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: releng/12.0/sys/net80211/ieee80211_proto.h 330688 2018-03-09 11:33:56Z avos $
29 */
30#ifndef _NET80211_IEEE80211_PROTO_H_
31#define _NET80211_IEEE80211_PROTO_H_
32
33/*
34 * 802.11 protocol implementation definitions.
35 */
36
37enum 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
52extern	const char *mgt_subtype_name[];
53extern	const char *ctl_subtype_name[];
54extern	const char *ieee80211_phymode_name[IEEE80211_MODE_MAX];
55extern	const int ieee80211_opcap[IEEE80211_OPMODE_MAX];
56
57static __inline const char *
58ieee80211_mgt_subtype_name(uint8_t subtype)
59{
60	return mgt_subtype_name[(subtype & IEEE80211_FC0_SUBTYPE_MASK) >>
61		   IEEE80211_FC0_SUBTYPE_SHIFT];
62}
63
64static __inline const char *
65ieee80211_ctl_subtype_name(uint8_t subtype)
66{
67	return ctl_subtype_name[(subtype & IEEE80211_FC0_SUBTYPE_MASK) >>
68		   IEEE80211_FC0_SUBTYPE_SHIFT];
69}
70
71const char *ieee80211_reason_to_string(uint16_t);
72
73void	ieee80211_proto_attach(struct ieee80211com *);
74void	ieee80211_proto_detach(struct ieee80211com *);
75void	ieee80211_proto_vattach(struct ieee80211vap *);
76void	ieee80211_proto_vdetach(struct ieee80211vap *);
77
78void	ieee80211_promisc(struct ieee80211vap *, bool);
79void	ieee80211_allmulti(struct ieee80211vap *, bool);
80void	ieee80211_syncflag(struct ieee80211vap *, int flag);
81void	ieee80211_syncflag_ht(struct ieee80211vap *, int flag);
82void	ieee80211_syncflag_vht(struct ieee80211vap *, int flag);
83void	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))
87int	ieee80211_input_all(struct ieee80211com *, struct mbuf *, int, int);
88
89int	ieee80211_input_mimo(struct ieee80211_node *, struct mbuf *);
90int	ieee80211_input_mimo_all(struct ieee80211com *, struct mbuf *);
91
92struct ieee80211_bpf_params;
93int	ieee80211_mgmt_output(struct ieee80211_node *, struct mbuf *, int,
94		struct ieee80211_bpf_params *);
95int	ieee80211_raw_xmit(struct ieee80211_node *, struct mbuf *,
96		const struct ieee80211_bpf_params *);
97int	ieee80211_output(struct ifnet *, struct mbuf *,
98               const struct sockaddr *, struct route *ro);
99int	ieee80211_vap_pkt_send_dest(struct ieee80211vap *, struct mbuf *,
100		struct ieee80211_node *);
101int	ieee80211_raw_output(struct ieee80211vap *, struct ieee80211_node *,
102		struct mbuf *, const struct ieee80211_bpf_params *);
103void	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]);
106int	ieee80211_vap_transmit(struct ifnet *ifp, struct mbuf *m);
107void	ieee80211_vap_qflush(struct ifnet *ifp);
108int	ieee80211_send_nulldata(struct ieee80211_node *);
109int	ieee80211_classify(struct ieee80211_node *, struct mbuf *m);
110struct mbuf *ieee80211_mbuf_adjust(struct ieee80211vap *, int,
111		struct ieee80211_key *, struct mbuf *);
112struct mbuf *ieee80211_encap(struct ieee80211vap *, struct ieee80211_node *,
113		struct mbuf *);
114void	ieee80211_free_mbuf(struct mbuf *);
115int	ieee80211_send_mgmt(struct ieee80211_node *, int, int);
116struct ieee80211_appie;
117int	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);
122struct mbuf *	ieee80211_ff_encap1(struct ieee80211vap *, struct mbuf *,
123		const struct ether_header *);
124void	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 */
135struct mbuf *ieee80211_alloc_proberesp(struct ieee80211_node *, int);
136int	ieee80211_send_proberesp(struct ieee80211vap *,
137		const uint8_t da[IEEE80211_ADDR_LEN], int);
138struct mbuf *ieee80211_alloc_rts(struct ieee80211com *ic,
139		const uint8_t [IEEE80211_ADDR_LEN],
140		const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
