xref: /freebsd/sys/net80211/_ieee80211.h (revision b1b73fc4c9924c4ca2f94b76155a0895373a0b5c)
1 /*-
2  * Copyright (c) 2001 Atsushi Onoe
3  * Copyright (c) 2002-2008 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  * $FreeBSD$
27  */
28 #ifndef _NET80211__IEEE80211_H_
29 #define _NET80211__IEEE80211_H_
30 
31 /*
32  * 802.11 implementation definitions.
33  *
34  * NB: this file is used by applications.
35  */
36 
37 /*
38  * PHY type; mostly used to identify FH phys.
39  */
40 enum ieee80211_phytype {
41 	IEEE80211_T_DS,			/* direct sequence spread spectrum */
42 	IEEE80211_T_FH,			/* frequency hopping */
43 	IEEE80211_T_OFDM,		/* frequency division multiplexing */
44 	IEEE80211_T_TURBO,		/* high rate OFDM, aka turbo mode */
45 	IEEE80211_T_HT,			/* high throughput */
46 	IEEE80211_T_OFDM_HALF,		/* 1/2 rate OFDM */
47 	IEEE80211_T_OFDM_QUARTER,	/* 1/4 rate OFDM */
48 };
49 #define	IEEE80211_T_CCK	IEEE80211_T_DS	/* more common nomenclature */
50 
51 /*
52  * PHY mode; this is not really a mode as multi-mode devices
53  * have multiple PHY's.  Mode is mostly used as a shorthand
54  * for constraining which channels to consider in setting up
55  * operation.  Modes used to be used more extensively when
56  * channels were identified as IEEE channel numbers.
57  */
58 enum ieee80211_phymode {
59 	IEEE80211_MODE_AUTO	= 0,	/* autoselect */
60 	IEEE80211_MODE_11A	= 1,	/* 5GHz, OFDM */
61 	IEEE80211_MODE_11B	= 2,	/* 2GHz, CCK */
62 	IEEE80211_MODE_11G	= 3,	/* 2GHz, OFDM */
63 	IEEE80211_MODE_FH	= 4,	/* 2GHz, GFSK */
64 	IEEE80211_MODE_TURBO_A	= 5,	/* 5GHz, OFDM, 2x clock */
65 	IEEE80211_MODE_TURBO_G	= 6,	/* 2GHz, OFDM, 2x clock */
66 	IEEE80211_MODE_STURBO_A	= 7,	/* 5GHz, OFDM, 2x clock, static */
67 	IEEE80211_MODE_11NA	= 8,	/* 5GHz, w/ HT */
68 	IEEE80211_MODE_11NG	= 9,	/* 2GHz, w/ HT */
69 	IEEE80211_MODE_HALF	= 10,	/* OFDM, 1/2x clock */
70 	IEEE80211_MODE_QUARTER	= 11,	/* OFDM, 1/4x clock */
71 };
72 #define	IEEE80211_MODE_MAX	(IEEE80211_MODE_QUARTER+1)
73 #define	IEEE80211_MODE_BYTES	howmany(IEEE80211_MODE_MAX, NBBY)
74 
75 /*
76  * Operating mode.  Devices do not necessarily support
77  * all modes; they indicate which are supported in their
78  * capabilities.
79  */
80 enum ieee80211_opmode {
81 	IEEE80211_M_IBSS 	= 0,	/* IBSS (adhoc) station */
82 	IEEE80211_M_STA		= 1,	/* infrastructure station */
83 	IEEE80211_M_WDS		= 2,	/* WDS link */
84 	IEEE80211_M_AHDEMO	= 3,	/* Old lucent compatible adhoc demo */
85 	IEEE80211_M_HOSTAP	= 4,	/* Software Access Point */
86 	IEEE80211_M_MONITOR	= 5,	/* Monitor mode */
87 	IEEE80211_M_MBSS	= 6,	/* MBSS (Mesh Point) link */
88 };
89 #define	IEEE80211_OPMODE_MAX	(IEEE80211_M_MBSS+1)
90 
91 /*
92  * 802.11g/802.11n protection mode.
