_ieee80211.h revision 172056 
1/*-
2 * Copyright (c) 2001 Atsushi Onoe
3 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/net80211/_ieee80211.h 172056 2007-09-05 20:37:39Z sam $
27 */
28#ifndef _NET80211__IEEE80211_H_
29#define _NET80211__IEEE80211_H_
30
31enum ieee80211_phytype {
32	IEEE80211_T_DS,			/* direct sequence spread spectrum */
33	IEEE80211_T_FH,			/* frequency hopping */
34	IEEE80211_T_OFDM,		/* frequency division multiplexing */
35	IEEE80211_T_TURBO,		/* high rate OFDM, aka turbo mode */
36	IEEE80211_T_HT,			/* high throughput, full GI */
37};
38#define	IEEE80211_T_CCK	IEEE80211_T_DS	/* more common nomenclature */
39
40/* XXX not really a mode; there are really multiple PHY's */
41enum ieee80211_phymode {
42	IEEE80211_MODE_AUTO	= 0,	/* autoselect */
43	IEEE80211_MODE_11A	= 1,	/* 5GHz, OFDM */
44	IEEE80211_MODE_11B	= 2,	/* 2GHz, CCK */
45	IEEE80211_MODE_11G	= 3,	/* 2GHz, OFDM */
46	IEEE80211_MODE_FH	= 4,	/* 2GHz, GFSK */
47	IEEE80211_MODE_TURBO_A	= 5,	/* 5GHz, OFDM, 2x clock */
48	IEEE80211_MODE_TURBO_G	= 6,	/* 2GHz, OFDM, 2x clock */
49	IEEE80211_MODE_STURBO_A	= 7,	/* 5GHz, OFDM, 2x clock, static */
50	IEEE80211_MODE_11NA	= 8,	/* 5GHz, w/ HT */
51	IEEE80211_MODE_11NG	= 9,	/* 2GHz, w/ HT */
52};
53#define	IEEE80211_MODE_MAX	(IEEE80211_MODE_11NG+1)
54
55enum ieee80211_opmode {
56	IEEE80211_M_STA		= 1,	/* infrastructure station */
57	IEEE80211_M_IBSS 	= 0,	/* IBSS (adhoc) station */
58	IEEE80211_M_AHDEMO	= 3,	/* Old lucent compatible adhoc demo */
59	IEEE80211_M_HOSTAP	= 6,	/* Software Access Point */
60	IEEE80211_M_MONITOR	= 8,	/* Monitor mode */
61	IEEE80211_M_WDS		= 2	/* WDS link */
62};
63#define	IEEE80211_OPMODE_MAX	(IEEE80211_M_MONITOR+1)
64
65/*
66 * 802.11g/802.11n protection mode.
67 */
68enum ieee80211_protmode {
69	IEEE80211_PROT_NONE	= 0,	/* no protection */
70	IEEE80211_PROT_CTSONLY	= 1,	/* CTS to self */
71	IEEE80211_PROT_RTSCTS	= 2,	/* RTS-CTS */
72};
73
74/*
75 * Authentication mode.
76 */
77enum ieee80211_authmode {
78	IEEE80211_AUTH_NONE	= 0,
79	IEEE80211_AUTH_OPEN	= 1,		/* open */
80	IEEE80211_AUTH_SHARED	= 2,		/* shared-key */
81	IEEE80211_AUTH_8021X	= 3,		/* 802.1x */
82	IEEE80211_AUTH_AUTO	= 4,		/* auto-select/accept */
83	/* NB: these are used only for ioctls */
84	IEEE80211_AUTH_WPA	= 5,		/* WPA/RSN w/ 802.1x/PSK */
85};
86
87/*
88 * Roaming mode is effectively who controls the operation
89 * of the 802.11 state machine when operating as a station.
90 * State transitions are controlled either by the driver
91 * (typically when management frames are processed by the
92 * hardware/firmware), the host (auto/normal operation of
93 * the 802.11 layer), or explicitly through ioctl requests
94 * when applications like wpa_supplicant want control.
95 */
96enum ieee80211_roamingmode {
97	IEEE80211_ROAMING_DEVICE= 0,	/* driver/hardware control */
98	IEEE80211_ROAMING_AUTO	= 1,	/* 802.11 layer control */
99	IEEE80211_ROAMING_MANUAL= 2,	/* application control */
100};
101
102/*
103 * Channels are specified by frequency and attributes.
