xref: /freebsd/sys/net80211/ieee80211_proto.h (revision 0b57cec536236d46e3dba9bd041533462f33dbb7)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2001 Atsushi Onoe
5  * Copyright (c) 2002-2009 Sam Leffler, Errno Consulting
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD$
29  */
30 #ifndef _NET80211_IEEE80211_PROTO_H_
31 #define _NET80211_IEEE80211_PROTO_H_
32 
33 /*
34  * 802.11 protocol implementation definitions.
35  */
36 
37 enum ieee80211_state {
38 	IEEE80211_S_INIT	= 0,	/* default state */
39 	IEEE80211_S_SCAN	= 1,	/* scanning */
40 	IEEE80211_S_AUTH	= 2,	/* try to authenticate */
41 	IEEE80211_S_ASSOC	= 3,	/* try to assoc */
42 	IEEE80211_S_CAC		= 4,	/* doing channel availability check */
43 	IEEE80211_S_RUN		= 5,	/* operational (e.g. associated) */
44 	IEEE80211_S_CSA		= 6,	/* channel switch announce pending */
45 	IEEE80211_S_SLEEP	= 7,	/* power save */
46 };
47 #define	IEEE80211_S_MAX		(IEEE80211_S_SLEEP+1)
48 
49 #define	IEEE80211_SEND_MGMT(_ni,_type,_arg) \
50 	((*(_ni)->ni_ic->ic_send_mgmt)(_ni, _type, _arg))
51 
52 extern	const char *mgt_subtype_name[];
53 extern	const char *ctl_subtype_name[];
54 extern	const char *ieee80211_phymode_name[IEEE80211_MODE_MAX];
55 extern	const int ieee80211_opcap[IEEE80211_OPMODE_MAX];
56 
57 static __inline const char *
58 ieee80211_mgt_subtype_name(uint8_t subtype)
59 {
60 	return mgt_subtype_name[(subtype & IEEE80211_FC0_SUBTYPE_MASK) >>
61 		   IEEE80211_FC0_SUBTYPE_SHIFT];
62 }
63 
64 static __inline const char *
65 ieee80211_ctl_subtype_name(uint8_t subtype)
66 {
67 	return ctl_subtype_name[(subtype & IEEE80211_FC0_SUBTYPE_MASK) >>
68 		   IEEE80211_FC0_SUBTYPE_SHIFT];
69 }
70 
71 const char *ieee80211_reason_to_string(uint16_t);
72 
73 void	ieee80211_proto_attach(struct ieee80211com *);
74 void	ieee80211_proto_detach(struct ieee80211com *);
75 void	ieee80211_proto_vattach(struct ieee80211vap *);
76 void	ieee80211_proto_vdetach(struct ieee80211vap *);
77 
78 void	ieee80211_promisc(struct ieee80211vap *, bool);
79 void	ieee80211_allmulti(struct ieee80211vap *, bool);
80 void	ieee80211_syncflag(struct ieee80211vap *, int flag);
81 void	ieee80211_syncflag_ht(struct ieee80211vap *, int flag);
82 void	ieee80211_syncflag_vht(struct ieee80211vap *, int flag);
83 void	ieee80211_syncflag_ext(struct ieee80211vap *, int flag);
84 
85 #define	ieee80211_input(ni, m, rssi, nf) \
86 	((ni)->ni_vap->iv_input(ni, m, NULL, rssi, nf))
87 int	ieee80211_input_all(struct ieee80211com *, struct mbuf *, int, int);
88 
89 int	ieee80211_input_mimo(struct ieee80211_node *, struct mbuf *);
90 int	ieee80211_input_mimo_all(struct ieee80211com *, struct mbuf *);
91 
92 struct ieee80211_bpf_params;
93 int	ieee80211_mgmt_output(struct ieee80211_node *, struct mbuf *, int,
94 		struct ieee80211_bpf_params *);
95 int	ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *,
96 		const struct ieee80211_bpf_params *);
97 int	ieee80211_output(struct ifnet *, struct mbuf *,
98                const struct sockaddr *, struct route *ro);
99 int	ieee80211_vap_pkt_send_dest(struct ieee80211vap *, struct mbuf *,
100 		struct ieee80211_node *);
101 int	ieee80211_raw_output(struct ieee80211vap *, struct ieee80211_node *,
102 		struct mbuf *, const struct ieee80211_bpf_params *);
103 void	ieee80211_send_setup(struct ieee80211_node *, struct mbuf *, int, int,