93  */
94 enum ieee80211_protmode {
95 	IEEE80211_PROT_NONE	= 0,	/* no protection */
96 	IEEE80211_PROT_CTSONLY	= 1,	/* CTS to self */
97 	IEEE80211_PROT_RTSCTS	= 2,	/* RTS-CTS */
98 };
99 
100 /*
101  * Authentication mode.  The open and shared key authentication
102  * modes are implemented within the 802.11 layer.  802.1x and
103  * WPA/802.11i are implemented in user mode by setting the
104  * 802.11 layer into IEEE80211_AUTH_8021X and deferring
105  * authentication to user space programs.
106  */
107 enum ieee80211_authmode {
108 	IEEE80211_AUTH_NONE	= 0,
109 	IEEE80211_AUTH_OPEN	= 1,		/* open */
110 	IEEE80211_AUTH_SHARED	= 2,		/* shared-key */
111 	IEEE80211_AUTH_8021X	= 3,		/* 802.1x */
112 	IEEE80211_AUTH_AUTO	= 4,		/* auto-select/accept */
113 	/* NB: these are used only for ioctls */
114 	IEEE80211_AUTH_WPA	= 5,		/* WPA/RSN w/ 802.1x/PSK */
115 };
116 
117 /*
118  * Roaming mode is effectively who controls the operation
119  * of the 802.11 state machine when operating as a station.
120  * State transitions are controlled either by the driver
121  * (typically when management frames are processed by the
122  * hardware/firmware), the host (auto/normal operation of
123  * the 802.11 layer), or explicitly through ioctl requests
124  * when applications like wpa_supplicant want control.
125  */
126 enum ieee80211_roamingmode {
127 	IEEE80211_ROAMING_DEVICE= 0,	/* driver/hardware control */
128 	IEEE80211_ROAMING_AUTO	= 1,	/* 802.11 layer control */
129 	IEEE80211_ROAMING_MANUAL= 2,	/* application control */
130 };
131 
132 /*
133  * Channels are specified by frequency and attributes.
134  */
135 struct ieee80211_channel {
136 	uint32_t	ic_flags;	/* see below */
137 	uint16_t	ic_freq;	/* setting in MHz */
138 	uint8_t		ic_ieee;	/* IEEE channel number */
139 	int8_t		ic_maxregpower;	/* maximum regulatory tx power in dBm */
140 	int8_t		ic_maxpower;	/* maximum tx power in .5 dBm */
141 	int8_t		ic_minpower;	/* minimum tx power in .5 dBm */
142 	uint8_t		ic_state;	/* dynamic state */
143 	uint8_t		ic_extieee;	/* HT40 extension channel number */
144 	int8_t		ic_maxantgain;	/* maximum antenna gain in .5 dBm */
145 	uint8_t		ic_pad;
146 	uint16_t	ic_devdata;	/* opaque device/driver data */
147 };
148 
149 #define	IEEE80211_CHAN_MAX	256
150 #define	IEEE80211_CHAN_BYTES	howmany(IEEE80211_CHAN_MAX, NBBY)