141struct mbuf *ieee80211_alloc_cts(struct ieee80211com *,
142		const uint8_t [IEEE80211_ADDR_LEN], uint16_t);
143struct mbuf *ieee80211_alloc_prot(struct ieee80211_node *,
144		const struct mbuf *, uint8_t, int);
145
146uint8_t *ieee80211_add_rates(uint8_t *, const struct ieee80211_rateset *);
147uint8_t *ieee80211_add_xrates(uint8_t *, const struct ieee80211_rateset *);
148uint8_t *ieee80211_add_ssid(uint8_t *, const uint8_t *, u_int);
149uint8_t *ieee80211_add_wpa(uint8_t *, const struct ieee80211vap *);
150uint8_t *ieee80211_add_rsn(uint8_t *, const struct ieee80211vap *);
151uint8_t *ieee80211_add_qos(uint8_t *, const struct ieee80211_node *);
152uint16_t ieee80211_getcapinfo(struct ieee80211vap *,
153		struct ieee80211_channel *);
154struct ieee80211_wme_state;
155uint8_t * ieee80211_add_wme_info(uint8_t *frm, struct ieee80211_wme_state *wme,
156	    struct ieee80211_node *ni);
157
158void	ieee80211_vap_reset_erp(struct ieee80211vap *);
159void	ieee80211_reset_erp(struct ieee80211com *);
160void	ieee80211_vap_set_shortslottime(struct ieee80211vap *, int onoff);
161int	ieee80211_iserp_rateset(const struct ieee80211_rateset *);
162void	ieee80211_setbasicrates(struct ieee80211_rateset *,
163		enum ieee80211_phymode);
164void	ieee80211_addbasicrates(struct ieee80211_rateset *,
165		enum ieee80211_phymode);
166
167/*
168 * Return the size of the 802.11 header for a management or data frame.
169 */
170static __inline int
171ieee80211_hdrsize(const void *data)
172{
173	const struct ieee80211_frame *wh = (const struct ieee80211_frame*)data;
174	int size = sizeof(struct ieee80211_frame);
175
176	/* NB: we don't handle control frames */
177	KASSERT((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_CTL,
178		("%s: control frame", __func__));
179	if (IEEE80211_IS_DSTODS(wh))
180		size += IEEE80211_ADDR_LEN;
181	if (IEEE80211_QOS_HAS_SEQ(wh))
182		size += sizeof(uint16_t);
183	return size;
184}
185
186/*
187 * Like ieee80211_hdrsize, but handles any type of frame.
188 */
189static __inline int
190ieee80211_anyhdrsize(const void *data)
191{
192	const struct ieee80211_frame *wh = (const struct ieee80211_frame*)data;
193
194	if ((wh->i_fc[0]&IEEE80211_FC0_TYPE_MASK) == IEEE80211_FC0_TYPE_CTL) {
195		switch (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) {
196		case IEEE80211_FC0_SUBTYPE_CTS:
197		case IEEE80211_FC0_SUBTYPE_ACK:
198			return sizeof(struct ieee80211_frame_ack);
199		case IEEE80211_FC0_SUBTYPE_BAR:
200			return sizeof(struct ieee80211_frame_bar);
201		}
202		return sizeof(struct ieee80211_frame_min);
203	} else
204		return ieee80211_hdrsize(data);
205}
206
207/*
208 * Template for an in-kernel authenticator.  Authenticators
209 * register with the protocol code and are typically loaded
210 * as separate modules as needed.  One special authenticator
211 * is xauth; it intercepts requests so that protocols like
212 * WPA can be handled in user space.
213 */
214struct ieee80211_authenticator {
215	const char *ia_name;		/* printable name */
216	int	(*ia_attach)(struct ieee80211vap *);
217	void	(*ia_detach)(struct ieee80211vap *);
218	void	(*ia_node_join)(struct ieee80211_node *);
219	void	(*ia_node_leave)(struct ieee80211_node *);
220};
221void	ieee80211_authenticator_register(int type,
222		const struct ieee80211_authenticator *);
223void	ieee80211_authenticator_unregister(int type);
224const struct ieee80211_authenticator *ieee80211_authenticator_get(int auth);
225
226struct ieee80211req;
227/*
228 * Template for an MAC ACL policy module.  Such modules
229 * register with the protocol code and are passed the sender's
230 * address of each received auth frame for validation.
