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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/net80211/ieee80211_dfs.h
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/*-

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 * SPDX-License-Identifier: BSD-2-Clause

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 *

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 * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting

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 * All rights reserved.

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 *

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 * Redistribution and use in source and binary forms, with or without

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 * modification, are permitted provided that the following conditions

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 * are met:

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 * 1. Redistributions of source code must retain the above copyright

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 *    notice, this list of conditions and the following disclaimer.

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 * 2. Redistributions in binary form must reproduce the above copyright

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 *    notice, this list of conditions and the following disclaimer in the

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 *    documentation and/or other materials provided with the distribution.

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 *

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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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 */

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#ifndef _NET80211_IEEE80211_DFS_H_

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#define _NET80211_IEEE80211_DFS_H_

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/*

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 * 802.11h/DFS definitions.

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 */

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typedef enum {

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	DFS_DBG_NONE		= 0,

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	DFS_DBG_NONOL		= 1,

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	DFS_DBG_NOCSANOL	= 2

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} dfs_debug_t;

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struct ieee80211_dfs_state {

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	int		nol_event[IEEE80211_CHAN_MAX];

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	struct callout	nol_timer;		/* NOL list processing */

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	struct callout	cac_timer;		/* CAC timer */

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	struct timeval	lastevent;		/* time of last radar event */

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	int		cureps;			/* current events/second */

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	const struct ieee80211_channel *lastchan;/* chan w/ last radar event */

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	struct ieee80211_channel *newchan;	/* chan selected next */

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};

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void	ieee80211_dfs_attach(struct ieee80211com *);

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void	ieee80211_dfs_detach(struct ieee80211com *);

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void	ieee80211_dfs_reset(struct ieee80211com *);

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void	ieee80211_dfs_cac_start(struct ieee80211vap *);

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void	ieee80211_dfs_cac_stop(struct ieee80211vap *);

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void	ieee80211_dfs_cac_clear(struct ieee80211com *,

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		const struct ieee80211_channel *);

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void	ieee80211_dfs_notify_radar(struct ieee80211com *,

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		struct ieee80211_channel *);

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struct ieee80211_channel *ieee80211_dfs_pickchannel(struct ieee80211com *);

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#endif /* _NET80211_IEEE80211_DFS_H_ */

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