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ieee80211_amrr.h revision 1.1.148.1 
      1 /* $FreeBSD$ */
      2 /*	$OpenBSD: ieee80211_amrr.h,v 1.3 2006/06/17 19:34:31 damien Exp $	*/
      3 
      4 /*-
      5  * Copyright (c) 2006
      6  *	Damien Bergamini <damien.bergamini (at) free.fr>
      7  *
      8  * Permission to use, copy, modify, and distribute this software for any
      9  * purpose with or without fee is hereby granted, provided that the above
     10  * copyright notice and this permission notice appear in all copies.
     11  *
     12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     19  */
     20 #ifndef _NET80211_IEEE80211_AMRR_H_
     21 #define _NET80211_IEEE80211_AMRR_H_
     22 
     23 /*-
     24  * Naive implementation of the Adaptive Multi Rate Retry algorithm:
     25  *
     26  * "IEEE 802.11 Rate Adaptation: A Practical Approach"
     27  *  Mathieu Lacage, Hossein Manshaei, Thierry Turletti
     28  *  INRIA Sophia - Projet Planete
     29  *  http://www-sop.inria.fr/rapports/sophia/RR-5208.html
     30  */
     31 
     32 /*
     33  * Rate control settings.
     34  */
     35 struct ieee80211vap;
     36 
     37 struct ieee80211_amrr {
     38 	u_int	amrr_min_success_threshold;
     39 	u_int	amrr_max_success_threshold;
     40 	int	amrr_interval;		/* update interval (ticks) */
     41 };
     42 
     43 #define IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD	 1
     44 #define IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD	15
     45 
     46 /*
     47  * Rate control state for a given node.
     48  */
     49 struct ieee80211_amrr_node {
     50 	struct ieee80211_amrr *amn_amrr;/* backpointer */
     51 	int	amn_rix;		/* current rate index */
     52 	int	amn_ticks;		/* time of last update */
     53 	/* statistics */
     54 	u_int	amn_txcnt;
     55 	u_int	amn_success;
     56 	u_int	amn_success_threshold;
     57 	u_int	amn_recovery;
     58 	u_int	amn_retrycnt;
     59 };
     60 
     61 #endif /* _NET80211_IEEE80211_AMRR_H_ */
     62