231 */
232struct ieee80211_aclator {
233	const char *iac_name;		/* printable name */
234	int	(*iac_attach)(struct ieee80211vap *);
235	void	(*iac_detach)(struct ieee80211vap *);
236	int	(*iac_check)(struct ieee80211vap *,
237			const struct ieee80211_frame *wh);
238	int	(*iac_add)(struct ieee80211vap *,
239			const uint8_t mac[IEEE80211_ADDR_LEN]);
240	int	(*iac_remove)(struct ieee80211vap *,
241			const uint8_t mac[IEEE80211_ADDR_LEN]);
242	int	(*iac_flush)(struct ieee80211vap *);
243	int	(*iac_setpolicy)(struct ieee80211vap *, int);
244	int	(*iac_getpolicy)(struct ieee80211vap *);
245	int	(*iac_setioctl)(struct ieee80211vap *, struct ieee80211req *);
246	int	(*iac_getioctl)(struct ieee80211vap *, struct ieee80211req *);
247};
248void	ieee80211_aclator_register(const struct ieee80211_aclator *);
249void	ieee80211_aclator_unregister(const struct ieee80211_aclator *);
250const struct ieee80211_aclator *ieee80211_aclator_get(const char *name);
251
252/* flags for ieee80211_fix_rate() */
253#define	IEEE80211_F_DOSORT	0x00000001	/* sort rate list */
254#define	IEEE80211_F_DOFRATE	0x00000002	/* use fixed legacy rate */
255#define	IEEE80211_F_DONEGO	0x00000004	/* calc negotiated rate */
256#define	IEEE80211_F_DODEL	0x00000008	/* delete ignore rate */
257#define	IEEE80211_F_DOBRS	0x00000010	/* check basic rate set */
258#define	IEEE80211_F_JOIN	0x00000020	/* sta joining our bss */
259#define	IEEE80211_F_DOFMCS	0x00000040	/* use fixed HT rate */
260int	ieee80211_fix_rate(struct ieee80211_node *,
261		struct ieee80211_rateset *, int);
262
263/*
264 * WME/WMM support.
265 */
266struct wmeParams {
267	uint8_t		wmep_acm;
268	uint8_t		wmep_aifsn;
269	uint8_t		wmep_logcwmin;		/* log2(cwmin) */
270	uint8_t		wmep_logcwmax;		/* log2(cwmax) */
271	uint8_t		wmep_txopLimit;
272	uint8_t		wmep_noackPolicy;	/* 0 (ack), 1 (no ack) */
273};
274#define	IEEE80211_TXOP_TO_US(_txop)	((_txop)<<5)
275#define	IEEE80211_US_TO_TXOP(_us)	((_us)>>5)
276
277struct chanAccParams {
278	uint8_t		cap_info;		/* version of the current set */
279	struct wmeParams cap_wmeParams[WME_NUM_AC];
280};
281
282struct ieee80211_wme_state {
283	u_int	wme_flags;
284#define	WME_F_AGGRMODE	0x00000001	/* STATUS: WME aggressive mode */
285	u_int	wme_hipri_traffic;	/* VI/VO frames in beacon interval */
286	u_int	wme_hipri_switch_thresh;/* aggressive mode switch thresh */
287	u_int	wme_hipri_switch_hysteresis;/* aggressive mode switch hysteresis */
288
289	struct wmeParams wme_params[WME_NUM_AC]; /* from assoc resp for each AC */
290	struct chanAccParams wme_wmeChanParams;	/* WME params applied to self */
291	struct chanAccParams wme_wmeBssChanParams;/* WME params bcast to stations */
292	struct chanAccParams wme_chanParams;	/* params applied to self */
293	struct chanAccParams wme_bssChanParams;	/* params bcast to stations */
294
295	int	(*wme_update)(struct ieee80211com *);
296};
297
298void	ieee80211_wme_initparams(struct ieee80211vap *);
299void	ieee80211_wme_updateparams(struct ieee80211vap *);
300void	ieee80211_wme_updateparams_locked(struct ieee80211vap *);
301void	ieee80211_wme_vap_getparams(struct ieee80211vap *vap,
302	    struct chanAccParams *);
303void	ieee80211_wme_ic_getparams(struct ieee80211com *ic,
304	    struct chanAccParams *);
305int	ieee80211_wme_vap_ac_is_noack(struct ieee80211vap *vap, int ac);
306void	ieee80211_vap_update_preamble(struct ieee80211vap *vap);
307void	ieee80211_vap_update_erp_protmode(struct ieee80211vap *vap);
308void	ieee80211_vap_update_ht_protmode(struct ieee80211vap *vap);
309
310/*
311 * Return pointer to the QoS field from a Qos frame.