151 #define	IEEE80211_CHAN_ANY	0xffff	/* token for ``any channel'' */
152 #define	IEEE80211_CHAN_ANYC \
153 	((struct ieee80211_channel *) IEEE80211_CHAN_ANY)
154 
155 /* channel attributes */
156 #define	IEEE80211_CHAN_PRIV0	0x00000001 /* driver private bit 0 */
157 #define	IEEE80211_CHAN_PRIV1	0x00000002 /* driver private bit 1 */
158 #define	IEEE80211_CHAN_PRIV2	0x00000004 /* driver private bit 2 */
159 #define	IEEE80211_CHAN_PRIV3	0x00000008 /* driver private bit 3 */
160 #define	IEEE80211_CHAN_TURBO	0x00000010 /* Turbo channel */
161 #define	IEEE80211_CHAN_CCK	0x00000020 /* CCK channel */
162 #define	IEEE80211_CHAN_OFDM	0x00000040 /* OFDM channel */
163 #define	IEEE80211_CHAN_2GHZ	0x00000080 /* 2 GHz spectrum channel. */
164 #define	IEEE80211_CHAN_5GHZ	0x00000100 /* 5 GHz spectrum channel */
165 #define	IEEE80211_CHAN_PASSIVE	0x00000200 /* Only passive scan allowed */
166 #define	IEEE80211_CHAN_DYN	0x00000400 /* Dynamic CCK-OFDM channel */
167 #define	IEEE80211_CHAN_GFSK	0x00000800 /* GFSK channel (FHSS PHY) */
168 #define	IEEE80211_CHAN_GSM	0x00001000 /* 900 MHz spectrum channel */
169 #define	IEEE80211_CHAN_STURBO	0x00002000 /* 11a static turbo channel only */
170 #define	IEEE80211_CHAN_HALF	0x00004000 /* Half rate channel */
171 #define	IEEE80211_CHAN_QUARTER	0x00008000 /* Quarter rate channel */
172 #define	IEEE80211_CHAN_HT20	0x00010000 /* HT 20 channel */
173 #define	IEEE80211_CHAN_HT40U	0x00020000 /* HT 40 channel w/ ext above */
174 #define	IEEE80211_CHAN_HT40D	0x00040000 /* HT 40 channel w/ ext below */
175 #define	IEEE80211_CHAN_DFS	0x00080000 /* DFS required */
176 #define	IEEE80211_CHAN_4MSXMIT	0x00100000 /* 4ms limit on frame length */
177 #define	IEEE80211_CHAN_NOADHOC	0x00200000 /* adhoc mode not allowed */
178 #define	IEEE80211_CHAN_NOHOSTAP	0x00400000 /* hostap mode not allowed */
179 #define	IEEE80211_CHAN_11D	0x00800000 /* 802.11d required */
180 
181 #define	IEEE80211_CHAN_HT40	(IEEE80211_CHAN_HT40U | IEEE80211_CHAN_HT40D)
182 #define	IEEE80211_CHAN_HT	(IEEE80211_CHAN_HT20 | IEEE80211_CHAN_HT40)
183 
184 #define	IEEE80211_CHAN_BITS \
185 	"\20\1PRIV0\2PRIV2\3PRIV3\4PRIV4\5TURBO\6CCK\7OFDM\0102GHZ\0115GHZ" \
186 	"\12PASSIVE\13DYN\14GFSK\15GSM\16STURBO\17HALF\20QUARTER\21HT20" \
187 	"\22HT40U\23HT40D\24DFS\0254MSXMIT\26NOADHOC\27NOHOSTAP\03011D"
188 
189 /*
190  * Useful combinations of channel characteristics.
