ieee80211_amrr.h revision 164633 
1/* $FreeBSD: head/sys/net80211/ieee80211_amrr.h 164633 2006-11-26 19:55:26Z sam $ */
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 ieee80211com;
36
37struct ieee80211_amrr {
38	u_int	amrr_min_success_threshold;
39	u_int	amrr_max_success_threshold;
40	struct ieee80211com *amrr_ic;
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	u_int	amn_success;
51	u_int	amn_recovery;
52	u_int	amn_success_threshold;
53	u_int	amn_txcnt;
54	u_int	amn_retrycnt;
55};
56
57void	ieee80211_amrr_init(struct ieee80211_amrr *,
58	    struct ieee80211com *ic, int, int);
59void	ieee80211_amrr_node_init(struct ieee80211_amrr *,
60	    struct ieee80211_amrr_node *);
61void	ieee80211_amrr_choose(struct ieee80211_amrr *, struct ieee80211_node *,
62	    struct ieee80211_amrr_node *);
63
64#endif /* _NET80211_IEEE80211_AMRR_H_ */
65