312 */
313static __inline uint8_t *
314ieee80211_getqos(void *data)
315{
316	struct ieee80211_frame *wh = (struct ieee80211_frame *)data;
317
318	KASSERT(IEEE80211_QOS_HAS_SEQ(wh), ("QoS field is absent!"));
319
320	if (IEEE80211_IS_DSTODS(wh))
321		return (((struct ieee80211_qosframe_addr4 *)wh)->i_qos);
322	else
323		return (((struct ieee80211_qosframe *)wh)->i_qos);
324}
325
326/*
327 * Return the WME TID from a QoS frame.  If no TID
328 * is present return the index for the "non-QoS" entry.
329 */
330static __inline uint8_t
331ieee80211_gettid(const struct ieee80211_frame *wh)
332{
333	uint8_t tid;
334
335	if (IEEE80211_QOS_HAS_SEQ(wh)) {
336		if (IEEE80211_IS_DSTODS(wh))
337			tid = ((const struct ieee80211_qosframe_addr4 *)wh)->
338				i_qos[0];
339		else
340			tid = ((const struct ieee80211_qosframe *)wh)->i_qos[0];
341		tid &= IEEE80211_QOS_TID;
342	} else
343		tid = IEEE80211_NONQOS_TID;
344	return tid;
345}
346
347void	ieee80211_waitfor_parent(struct ieee80211com *);
348void	ieee80211_start_locked(struct ieee80211vap *);
349void	ieee80211_init(void *);
350void	ieee80211_start_all(struct ieee80211com *);
351void	ieee80211_stop_locked(struct ieee80211vap *);
352void	ieee80211_stop(struct ieee80211vap *);
353void	ieee80211_stop_all(struct ieee80211com *);
354void	ieee80211_suspend_all(struct ieee80211com *);
355void	ieee80211_resume_all(struct ieee80211com *);
356void	ieee80211_restart_all(struct ieee80211com *);
357void	ieee80211_dturbo_switch(struct ieee80211vap *, int newflags);
358void	ieee80211_swbmiss(void *arg);
359void	ieee80211_beacon_miss(struct ieee80211com *);
360int	ieee80211_new_state(struct ieee80211vap *, enum ieee80211_state, int);
361int	ieee80211_new_state_locked(struct ieee80211vap *, enum ieee80211_state,
362		int);
363void	ieee80211_print_essid(const uint8_t *, int);
364void	ieee80211_dump_pkt(struct ieee80211com *,
365		const uint8_t *, int, int, int);
366
367extern 	const char *ieee80211_opmode_name[];
368extern	const char *ieee80211_state_name[IEEE80211_S_MAX];
369extern	const char *ieee80211_wme_acnames[];
370
371/*
372 * Beacon frames constructed by ieee80211_beacon_alloc
373 * have the following structure filled in so drivers
374 * can update the frame later w/ minimal overhead.
375 */
376struct ieee80211_beacon_offsets {
377	uint8_t		bo_flags[4];	/* update/state flags */
378	uint16_t	*bo_caps;	/* capabilities */
379	uint8_t		*bo_cfp;	/* start of CFParms element */
380	uint8_t		*bo_tim;	/* start of atim/dtim */
381	uint8_t		*bo_wme;	/* start of WME parameters */
382	uint8_t		*bo_tdma;	/* start of TDMA parameters */
383	uint8_t		*bo_tim_trailer;/* start of fixed-size trailer */
384	uint16_t	bo_tim_len;	/* atim/dtim length in bytes */
385	uint16_t	bo_tim_trailer_len;/* tim trailer length in bytes */
386	uint8_t		*bo_erp;	/* start of ERP element */
387	uint8_t		*bo_htinfo;	/* start of HT info element */
388	uint8_t		*bo_ath;	/* start of ATH parameters */
389	uint8_t		*bo_appie;	/* start of AppIE element */
390	uint16_t	bo_appie_len;	/* AppIE length in bytes */
391	uint16_t	bo_csa_trailer_len;
392	uint8_t		*bo_csa;	/* start of CSA element */
393	uint8_t		*bo_quiet;	/* start of Quiet element */
394	uint8_t		*bo_meshconf;	/* start of MESHCONF element */
395	uint8_t		*bo_vhtinfo;	/* start of VHT info element (XXX VHTCAP?) */
396	uint8_t		*bo_spare[2];
397};
398struct mbuf *ieee80211_beacon_alloc(struct ieee80211_node *);
399
400/*
401 * Beacon frame updates are signaled through calls to iv_update_beacon
402 * with one of the IEEE80211_BEACON_* tokens defined below.  For devices
403 * that construct beacon frames on the host this can trigger a rebuild
404 * or defer the processing.  For devices that offload beacon frame
405 * handling this callback can be used to signal a rebuild.  The bo_flags
406 * array in the ieee80211_beacon_offsets structure is intended to record
407 * deferred processing requirements; ieee80211_beacon_update uses the
408 * state to optimize work.  Since this structure is owned by the driver
409 * and not visible to the 802.11 layer drivers must supply an iv_update_beacon
410 * callback that marks the flag bits and schedules (as necessary) an update.