104         const uint8_t [IEEE80211_ADDR_LEN], const uint8_t [IEEE80211_ADDR_LEN],
105         const uint8_t [IEEE80211_ADDR_LEN]);
106 int	ieee80211_vap_transmit(struct ifnet *ifp, struct mbuf *m);
107 void	ieee80211_vap_qflush(struct ifnet *ifp);
108 int	ieee80211_send_nulldata(struct ieee80211_node *);
109 int	ieee80211_classify(struct ieee80211_node *, struct mbuf *m);
110 struct mbuf *ieee80211_mbuf_adjust(struct ieee80211vap *, int,
111 		struct ieee80211_key *, struct mbuf *);
112 struct mbuf *ieee80211_encap(struct ieee80211vap *, struct ieee80211_node *,
113 		struct mbuf *);
114 void	ieee80211_free_mbuf(struct mbuf *);
115 int	ieee80211_send_mgmt(struct ieee80211_node *, int, int);
116 struct ieee80211_appie;
117 int	ieee80211_send_probereq(struct ieee80211_node *ni,
118 		const uint8_t sa[IEEE80211_ADDR_LEN],
119 		const uint8_t da[IEEE80211_ADDR_LEN],
120 		const uint8_t bssid[IEEE80211_ADDR_LEN],
121 		const uint8_t *ssid, size_t ssidlen);
122 struct mbuf *	ieee80211_ff_encap1(struct ieee80211vap *, struct mbuf *,
123 		const struct ether_header *);
124 void	ieee80211_tx_complete(struct ieee80211_node *,
125 		struct mbuf *, int);
126 
127 /*
128  * The formation of ProbeResponse frames requires guidance to
129  * deal with legacy clients.  When the client is identified as
130  * "legacy 11b" ieee80211_send_proberesp is passed this token.
131  */
132 #define	IEEE80211_SEND_LEGACY_11B	0x1	/* legacy 11b client */
133 #define	IEEE80211_SEND_LEGACY_11	0x2	/* other legacy client */
134 #define	IEEE80211_SEND_LEGACY		0x3	/* any legacy client */
135 struct mbuf *ieee80211_alloc_proberesp(struct ieee80211_node *, int);
136 int	ieee80211_send_proberesp(struct ieee80211vap *,
137 		const uint8_t da[IEEE80211_ADDR_LEN], int);
138 struct mbuf *ieee80211_alloc_rts(struct ieee80211com *ic,
139 		const uint8_t [IEEE80211_ADDR_LEN],
140 		const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
141 struct mbuf *ieee80211_alloc_cts(struct ieee80211com *,
142 		const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
143 struct mbuf *ieee80211_alloc_prot(struct ieee80211_node *,
144 		const struct mbuf *, uint8_t, int);
145 
146 uint8_t *ieee80211_add_rates(uint8_t *, const struct ieee80211_rateset *);
147 uint8_t *ieee80211_add_xrates(uint8_t *, const struct ieee80211_rateset *);
148 uint8_t *ieee80211_add_ssid(uint8_t *, const uint8_t *, u_int);
149 uint8_t *ieee80211_add_wpa(uint8_t *, const struct ieee80211vap *);
150 uint8_t *ieee80211_add_rsn(uint8_t *, const struct ieee80211vap *);
151 uint8_t *ieee80211_add_qos(uint8_t *, const struct ieee80211_node *);
152 uint16_t ieee80211_getcapinfo(struct ieee80211vap *,
153 		struct ieee80211_channel *);
154 struct ieee80211_wme_state;
155 uint8_t * ieee80211_add_wme_info(uint8_t *frm, struct ieee80211_wme_state *wme);
156 
157 void	ieee80211_reset_erp(struct ieee80211com *);
158 void	ieee80211_set_shortslottime(struct ieee80211com *, int onoff);
159 int	ieee80211_iserp_rateset(const struct ieee80211_rateset *);
160 void	ieee80211_setbasicrates(struct ieee80211_rateset *,
161 		enum ieee80211_phymode);
162 void	ieee80211_addbasicrates(struct ieee80211_rateset *,
163 		enum ieee80211_phymode);
164 
165 /*
166  * Return the size of the 802.11 header for a management or data frame.
