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 */ 34 struct ieee80211vap; 35 36 struct 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 */ 48 struct 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 /* statistics */ 53 u_int amn_txcnt; 54 u_int amn_success; 55 u_int amn_success_threshold; 56 u_int amn_recovery; 57 u_int amn_retrycnt; 58 }; 59 60 #endif /* _NET80211_IEEE80211_AMRR_H_ */ 61