191  */
192 #define	IEEE80211_CHAN_FHSS \
193 	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_GFSK)
194 #define	IEEE80211_CHAN_A \
195 	(IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_OFDM)
196 #define	IEEE80211_CHAN_B \
197 	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_CCK)
198 #define	IEEE80211_CHAN_PUREG \
199 	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_OFDM)
200 #define	IEEE80211_CHAN_G \
201 	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_DYN)
202 #define IEEE80211_CHAN_108A \
203 	(IEEE80211_CHAN_A | IEEE80211_CHAN_TURBO)
204 #define	IEEE80211_CHAN_108G \
205 	(IEEE80211_CHAN_PUREG | IEEE80211_CHAN_TURBO)
206 #define	IEEE80211_CHAN_ST \
207 	(IEEE80211_CHAN_108A | IEEE80211_CHAN_STURBO)
208 
209 #define	IEEE80211_CHAN_ALL \
210 	(IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_GFSK | \
211 	 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN | \
212 	 IEEE80211_CHAN_HALF | IEEE80211_CHAN_QUARTER | \
213 	 IEEE80211_CHAN_HT)
214 #define	IEEE80211_CHAN_ALLTURBO \
215 	(IEEE80211_CHAN_ALL | IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)
216 
217 #define	IEEE80211_IS_CHAN_FHSS(_c) \
218 	(((_c)->ic_flags & IEEE80211_CHAN_FHSS) == IEEE80211_CHAN_FHSS)
219 #define	IEEE80211_IS_CHAN_A(_c) \
220 	(((_c)->ic_flags & IEEE80211_CHAN_A) == IEEE80211_CHAN_A)
221 #define	IEEE80211_IS_CHAN_B(_c) \
222 	(((_c)->ic_flags & IEEE80211_CHAN_B) == IEEE80211_CHAN_B)
223 #define	IEEE80211_IS_CHAN_PUREG(_c) \
224 	(((_c)->ic_flags & IEEE80211_CHAN_PUREG) == IEEE80211_CHAN_PUREG)
225 #define	IEEE80211_IS_CHAN_G(_c) \
226 	(((_c)->ic_flags & IEEE80211_CHAN_G) == IEEE80211_CHAN_G)
227 #define	IEEE80211_IS_CHAN_ANYG(_c) \
228 	(IEEE80211_IS_CHAN_PUREG(_c) || IEEE80211_IS_CHAN_G(_c))
229 #define	IEEE80211_IS_CHAN_ST(_c) \
230 	(((_c)->ic_flags & IEEE80211_CHAN_ST) == IEEE80211_CHAN_ST)
231 #define	IEEE80211_IS_CHAN_108A(_c) \
232 	(((_c)->ic_flags & IEEE80211_CHAN_108A) == IEEE80211_CHAN_108A)
233 #define	IEEE80211_IS_CHAN_108G(_c) \
234 	(((_c)->ic_flags & IEEE80211_CHAN_108G) == IEEE80211_CHAN_108G)
235 
236 #define	IEEE80211_IS_CHAN_2GHZ(_c) \
237 	(((_c)->ic_flags & IEEE80211_CHAN_2GHZ) != 0)
238 #define	IEEE80211_IS_CHAN_5GHZ(_c) \
239 	(((_c)->ic_flags & IEEE80211_CHAN_5GHZ) != 0)
240 #define	IEEE80211_IS_CHAN_PASSIVE(_c) \
241 	(((_c)->ic_flags & IEEE80211_CHAN_PASSIVE) != 0)
242 #define	IEEE80211_IS_CHAN_OFDM(_c) \
243 	(((_c)->ic_flags & (IEEE80211_CHAN_OFDM | IEEE80211_CHAN_DYN)) != 0)
244 #define	IEEE80211_IS_CHAN_CCK(_c) \
245 	(((_c)->ic_flags & (IEEE80211_CHAN_CCK | IEEE80211_CHAN_DYN)) != 0)
246 #define	IEEE80211_IS_CHAN_DYN(_c) \
247 	(((_c)->ic_flags & IEEE80211_CHAN_DYN) == IEEE80211_CHAN_DYN)
248 #define	IEEE80211_IS_CHAN_GFSK(_c) \
249 	(((_c)->ic_flags & IEEE80211_CHAN_GFSK) != 0)
250 #define	IEEE80211_IS_CHAN_TURBO(_c) \
251 	(((_c)->ic_flags & IEEE80211_CHAN_TURBO) != 0)
252 #define	IEEE80211_IS_CHAN_STURBO(_c) \
253 	(((_c)->ic_flags & IEEE80211_CHAN_STURBO) != 0)
254 #define	IEEE80211_IS_CHAN_DTURBO(_c) \
255 	(((_c)->ic_flags & \