411 */
412enum {
413	IEEE80211_BEACON_CAPS	= 0,	/* capabilities */
414	IEEE80211_BEACON_TIM	= 1,	/* DTIM/ATIM */
415	IEEE80211_BEACON_WME	= 2,
416	IEEE80211_BEACON_ERP	= 3,	/* Extended Rate Phy */
417	IEEE80211_BEACON_HTINFO	= 4,	/* HT Information */
418	IEEE80211_BEACON_APPIE	= 5,	/* Application IE's */
419	IEEE80211_BEACON_CFP	= 6,	/* CFParms */
420	IEEE80211_BEACON_CSA	= 7,	/* Channel Switch Announcement */
421	IEEE80211_BEACON_TDMA	= 9,	/* TDMA Info */
422	IEEE80211_BEACON_ATH	= 10,	/* ATH parameters */
423	IEEE80211_BEACON_MESHCONF = 11,	/* Mesh Configuration */
424	IEEE80211_BEACON_QUIET	= 12,	/* Quiet time IE */
425	IEEE80211_BEACON_VHTINFO	= 13,	/* VHT information */
426};
427int	ieee80211_beacon_update(struct ieee80211_node *,
428		struct mbuf *, int mcast);
429
430void	ieee80211_csa_startswitch(struct ieee80211com *,
431		struct ieee80211_channel *, int mode, int count);
432void	ieee80211_csa_completeswitch(struct ieee80211com *);
433void	ieee80211_csa_cancelswitch(struct ieee80211com *);
434void	ieee80211_cac_completeswitch(struct ieee80211vap *);
435
436/*
437 * Notification methods called from the 802.11 state machine.
438 * Note that while these are defined here, their implementation
439 * is OS-specific.
440 */
441void	ieee80211_notify_node_join(struct ieee80211_node *, int newassoc);
442void	ieee80211_notify_node_leave(struct ieee80211_node *);
443void	ieee80211_notify_scan_done(struct ieee80211vap *);
444void	ieee80211_notify_wds_discover(struct ieee80211_node *);
445void	ieee80211_notify_csa(struct ieee80211com *,
446		const struct ieee80211_channel *, int mode, int count);
447void	ieee80211_notify_radar(struct ieee80211com *,
448		const struct ieee80211_channel *);
449enum ieee80211_notify_cac_event {
450	IEEE80211_NOTIFY_CAC_START  = 0, /* CAC timer started */
451	IEEE80211_NOTIFY_CAC_STOP   = 1, /* CAC intentionally stopped */
452	IEEE80211_NOTIFY_CAC_RADAR  = 2, /* CAC stopped due to radar detectio */
453	IEEE80211_NOTIFY_CAC_EXPIRE = 3, /* CAC expired w/o radar */
454};
455void	ieee80211_notify_cac(struct ieee80211com *,
456		const struct ieee80211_channel *,
457		enum ieee80211_notify_cac_event);
458void	ieee80211_notify_node_deauth(struct ieee80211_node *);
459void	ieee80211_notify_node_auth(struct ieee80211_node *);
460void	ieee80211_notify_country(struct ieee80211vap *, const uint8_t [],
461		const uint8_t cc[2]);
462void	ieee80211_notify_radio(struct ieee80211com *, int);
463void	ieee80211_notify_ifnet_change(struct ieee80211vap *);
464#endif /* _NET80211_IEEE80211_PROTO_H_ */
465