167  */
168 static __inline int
169 ieee80211_hdrsize(const void *data)
170 {
171 	const struct ieee80211_frame *wh = data;
172 	int size = sizeof(struct ieee80211_frame);
173 
174 	/* NB: we don't handle control frames */
175 	KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
176 		("%s: control frame", __func__));
177 	if (IEEE80211_IS_DSTODS(wh))
178 		size += IEEE80211_ADDR_LEN;
179 	if (IEEE80211_QOS_HAS_SEQ(wh))
180 		size += sizeof(uint16_t);
181 	return size;
182 }
183 
184 /*
185  * Like ieee80211_hdrsize, but handles any type of frame.
186  */
187 static __inline int
188 ieee80211_anyhdrsize(const void *data)
189 {
190 	const struct ieee80211_frame *wh = data;
191 
192 	if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
193 		switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
194 		case IEEE80211_FC0_SUBTYPE_CTS:
195 		case IEEE80211_FC0_SUBTYPE_ACK:
196 			return sizeof(struct ieee80211_frame_ack);
197 		case IEEE80211_FC0_SUBTYPE_BAR:
198 			return sizeof(struct ieee80211_frame_bar);
199 		}
200 		return sizeof(struct ieee80211_frame_min);
201 	} else
202 		return ieee80211_hdrsize(data);
203 }
204 
205 /*
206  * Template for an in-kernel authenticator.  Authenticators
207  * register with the protocol code and are typically loaded
208  * as separate modules as needed.  One special authenticator
209  * is xauth; it intercepts requests so that protocols like
210  * WPA can be handled in user space.
211  */
212 struct ieee80211_authenticator {
213 	const char *ia_name;		/* printable name */
214 	int	(*ia_attach)(struct ieee80211vap *);
215 	void	(*ia_detach)(struct ieee80211vap *);
216 	void	(*ia_node_join)(struct ieee80211_node *);
217 	void	(*ia_node_leave)(struct ieee80211_node *);
218 };
219 void	ieee80211_authenticator_register(int type,
220 		const struct ieee80211_authenticator *);
221 void	ieee80211_authenticator_unregister(int type);
222 const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
223 
224 struct ieee80211req;
225 /*
226  * Template for an MAC ACL policy module.  Such modules
227  * register with the protocol code and are passed the sender's
228  * address of each received auth frame for validation.