256 	(IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)) == IEEE80211_CHAN_TURBO)
257 #define	IEEE80211_IS_CHAN_HALF(_c) \
258 	(((_c)->ic_flags & IEEE80211_CHAN_HALF) != 0)
259 #define	IEEE80211_IS_CHAN_QUARTER(_c) \
260 	(((_c)->ic_flags & IEEE80211_CHAN_QUARTER) != 0)
261 #define	IEEE80211_IS_CHAN_FULL(_c) \
262 	(((_c)->ic_flags & (IEEE80211_CHAN_QUARTER | IEEE80211_CHAN_HALF)) == 0)
263 #define	IEEE80211_IS_CHAN_GSM(_c) \
264 	(((_c)->ic_flags & IEEE80211_CHAN_GSM) != 0)
265 #define	IEEE80211_IS_CHAN_HT(_c) \
266 	(((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
267 #define	IEEE80211_IS_CHAN_HT20(_c) \
268 	(((_c)->ic_flags & IEEE80211_CHAN_HT20) != 0)
269 #define	IEEE80211_IS_CHAN_HT40(_c) \
270 	(((_c)->ic_flags & IEEE80211_CHAN_HT40) != 0)
271 #define	IEEE80211_IS_CHAN_HT40U(_c) \
272 	(((_c)->ic_flags & IEEE80211_CHAN_HT40U) != 0)
273 #define	IEEE80211_IS_CHAN_HT40D(_c) \
274 	(((_c)->ic_flags & IEEE80211_CHAN_HT40D) != 0)
275 #define	IEEE80211_IS_CHAN_HTA(_c) \
276 	(IEEE80211_IS_CHAN_5GHZ(_c) && \
277 	 ((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
278 #define	IEEE80211_IS_CHAN_HTG(_c) \
279 	(IEEE80211_IS_CHAN_2GHZ(_c) && \
280 	 ((_c)->ic_flags & IEEE80211_CHAN_HT) != 0)
281 #define	IEEE80211_IS_CHAN_DFS(_c) \
282 	(((_c)->ic_flags & IEEE80211_CHAN_DFS) != 0)
283 #define	IEEE80211_IS_CHAN_NOADHOC(_c) \
284 	(((_c)->ic_flags & IEEE80211_CHAN_NOADHOC) != 0)
285 #define	IEEE80211_IS_CHAN_NOHOSTAP(_c) \
286 	(((_c)->ic_flags & IEEE80211_CHAN_NOHOSTAP) != 0)
287 #define	IEEE80211_IS_CHAN_11D(_c) \
288 	(((_c)->ic_flags & IEEE80211_CHAN_11D) != 0)
289 
290 #define	IEEE80211_CHAN2IEEE(_c)		(_c)->ic_ieee
291 
292 /* dynamic state */
293 #define	IEEE80211_CHANSTATE_RADAR	0x01	/* radar detected */
294 #define	IEEE80211_CHANSTATE_CACDONE	0x02	/* CAC completed */
295 #define	IEEE80211_CHANSTATE_CWINT	0x04	/* interference detected */
296 #define	IEEE80211_CHANSTATE_NORADAR	0x10	/* post notify on radar clear */
297 
298 #define	IEEE80211_IS_CHAN_RADAR(_c) \
299 	(((_c)->ic_state & IEEE80211_CHANSTATE_RADAR) != 0)
300 #define	IEEE80211_IS_CHAN_CACDONE(_c) \
301 	(((_c)->ic_state & IEEE80211_CHANSTATE_CACDONE) != 0)
302 #define	IEEE80211_IS_CHAN_CWINT(_c) \
303 	(((_c)->ic_state & IEEE80211_CHANSTATE_CWINT) != 0)
304 
305 /* ni_chan encoding for FH phy */
306 #define	IEEE80211_FH_CHANMOD	80
307 #define	IEEE80211_FH_CHAN(set,pat)	(((set)-1)*IEEE80211_FH_CHANMOD+(pat))
308 #define	IEEE80211_FH_CHANSET(chan)	((chan)/IEEE80211_FH_CHANMOD+1)
309 #define	IEEE80211_FH_CHANPAT(chan)	((chan)%IEEE80211_FH_CHANMOD)
310 
311 #define	IEEE80211_TID_SIZE	(WME_NUM_TID+1)	/* WME TID's +1 for non-QoS */
312 #define	IEEE80211_NONQOS_TID	WME_NUM_TID	/* index for non-QoS sta */
313 
314 /*
315  * The 802.11 spec says at most 2007 stations may be
316  * associated at once.  For most AP's this is way more
317  * than is feasible so we use a default of 128.  This
318  * number may be overridden by the driver and/or by
319  * user configuration but may not be less than IEEE80211_AID_MIN.
