1164633Ssam/* $FreeBSD$ */
2164633Ssam/*	$OpenBSD: ieee80211_amrr.h,v 1.3 2006/06/17 19:34:31 damien Exp $	*/
3164633Ssam
4164633Ssam/*-
5164633Ssam * Copyright (c) 2006
6164633Ssam *	Damien Bergamini <damien.bergamini@free.fr>
7164633Ssam *
8164633Ssam * Permission to use, copy, modify, and distribute this software for any
9164633Ssam * purpose with or without fee is hereby granted, provided that the above
10164633Ssam * copyright notice and this permission notice appear in all copies.
11164633Ssam *
12164633Ssam * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13164633Ssam * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14164633Ssam * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15164633Ssam * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16164633Ssam * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17164633Ssam * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18164633Ssam * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19164633Ssam */
20164633Ssam#ifndef _NET80211_IEEE80211_AMRR_H_
21164633Ssam#define _NET80211_IEEE80211_AMRR_H_
22164633Ssam
23164633Ssam/*-
24164633Ssam * Naive implementation of the Adaptive Multi Rate Retry algorithm:
25164633Ssam *
26164633Ssam * "IEEE 802.11 Rate Adaptation: A Practical Approach"
27164633Ssam *  Mathieu Lacage, Hossein Manshaei, Thierry Turletti
28164633Ssam *  INRIA Sophia - Projet Planete
29164633Ssam *  http://www-sop.inria.fr/rapports/sophia/RR-5208.html
30164633Ssam */
31164633Ssam
32164633Ssam/*
33164633Ssam * Rate control settings.
34164633Ssam */
35178354Ssamstruct ieee80211vap;
36164633Ssam
37164633Ssamstruct ieee80211_amrr {
38164633Ssam	u_int	amrr_min_success_threshold;
39164633Ssam	u_int	amrr_max_success_threshold;
40178354Ssam	int	amrr_interval;		/* update interval (ticks) */
41164633Ssam};
42164633Ssam
43164633Ssam#define IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD	 1
44164633Ssam#define IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD	15
45164633Ssam
46164633Ssam/*
47164633Ssam * Rate control state for a given node.
48164633Ssam */
49164633Ssamstruct ieee80211_amrr_node {
50178354Ssam	struct ieee80211_amrr *amn_amrr;/* backpointer */
51178354Ssam	int	amn_rix;		/* current rate index */
52178354Ssam	int	amn_ticks;		/* time of last update */
53178354Ssam	/* statistics */
54178354Ssam	u_int	amn_txcnt;
55164633Ssam	u_int	amn_success;
56178354Ssam	u_int	amn_success_threshold;
57164633Ssam	u_int	amn_recovery;
58164633Ssam	u_int	amn_retrycnt;
59164633Ssam};
60164633Ssam
61164633Ssam#endif /* _NET80211_IEEE80211_AMRR_H_ */
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