229  */
230 struct ieee80211_aclator {
231 	const char *iac_name;		/* printable name */
232 	int	(*iac_attach)(struct ieee80211vap *);
233 	void	(*iac_detach)(struct ieee80211vap *);
234 	int	(*iac_check)(struct ieee80211vap *,
235 			const struct ieee80211_frame *wh);
236 	int	(*iac_add)(struct ieee80211vap *,
237 			const uint8_t mac[IEEE80211_ADDR_LEN]);
238 	int	(*iac_remove)(struct ieee80211vap *,
239 			const uint8_t mac[IEEE80211_ADDR_LEN]);
240 	int	(*iac_flush)(struct ieee80211vap *);
241 	int	(*iac_setpolicy)(struct ieee80211vap *, int);
242 	int	(*iac_getpolicy)(struct ieee80211vap *);
243 	int	(*iac_setioctl)(struct ieee80211vap *, struct ieee80211req *);
244 	int	(*iac_getioctl)(struct ieee80211vap *, struct ieee80211req *);
245 };
246 void	ieee80211_aclator_register(const struct ieee80211_aclator *);
247 void	ieee80211_aclator_unregister(const struct ieee80211_aclator *);
248 const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
249 
250 /* flags for ieee80211_fix_rate() */
251 #define	IEEE80211_F_DOSORT	0x00000001	/* sort rate list */
252 #define	IEEE80211_F_DOFRATE	0x00000002	/* use fixed legacy rate */
253 #define	IEEE80211_F_DONEGO	0x00000004	/* calc negotiated rate */
254 #define	IEEE80211_F_DODEL	0x00000008	/* delete ignore rate */
255 #define	IEEE80211_F_DOBRS	0x00000010	/* check basic rate set */
256 #define	IEEE80211_F_JOIN	0x00000020	/* sta joining our bss */
257 #define	IEEE80211_F_DOFMCS	0x00000040	/* use fixed HT rate */
258 int	ieee80211_fix_rate(struct ieee80211_node *,
259 		struct ieee80211_rateset *, int);
260 
261 /*
262  * WME/WMM support.
263  */
264 struct wmeParams {
265 	uint8_t		wmep_acm;
266 	uint8_t		wmep_aifsn;
267 	uint8_t		wmep_logcwmin;		/* log2(cwmin) */
268 	uint8_t		wmep_logcwmax;		/* log2(cwmax) */
269 	uint8_t		wmep_txopLimit;
270 	uint8_t		wmep_noackPolicy;	/* 0 (ack), 1 (no ack) */
271 };
272 #define	IEEE80211_TXOP_TO_US(_txop)	((_txop)<<5)
273 #define	IEEE80211_US_TO_TXOP(_us)	((_us)>>5)
274 
275 struct chanAccParams {
276 	uint8_t		cap_info;		/* version of the current set */
277 	struct wmeParams cap_wmeParams[WME_NUM_AC];
278 };
279 
280 struct ieee80211_wme_state {
281 	u_int	wme_flags;
282 #define	WME_F_AGGRMODE	0x00000001	/* STATUS: WME aggressive mode */
283 	u_int	wme_hipri_traffic;	/* VI/VO frames in beacon interval */
284 	u_int	wme_hipri_switch_thresh;/* aggressive mode switch thresh */
285 	u_int	wme_hipri_switch_hysteresis;/* aggressive mode switch hysteresis */
286 
287 	struct wmeParams wme_params[4];		/* from assoc resp for each AC*/
288 	struct chanAccParams wme_wmeChanParams;	/* WME params applied to self */
289 	struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
290 	struct chanAccParams wme_chanParams;	/* params applied to self */
291 	struct chanAccParams wme_bssChanParams;	/* params bcast to stations */
292 
293 	int	(*wme_update)(struct ieee80211com *);
294 };
295 
296 void	ieee80211_wme_initparams(struct ieee80211vap *);
297 void	ieee80211_wme_updateparams(struct ieee80211vap *);
298 void	ieee80211_wme_updateparams_locked(struct ieee80211vap *);
299 void	ieee80211_wme_vap_getparams(struct ieee80211vap *vap,
300 	    struct chanAccParams *);
301 void	ieee80211_wme_ic_getparams(struct ieee80211com *ic,
302 	    struct chanAccParams *);
303 int	ieee80211_wme_vap_ac_is_noack(struct ieee80211vap *vap, int ac);
304 
305 /*
306  * Return pointer to the QoS field from a Qos frame.
307  */
308 static __inline uint8_t *
309 ieee80211_getqos(void *data)
310 {
311 	struct ieee80211_frame *wh = data;
312 
313 	KASSERT(IEEE80211_QOS_HAS_SEQ(wh), ("QoS field is absent!"));
314 
315 	if (IEEE80211_IS_DSTODS(wh))
316 		return (((struct ieee80211_qosframe_addr4 *)wh)->i_qos);
317 	else
318 		return (((struct ieee80211_qosframe *)wh)->i_qos);
319 }
320 
321 /*
322  * Return the WME TID from a QoS frame.  If no TID
323  * is present return the index for the "non-QoS" entry.
