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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/net80211/ieee80211_amrr.h
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/*	$OpenBSD: ieee80211_amrr.h,v 1.3 2006/06/17 19:34:31 damien Exp $	*/

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/*-

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 * Copyright (c) 2006

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 *	Damien Bergamini <[email protected]>

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 *

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 * Permission to use, copy, modify, and distribute this software for any

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 * purpose with or without fee is hereby granted, provided that the above

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 * copyright notice and this permission notice appear in all copies.

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 *

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 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

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 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

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 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

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 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

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 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

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 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

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 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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 */

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#ifndef _NET80211_IEEE80211_AMRR_H_

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#define _NET80211_IEEE80211_AMRR_H_

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/*-

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 * Naive implementation of the Adaptive Multi Rate Retry algorithm:

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 *

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 * "IEEE 802.11 Rate Adaptation: A Practical Approach"

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 *  Mathieu Lacage, Hossein Manshaei, Thierry Turletti

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 *  INRIA Sophia - Projet Planete

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 *  http://www-sop.inria.fr/rapports/sophia/RR-5208.html

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 */

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/*

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 * Rate control settings.

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 */

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struct ieee80211vap;

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struct ieee80211_amrr {

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	u_int	amrr_min_success_threshold;

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	u_int	amrr_max_success_threshold;

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	int	amrr_interval;		/* update interval (ticks) */

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};

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#define IEEE80211_AMRR_MIN_SUCCESS_THRESHOLD	 1

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#define IEEE80211_AMRR_MAX_SUCCESS_THRESHOLD	15

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/*

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 * Rate control state for a given node.

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 */

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struct ieee80211_amrr_node {

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	struct ieee80211_amrr *amn_amrr;/* backpointer */

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	int	amn_rix;		/* current rate index */

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	int	amn_ticks;		/* time of last update */

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	/* for VHT, since there's no VHT RIX right now */

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	int	amn_vht_mcs;

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	int	amn_vht_nss;

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	/* statistics */

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	u_int	amn_txcnt;

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	u_int	amn_success;

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	u_int	amn_success_threshold;

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	u_int	amn_recovery;

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	u_int	amn_retrycnt;

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};

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#endif /* _NET80211_IEEE80211_AMRR_H_ */

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