104 */
105struct ieee80211_channel {
106	uint32_t	ic_flags;	/* see below */
107	uint16_t	ic_freq;	/* setting in Mhz */
108	uint8_t		ic_ieee;	/* IEEE channel number */
109	int8_t		ic_maxregpower;	/* maximum regulatory tx power in dBm */
110	int8_t		ic_maxpower;	/* maximum tx power in .5 dBm */
111	int8_t		ic_minpower;	/* minimum tx power in .5 dBm */
112	uint8_t		ic_state;	/* dynamic state */
113	uint8_t		ic_extieee;	/* HT40 extension channel number */
114};
115
116#define	IEEE80211_CHAN_MAX	255
117#define	IEEE80211_CHAN_BYTES	32	/* howmany(IEEE80211_CHAN_MAX, NBBY) */
118#define	IEEE80211_CHAN_ANY	0xffff	/* token for ``any channel'' */
119#define	IEEE80211_CHAN_ANYC \
120	((struct ieee80211_channel *) IEEE80211_CHAN_ANY)
121
122/* bits 0-3 are for private use by drivers */
123/* channel attributes */
124#define	IEEE80211_CHAN_TURBO	0x00000010 /* Turbo channel */
125#define	IEEE80211_CHAN_CCK	0x00000020 /* CCK channel */
126#define	IEEE80211_CHAN_OFDM	0x00000040 /* OFDM channel */
127#define	IEEE80211_CHAN_2GHZ	0x00000080 /* 2 GHz spectrum channel. */
128#define	IEEE80211_CHAN_5GHZ	0x00000100 /* 5 GHz spectrum channel */
129#define	IEEE80211_CHAN_PASSIVE	0x00000200 /* Only passive scan allowed */
130#define	IEEE80211_CHAN_DYN	0x00000400 /* Dynamic CCK-OFDM channel */
131#define	IEEE80211_CHAN_GFSK	0x00000800 /* GFSK channel (FHSS PHY) */
132#define	IEEE80211_CHAN_GSM	0x00001000 /* 900 MHz spectrum channel */
133#define	IEEE80211_CHAN_STURBO	0x00002000 /* 11a static turbo channel only */
134#define	IEEE80211_CHAN_HALF	0x00004000 /* Half rate channel */
135#define	IEEE80211_CHAN_QUARTER	0x00008000 /* Quarter rate channel */
136#define	IEEE80211_CHAN_HT20	0x00010000 /* HT 20 channel */
137#define	IEEE80211_CHAN_HT40U	0x00020000 /* HT 40 channel w/ ext above */
138#define	IEEE80211_CHAN_HT40D	0x00040000 /* HT 40 channel w/ ext below */
139#define	IEEE80211_CHAN_DFS	0x00080000 /* DFS required */
140#define	IEEE80211_CHAN_4MSXMIT	0x00100000 /* 4ms limit on frame length */
141#define	IEEE80211_CHAN_NOADHOC	0x00200000 /* adhoc mode not allowed */
142#define	IEEE80211_CHAN_NOHOSTAP	0x00400000 /* hostap mode not allowed */
143#define	IEEE80211_CHAN_11D	0x00800000 /* 802.11d required */
144
145#define	IEEE80211_CHAN_HT40	(IEEE80211_CHAN_HT40U | IEEE80211_CHAN_HT40D)
146#define	IEEE80211_CHAN_HT	(IEEE80211_CHAN_HT20 | IEEE80211_CHAN_HT40)
147
148/*
149 * Useful combinations of channel characteristics.
