(iv) (((iv) >> 24) & 0x3F)
317#define IV_KEYID(iv) (((iv) >> 30) & 0x03)