1/* $FreeBSD: releng/12.0/sys/net80211/ieee80211_amrr.h 206358 2010-04-07 15:29:13Z rpaulo $ */
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@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 */
35struct ieee80211vap;
36
37struct 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 */
49struct 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