150 */
151#define	IEEE80211_CHAN_FHSS \
152	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
153#define	IEEE80211_CHAN_A \
154	(IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
155#define	IEEE80211_CHAN_B \
156	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
157#define	IEEE80211_CHAN_PUREG \
158	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
159#define	IEEE80211_CHAN_G \
160	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
161#define IEEE80211_CHAN_108A \
162	(IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)
163#define	IEEE80211_CHAN_108G \
164	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_TURBO)
165#define	IEEE80211_CHAN_ST \
166	(IEEE80211_CHAN_108A | IEEE80211_CHAN_STURBO)
167
168#define	IEEE80211_CHAN_ALL \
169	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \
170	 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN | \
171	 IEEE80211_CHAN_HT)
172#define	IEEE80211_CHAN_ALLTURBO \
173	(IEEE80211_CHAN_ALL | IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)
174
175#define	IEEE80211_IS_CHAN_FHSS(_c) \
176	(((_c)->ic_flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
177#define	IEEE80211_IS_CHAN_A(_c) \
178	(((_c)->ic_flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
179#define	IEEE80211_IS_CHAN_B(_c) \
180	(((_c)->ic_flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
181#define	IEEE80211_IS_CHAN_PUREG(_c) \
182	(((_c)->ic_flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
183#define	IEEE80211_IS_CHAN_G(_c) \
184	(((_c)->ic_flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
185#define	IEEE80211_IS_CHAN_ANYG(_c) \
186	(IEEE80211_IS_CHAN_PUREG(_c) || IEEE80211_IS_CHAN_G(_c))
187#define	IEEE80211_IS_CHAN_ST(_c) \
188	(((_c)->ic_flags & IEEE80211_CHAN_ST) == IEEE80211_CHAN_ST)
189#define	IEEE80211_IS_CHAN_108A(_c) \
190	(((_c)->ic_flags & IEEE80211_CHAN_108A) == IEEE80211_CHAN_108A)
191#define	IEEE80211_IS_CHAN_108G(_c) \
192	(((_c)->ic_flags & IEEE80211_CHAN_108G) == IEEE80211_CHAN_108G)
193
194#define	IEEE80211_IS_CHAN_2GHZ(_c) \
195	(((_c)->ic_flags & IEEE80211_CHAN_2GHZ) != 0)
196#define	IEEE80211_IS_CHAN_5GHZ(_c) \
197	(((_c)->ic_flags & IEEE80211_CHAN_5GHZ) != 0)
198#define	IEEE80211_IS_CHAN_PASSIVE(_c) \
199	(((_c)->ic_flags & IEEE80211_CHAN_PASSIVE) != 0)
200#define	IEEE80211_IS_CHAN_OFDM(_c) \
201	(((_c)->ic_flags & IEEE80211_CHAN_OFDM) != 0)
202#define	IEEE80211_IS_CHAN_CCK(_c) \
203	(((_c)->ic_flags & IEEE80211_CHAN_CCK) != 0)
204#define	IEEE80211_IS_CHAN_GFSK(_c) \
205	(((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)
206#define	IEEE80211_IS_CHAN_TURBO(_c) \
207	(((_c)->ic_flags & IEEE80211_CHAN_TURBO) != 0)
208#define	IEEE80211_IS_CHAN_STURBO(_c) \
209	(((_c)->ic_flags & IEEE80211_CHAN_STURBO) != 0)
210#define	IEEE80211_IS_CHAN_DTURBO(_c) \
211	(((_c)->ic_flags & \
212	(IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)) == IEEE80211_CHAN_TURBO)
213#define	IEEE80211_IS_CHAN_HALF(_c) \
214	(((_c)->ic_flags & IEEE80211_CHAN_HALF) != 0)
215#define	IEEE80211_IS_CHAN_QUARTER(_c) \
216	(((_c)->ic_flags & IEEE80211_CHAN_QUARTER) != 0)
217#define	IEEE80211_IS_CHAN_FULL(_c) \
218	(((_c)->ic_flags & (IEEE80211_CHAN_QUARTER | IEEE80211_CHAN_HALF)) == 0)
219#define	IEEE80211_IS_CHAN_GSM(_c) \
220	(((_c)->ic_flags & IEEE80211_CHAN_GSM) != 0)
