1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27#ifndef _NET80211_IEEE80211_DFS_H_
28#define _NET80211_IEEE80211_DFS_H_
29
30/*
31 * 802.11h/DFS definitions.
32 */
33
34typedef enum {
35	DFS_DBG_NONE		= 0,
36	DFS_DBG_NONOL		= 1,
37	DFS_DBG_NOCSANOL	= 2
38} dfs_debug_t;
39
40struct ieee80211_dfs_state {
41	int		nol_event[IEEE80211_CHAN_MAX];
42	struct callout	nol_timer;		/* NOL list processing */
43	struct callout	cac_timer;		/* CAC timer */
44	struct timeval	lastevent;		/* time of last radar event */
45	int		cureps;			/* current events/second */
46	const struct ieee80211_channel *lastchan;/* chan w/ last radar event */
47	struct ieee80211_channel *newchan;	/* chan selected next */
48};
49
50void	ieee80211_dfs_attach(struct ieee80211com *);
51void	ieee80211_dfs_detach(struct ieee80211com *);
52
53void	ieee80211_dfs_reset(struct ieee80211com *);
54
55void	ieee80211_dfs_cac_start(struct ieee80211vap *);
56void	ieee80211_dfs_cac_stop(struct ieee80211vap *);
57void	ieee80211_dfs_cac_clear(struct ieee80211com *,
58		const struct ieee80211_channel *);
59
60void	ieee80211_dfs_notify_radar(struct ieee80211com *,
61		struct ieee80211_channel *);
62struct ieee80211_channel *ieee80211_dfs_pickchannel(struct ieee80211com *);
63#endif /* _NET80211_IEEE80211_DFS_H_ */
64