324  */
325 static __inline uint8_t
326 ieee80211_gettid(const struct ieee80211_frame *wh)
327 {
328 	uint8_t tid;
329 
330 	if (IEEE80211_QOS_HAS_SEQ(wh)) {
331 		if (IEEE80211_IS_DSTODS(wh))
332 			tid = ((const struct ieee80211_qosframe_addr4 *)wh)->
333 				i_qos[0];
334 		else
335 			tid = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
336 		tid &= IEEE80211_QOS_TID;
337 	} else
338 		tid = IEEE80211_NONQOS_TID;
339 	return tid;
340 }
341 
342 void	ieee80211_waitfor_parent(struct ieee80211com *);
343 void	ieee80211_start_locked(struct ieee80211vap *);
344 void	ieee80211_init(void *);
345 void	ieee80211_start_all(struct ieee80211com *);
346 void	ieee80211_stop_locked(struct ieee80211vap *);
347 void	ieee80211_stop(struct ieee80211vap *);
348 void	ieee80211_stop_all(struct ieee80211com *);
349 void	ieee80211_suspend_all(struct ieee80211com *);
350 void	ieee80211_resume_all(struct ieee80211com *);
351 void	ieee80211_restart_all(struct ieee80211com *);
352 void	ieee80211_dturbo_switch(struct ieee80211vap *, int newflags);
353 void	ieee80211_swbmiss(void *arg);
354 void	ieee80211_beacon_miss(struct ieee80211com *);
355 int	ieee80211_new_state(struct ieee80211vap *, enum ieee80211_state, int);
356 int	ieee80211_new_state_locked(struct ieee80211vap *, enum ieee80211_state,
357 		int);
358 void	ieee80211_print_essid(const uint8_t *, int);
359 void	ieee80211_dump_pkt(struct ieee80211com *,
360 		const uint8_t *, int, int, int);
361 
362 extern 	const char *ieee80211_opmode_name[];
363 extern	const char *ieee80211_state_name[IEEE80211_S_MAX];
364 extern	const char *ieee80211_wme_acnames[];
365 
366 /*
367  * Beacon frames constructed by ieee80211_beacon_alloc
368  * have the following structure filled in so drivers
369  * can update the frame later w/ minimal overhead.
370  */
371 struct ieee80211_beacon_offsets {
372 	uint8_t		bo_flags[4];	/* update/state flags */
373 	uint16_t	*bo_caps;	/* capabilities */
374 	uint8_t		*bo_cfp;	/* start of CFParms element */
375 	uint8_t		*bo_tim;	/* start of atim/dtim */
376 	uint8_t		*bo_wme;	/* start of WME parameters */
377 	uint8_t		*bo_tdma;	/* start of TDMA parameters */
378 	uint8_t		*bo_tim_trailer;/* start of fixed-size trailer */
379 	uint16_t	bo_tim_len;	/* atim/dtim length in bytes */
380 	uint16_t	bo_tim_trailer_len;/* tim trailer length in bytes */
381 	uint8_t		*bo_erp;	/* start of ERP element */
382 	uint8_t		*bo_htinfo;	/* start of HT info element */
383 	uint8_t		*bo_ath;	/* start of ATH parameters */
384 	uint8_t		*bo_appie;	/* start of AppIE element */
385 	uint16_t	bo_appie_len;	/* AppIE length in bytes */
386 	uint16_t	bo_csa_trailer_len;
387 	uint8_t		*bo_csa;	/* start of CSA element */
388 	uint8_t		*bo_quiet;	/* start of Quiet element */
389 	uint8_t		*bo_meshconf;	/* start of MESHCONF element */
390 	uint8_t		*bo_vhtinfo;	/* start of VHT info element (XXX VHTCAP?) */
391 	uint8_t		*bo_spare[2];
392 };
393 struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *);
394 
395 /*
396  * Beacon frame updates are signaled through calls to iv_update_beacon
397  * with one of the IEEE80211_BEACON_* tokens defined below.  For devices
398  * that construct beacon frames on the host this can trigger a rebuild
399  * or defer the processing.  For devices that offload beacon frame
400  * handling this callback can be used to signal a rebuild.  The bo_flags
401  * array in the ieee80211_beacon_offsets structure is intended to record
402  * deferred processing requirements; ieee80211_beacon_update uses the
403  * state to optimize work.  Since this structure is owned by the driver
404  * and not visible to the 802.11 layer drivers must supply an iv_update_beacon
405  * callback that marks the flag bits and schedules (as necessary) an update.