221#define	IEEE80211_IS_CHAN_HT(_c) \
222	(((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
223#define	IEEE80211_IS_CHAN_HT20(_c) \
224	(((_c)->ic_flags & IEEE80211_CHAN_HT20) != 0)
225#define	IEEE80211_IS_CHAN_HT40(_c) \
226	(((_c)->ic_flags & IEEE80211_CHAN_HT40) != 0)
227#define	IEEE80211_IS_CHAN_HT40U(_c) \
228	(((_c)->ic_flags & IEEE80211_CHAN_HT40U) != 0)
229#define	IEEE80211_IS_CHAN_HT40D(_c) \
230	(((_c)->ic_flags & IEEE80211_CHAN_HT40D) != 0)
231#define	IEEE80211_IS_CHAN_HTA(_c) \
232	(IEEE80211_IS_CHAN_5GHZ(_c) && \
233	 ((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
234#define	IEEE80211_IS_CHAN_HTG(_c) \
235	(IEEE80211_IS_CHAN_2GHZ(_c) && \
236	 ((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
237#define	IEEE80211_IS_CHAN_DFS(_c) \
238	(((_c)->ic_flags & IEEE80211_CHAN_DFS) != 0)
239#define	IEEE80211_IS_CHAN_NOADHOC(_c) \
240	(((_c)->ic_flags & IEEE80211_CHAN_NOADHOC) != 0)
241#define	IEEE80211_IS_CHAN_NOHOSTAP(_c) \
242	(((_c)->ic_flags & IEEE80211_CHAN_NOHOSTAP) != 0)
243#define	IEEE80211_IS_CHAN_11D(_c) \
244	(((_c)->ic_flags & IEEE80211_CHAN_11D) != 0)
245
246#define	IEEE80211_CHAN2IEEE(_c)		(_c)->ic_ieee
247
248/* dynamic state */
249#define	IEEE80211_CHANSTATE_RADAR	0x01	/* radar detected */
250#define	IEEE80211_CHANSTATE_CACDONE	0x02	/* CAC completed */
251#define	IEEE80211_CHANSTATE_NORADAR	0x10	/* post notify on radar clear */
252
253#define	IEEE80211_IS_CHAN_RADAR(_c) \
254	(((_c)->ic_state & IEEE80211_CHANSTATE_RADAR) != 0)
255#define	IEEE80211_IS_CHAN_CACDONE(_c) \
256	(((_c)->ic_state & IEEE80211_CHANSTATE_CACDONE) != 0)
257
258/* ni_chan encoding for FH phy */
259#define	IEEE80211_FH_CHANMOD	80
260#define	IEEE80211_FH_CHAN(set,pat)	(((set)-1)*IEEE80211_FH_CHANMOD+(pat))
261#define	IEEE80211_FH_CHANSET(chan)	((chan)/IEEE80211_FH_CHANMOD+1)
262#define	IEEE80211_FH_CHANPAT(chan)	((chan)%IEEE80211_FH_CHANMOD)
263
264/*
265 * 802.11 rate set.
266 */
267#define	IEEE80211_RATE_SIZE	8		/* 802.11 standard */
268#define	IEEE80211_RATE_MAXSIZE	15		/* max rates we'll handle */
269
270struct ieee80211_rateset {
271	uint8_t			rs_nrates;
272	uint8_t			rs_rates[IEEE80211_RATE_MAXSIZE];
273};
274
275/*
276 * 802.11n variant of ieee80211_rateset.  Instead
277 * legacy rates the entries are MCS rates.  We define
278 * the structure such that it can be used interchangeably
279 * with an ieee80211_rateset (modulo structure size).
280 */
281#define	IEEE80211_HTRATE_MAXSIZE 127
282
283struct ieee80211_htrateset {
284	uint8_t			rs_nrates;
285	uint8_t			rs_rates[IEEE80211_HTRATE_MAXSIZE];
286};
287
288/*
289 * Roaming state visible to user space.  There are two
290 * thresholds that control whether roaming is considered;
291 * when either is exceeded the 802.11 layer will check
292 * the scan cache for another AP.  If the cache is stale
293 * then a scan may be triggered.
294 */
295struct ieee80211_roam {
296	int8_t			rssi11a;	/* rssi thresh for 11a bss */
297	int8_t			rssi11b;	/* for 11g sta in 11b bss */
298	int8_t			rssi11bOnly;	/* for 11b sta */
299	uint8_t			pad1;
300	uint8_t			rate11a;	/* rate thresh for 11a bss */
301	uint8_t			rate11b;	/* for 11g sta in 11b bss */
302	uint8_t			rate11bOnly;	/* for 11b sta */
303	uint8_t			pad2;
304};
305#endif /* _NET80211__IEEE80211_H_ */
306