The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_dfs.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    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  * $FreeBSD: releng/12.0/sys/net80211/ieee80211_dfs.h 326272 2017-11-27 15:23:17Z pfg $
   28  */
   29 #ifndef _NET80211_IEEE80211_DFS_H_
   30 #define _NET80211_IEEE80211_DFS_H_
   31 
   32 /*
   33  * 802.11h/DFS definitions.
   34  */
   35 
   36 typedef enum {
   37         DFS_DBG_NONE            = 0,
   38         DFS_DBG_NONOL           = 1,
   39         DFS_DBG_NOCSANOL        = 2
   40 } dfs_debug_t;
   41 
   42 struct ieee80211_dfs_state {
   43         int             nol_event[IEEE80211_CHAN_MAX];
   44         struct callout  nol_timer;              /* NOL list processing */
   45         struct callout  cac_timer;              /* CAC timer */
   46         struct timeval  lastevent;              /* time of last radar event */
   47         int             cureps;                 /* current events/second */
   48         const struct ieee80211_channel *lastchan;/* chan w/ last radar event */
   49         struct ieee80211_channel *newchan;      /* chan selected next */
   50 };
   51 
   52 void    ieee80211_dfs_attach(struct ieee80211com *);
   53 void    ieee80211_dfs_detach(struct ieee80211com *);
   54 
   55 void    ieee80211_dfs_reset(struct ieee80211com *);
   56 
   57 void    ieee80211_dfs_cac_start(struct ieee80211vap *);
   58 void    ieee80211_dfs_cac_stop(struct ieee80211vap *);
   59 void    ieee80211_dfs_cac_clear(struct ieee80211com *,
   60                 const struct ieee80211_channel *);
   61 
   62 void    ieee80211_dfs_notify_radar(struct ieee80211com *,
   63                 struct ieee80211_channel *);
   64 struct ieee80211_channel *ieee80211_dfs_pickchannel(struct ieee80211com *);
   65 #endif /* _NET80211_IEEE80211_DFS_H_ */

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