1 /* $FreeBSD: releng/7.3/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 */
35 struct ieee80211com;
36
37 struct 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 */
49 struct 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
57 void ieee80211_amrr_init(struct ieee80211_amrr *,
58 struct ieee80211com *ic, int, int);
59 void ieee80211_amrr_node_init(struct ieee80211_amrr *,
60 struct ieee80211_amrr_node *);
61 void ieee80211_amrr_choose(struct ieee80211_amrr *, struct ieee80211_node *,
62 struct ieee80211_amrr_node *);
63
64 #endif /* _NET80211_IEEE80211_AMRR_H_ */
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