406  */
407 enum {
408 	IEEE80211_BEACON_CAPS	= 0,	/* capabilities */
409 	IEEE80211_BEACON_TIM	= 1,	/* DTIM/ATIM */
410 	IEEE80211_BEACON_WME	= 2,
411 	IEEE80211_BEACON_ERP	= 3,	/* Extended Rate Phy */
412 	IEEE80211_BEACON_HTINFO	= 4,	/* HT Information */
413 	IEEE80211_BEACON_APPIE	= 5,	/* Application IE's */
414 	IEEE80211_BEACON_CFP	= 6,	/* CFParms */
415 	IEEE80211_BEACON_CSA	= 7,	/* Channel Switch Announcement */
416 	IEEE80211_BEACON_TDMA	= 9,	/* TDMA Info */
417 	IEEE80211_BEACON_ATH	= 10,	/* ATH parameters */
418 	IEEE80211_BEACON_MESHCONF = 11,	/* Mesh Configuration */
419 	IEEE80211_BEACON_QUIET	= 12,	/* Quiet time IE */
420 	IEEE80211_BEACON_VHTINFO	= 13,	/* VHT information */
421 };
422 int	ieee80211_beacon_update(struct ieee80211_node *,
423 		struct mbuf *, int mcast);
424 
425 void	ieee80211_csa_startswitch(struct ieee80211com *,
426 		struct ieee80211_channel *, int mode, int count);
427 void	ieee80211_csa_completeswitch(struct ieee80211com *);
428 void	ieee80211_csa_cancelswitch(struct ieee80211com *);
429 void	ieee80211_cac_completeswitch(struct ieee80211vap *);
430 
431 /*
432  * Notification methods called from the 802.11 state machine.
433  * Note that while these are defined here, their implementation
434  * is OS-specific.
435  */
436 void	ieee80211_notify_node_join(struct ieee80211_node *, int newassoc);
437 void	ieee80211_notify_node_leave(struct ieee80211_node *);
438 void	ieee80211_notify_scan_done(struct ieee80211vap *);
439 void	ieee80211_notify_wds_discover(struct ieee80211_node *);
440 void	ieee80211_notify_csa(struct ieee80211com *,
441 		const struct ieee80211_channel *, int mode, int count);
442 void	ieee80211_notify_radar(struct ieee80211com *,
443 		const struct ieee80211_channel *);
444 enum ieee80211_notify_cac_event {
445 	IEEE80211_NOTIFY_CAC_START  = 0, /* CAC timer started */
446 	IEEE80211_NOTIFY_CAC_STOP   = 1, /* CAC intentionally stopped */
447 	IEEE80211_NOTIFY_CAC_RADAR  = 2, /* CAC stopped due to radar detectio */
448 	IEEE80211_NOTIFY_CAC_EXPIRE = 3, /* CAC expired w/o radar */
449 };
450 void	ieee80211_notify_cac(struct ieee80211com *,
451 		const struct ieee80211_channel *,
452 		enum ieee80211_notify_cac_event);
453 void	ieee80211_notify_node_deauth(struct ieee80211_node *);
454 void	ieee80211_notify_node_auth(struct ieee80211_node *);
455 void	ieee80211_notify_country(struct ieee80211vap *, const uint8_t [],
456 		const uint8_t cc[2]);
457 void	ieee80211_notify_radio(struct ieee80211com *, int);
458 #endif /* _NET80211_IEEE80211_PROTO_H_ */
459