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ieee80211_amrr.h revision 1.1.148.2 
      1 /*	$NetBSD: ieee80211_amrr.h,v 1.1.148.2 2018/06/28 21:23:01 phil Exp $ */
      2 
      3 /* $FreeBSD$ */
      4 /*	$OpenBSD: ieee80211_amrr.h,v 1.3 2006/06/17 19:34:31 damien Exp $	*/
      5 
      6 /*-
      7  * Copyright (c) 2006
      8  *	Damien Bergamini <damien.bergamini (at) free.fr>
      9  *
     10  * Permission to use, copy, modify, and distribute this software for any
     11  * purpose with or without fee is hereby granted, provided that the above
     12  * copyright notice and this permission notice appear in all copies.
     13  *
     14  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     15  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     16  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     17  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     18  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     19  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     20  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     21  */
     22 #ifndef _NET80211_IEEE80211_AMRR_H_
     23 #define _NET80211_IEEE80211_AMRR_H_
     24 
     25 /*-
     26  * Naive implementation of the Adaptive Multi Rate Retry algorithm:
     27  *
     28  * "IEEE 802.11 Rate Adaptation: A Practical Approach"
     29  *  Mathieu Lacage, Hossein Manshaei, Thierry Turletti
     30  *  INRIA Sophia - Projet Planete
     31  *  http://www-sop.inria.fr/rapports/sophia/RR-5208.html
     32  */
     33 
     34 /*
     35  * Rate control settings.
     36  */
     37 struct ieee80211vap;
     38 
     39 struct ieee80211_amrr {
     40 	u_int	amrr_min_success_threshold;
     41 	u_int	amrr_max_success_threshold;
     42 	int	amrr_interval;		/* update interval (ticks) */
     43 };
     44 
     45 #define IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD	 1
     46 #define IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD	15
     47 
     48 /*
     49  * Rate control state for a given node.
     50  */
     51 struct ieee80211_amrr_node {
     52 	struct ieee80211_amrr *amn_amrr;/* backpointer */
     53 	int	amn_rix;		/* current rate index */
     54 	int	amn_ticks;		/* time of last update */
     55 	/* statistics */
     56 	u_int	amn_txcnt;
     57 	u_int	amn_success;
     58 	u_int	amn_success_threshold;
     59 	u_int	amn_recovery;
     60 	u_int	amn_retrycnt;
     61 };
     62 
     63 #endif /* _NET80211_IEEE80211_AMRR_H_ */
     64