The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_amrr.h

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    1 /* $FreeBSD: stable/9/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_ */

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