1 /* $OpenBSD: ieee80211_amrr.h,v 1.4 2007/06/16 13:17:05 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 */
34 struct ieee80211_amrr {
35 u_int amrr_min_success_threshold;
36 u_int amrr_max_success_threshold;
37 };
38
39 #define IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD 1
40 #define IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD 15
41
42 /*
43 * Rate control state for a given node.
44 */
45 struct ieee80211_amrr_node {
46 u_int amn_success;
47 u_int amn_recovery;
48 u_int amn_success_threshold;
49 u_int amn_txcnt;
50 u_int amn_retrycnt;
51 };
52
53 void ieee80211_amrr_node_init(const struct ieee80211_amrr *,
54 struct ieee80211_amrr_node *);
55 void ieee80211_amrr_choose(struct ieee80211_amrr *, struct ieee80211_node *,
56 struct ieee80211_amrr_node *);
57
58 #endif /* _NET80211_IEEE80211_AMRR_H_ */