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