sys/netproto/802_11/ieee80211_dfs.h

   1 /*-
   2  * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD: head/sys/net80211/ieee80211_dfs.h 186107 2008-12-15 01:26:33Z sam $
  26  */
  27 #ifndef _NET80211_IEEE80211_DFS_H_
  28 #define _NET80211_IEEE80211_DFS_H_
  29
  30 /*
  31  * 802.11h/DFS definitions.
  32  */
  33
  34 struct ieee80211_dfs_state {
  35         int             nol_event[IEEE80211_CHAN_MAX];
  36         struct callout  nol_timer;              /* NOL list processing */
  37         struct callout  cac_timer;              /* CAC timer */
  38         struct timeval  lastevent;              /* time of last radar event */
  39         int             cureps;                 /* current events/second */
  40         const struct ieee80211_channel *lastchan;/* chan w/ last radar event */
  41         struct ieee80211_channel *newchan;      /* chan selected next */
  42 };
  43
  44 void    ieee80211_dfs_attach(struct ieee80211com *);
  45 void    ieee80211_dfs_detach(struct ieee80211com *);
  46
  47 void    ieee80211_dfs_reset(struct ieee80211com *);
  48
  49 void    ieee80211_dfs_cac_start(struct ieee80211vap *);
  50 void    ieee80211_dfs_cac_stop(struct ieee80211vap *);
  51 void    ieee80211_dfs_cac_clear(struct ieee80211com *,
  52                 const struct ieee80211_channel *);
  53
  54 void    ieee80211_dfs_notify_radar(struct ieee80211com *,
  55                 struct ieee80211_channel *);
  56 struct ieee80211_channel *ieee80211_dfs_pickchannel(struct ieee80211com *);
  57 #endif /* _NET80211_IEEE80211_DFS_H_ */