320  */
321 #define	IEEE80211_AID_DEF		128
322 #define	IEEE80211_AID_MIN		16
323 
324 /*
325  * 802.11 rate set.
326  */
327 #define	IEEE80211_RATE_SIZE	8		/* 802.11 standard */
328 #define	IEEE80211_RATE_MAXSIZE	15		/* max rates we'll handle */
329 
330 struct ieee80211_rateset {
331 	uint8_t		rs_nrates;
332 	uint8_t		rs_rates[IEEE80211_RATE_MAXSIZE];
333 };
334 
335 /*
336  * 802.11n variant of ieee80211_rateset.  Instead of
337  * legacy rates the entries are MCS rates.  We define
338  * the structure such that it can be used interchangeably
339  * with an ieee80211_rateset (modulo structure size).
340  */
341 #define	IEEE80211_HTRATE_MAXSIZE	77
342 
343 struct ieee80211_htrateset {
344 	uint8_t		rs_nrates;
345 	uint8_t		rs_rates[IEEE80211_HTRATE_MAXSIZE];
346 };
347 
348 #define	IEEE80211_RATE_MCS	0x80
349 
350 /*
351  * Per-mode transmit parameters/controls visible to user space.
352  * These can be used to set fixed transmit rate for all operating
353  * modes or on a per-client basis according to the capabilities
354  * of the client (e.g. an 11b client associated to an 11g ap).
355  *
356  * MCS are distinguished from legacy rates by or'ing in 0x80.
357  */
358 struct ieee80211_txparam {
359 	uint8_t		ucastrate;	/* ucast data rate (legacy/MCS|0x80) */
360 	uint8_t		mgmtrate;	/* mgmt frame rate (legacy/MCS|0x80) */
361 	uint8_t		mcastrate;	/* multicast rate (legacy/MCS|0x80) */
362 	uint8_t		maxretry;	/* max unicast data retry count */
363 };
364 
365 /*
366  * Per-mode roaming state visible to user space.  There are two
367  * thresholds that control whether roaming is considered; when
368  * either is exceeded the 802.11 layer will check the scan cache
369  * for another AP.  If the cache is stale then a scan may be
370  * triggered.
371  */
372 struct ieee80211_roamparam {
373 	int8_t		rssi;		/* rssi thresh (.5 dBm) */
374 	uint8_t		rate;		/* tx rate thresh (.5 Mb/s or MCS) */
375 	uint16_t	pad;		/* reserve */
376 };
377 
378 /*
379  * Regulatory Information.
380  */
381 struct ieee80211_regdomain {
382 	uint16_t	regdomain;	/* SKU */
383 	uint16_t	country;	/* ISO country code */
384 	uint8_t		location;	/* I (indoor), O (outdoor), other */
385 	uint8_t		ecm;		/* Extended Channel Mode */
386 	char		isocc[2];	/* country code string */
387 	short		pad[2];
388 };
389 
390 /*
391  * MIMO antenna/radio state.
392  */
393 
394 /*
395  * XXX This doesn't yet export both ctl/ext chain details
396  * XXX TODO: IEEE80211_MAX_CHAINS is defined in _freebsd.h, not here;
397  * figure out how to pull it in!
398  */
399 struct ieee80211_mimo_info {
400 	int8_t		rssi[3];	/* per-antenna rssi */
401 	int8_t		noise[3];	/* per-antenna noise floor */
402 	uint8_t		pad[2];
403 	uint32_t	evm[3];		/* EVM data */
404 };
405 #endif /* _NET80211__IEEE80211_H_ */
406