Home | History | Annotate | Line # | Download | only in net80211
ieee80211_amrr.h revision 1.1.52.1 
      1 /*	$NetBSD: ieee80211_amrr.h,v 1.1.52.1 2008/02/22 16:50:25 skrll Exp $	*/
      2 /*	$FreeBSD: src/sys/net80211/ieee80211_amrr.h,v 1.1 2006/11/26 19:55:26 sam Exp $	*/
      3 /*	$OpenBSD: ieee80211_amrr.h,v 1.3 2006/06/17 19:34:31 damien Exp $	*/
      4 
      5 /*-
      6  * Copyright (c) 2006
      7  *	Damien Bergamini <damien.bergamini (at) free.fr>
      8  *
      9  * Permission to use, copy, modify, and distribute this software for any
     10  * purpose with or without fee is hereby granted, provided that the above
     11  * copyright notice and this permission notice appear in all copies.
     12  *
     13  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     14  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     15  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     16  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     17  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     18  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     19  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     20  */
     21 #ifndef _NET80211_IEEE80211_AMRR_H_
     22 #define _NET80211_IEEE80211_AMRR_H_
     23 
     24 /*-
     25  * Naive implementation of the Adaptive Multi Rate Retry algorithm:
     26  *
     27  * "IEEE 802.11 Rate Adaptation: A Practical Approach"
     28  *  Mathieu Lacage, Hossein Manshaei, Thierry Turletti
     29  *  INRIA Sophia - Projet Planete
     30  *  http://www-sop.inria.fr/rapports/sophia/RR-5208.html
     31  */
     32 
     33 /*
     34  * Rate control settings.
     35  */
     36 struct ieee80211com;
     37 
     38 struct ieee80211_amrr {
     39 	u_int	amrr_min_success_threshold;
     40 	u_int	amrr_max_success_threshold;
     41 	struct ieee80211com *amrr_ic;
     42 };
     43 
     44 #define IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD	 1
     45 #define IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD	15
     46 
     47 /*
     48  * Rate control state for a given node.
     49  */
     50 struct ieee80211_amrr_node {
     51 	u_int	amn_success;
     52 	u_int	amn_recovery;
     53 	u_int	amn_success_threshold;
     54 	u_int	amn_txcnt;
     55 	u_int	amn_retrycnt;
     56 };
     57 
     58 void	ieee80211_amrr_init(struct ieee80211_amrr *,
     59 	    struct ieee80211com *ic, int, int);
     60 void	ieee80211_amrr_node_init(struct ieee80211_amrr *,
     61 	    struct ieee80211_amrr_node *);
     62 void	ieee80211_amrr_choose(struct ieee80211_amrr *, struct ieee80211_node *,
     63 	    struct ieee80211_amrr_node *);
     64 
     65 #endif /* _NET80211_IEEE80211_AMRR_H_ */
     66