1 /* $FreeBSD: head/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 */ 35 struct ieee80211vap; 36 37 struct 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 */ 49 struct 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