3569e353ca
Note this includes changes to all drivers and moves some device firmware loading to use firmware(9) and a separate module (e.g. ral). Also there no longer are separate wlan_scan* modules; this functionality is now bundled into the wlan module. Supported by: Hobnob and Marvell Reviewed by: many Obtained from: Atheros (some bits)
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/* $FreeBSD$ */
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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 <damien.bergamini@free.fr>
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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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/* 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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void ieee80211_amrr_init(struct ieee80211_amrr *, struct ieee80211vap *,
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int, int, int);
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void ieee80211_amrr_cleanup(struct ieee80211_amrr *);
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void ieee80211_amrr_setinterval(struct ieee80211_amrr *, int);
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void ieee80211_amrr_node_init(struct ieee80211_amrr *,
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struct ieee80211_amrr_node *, struct ieee80211_node *);
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int ieee80211_amrr_choose(struct ieee80211_node *,
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struct ieee80211_amrr_node *);
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#define IEEE80211_AMRR_SUCCESS 1
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#define IEEE80211_AMRR_FAILURE 0
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/*
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* Update statistics with tx complete status. Ok is non-zero
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* if the packet is known to be ACK'd. Retries has the number
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* retransmissions (i.e. xmit attempts - 1).
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*/
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static __inline void
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ieee80211_amrr_tx_complete(struct ieee80211_amrr_node *amn,
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int ok, int retries)
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{
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amn->amn_txcnt++;
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if (ok)
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amn->amn_success++;
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amn->amn_retrycnt += retries;
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}
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/*
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* Set tx count/retry statistics explicitly. Intended for
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* drivers that poll the device for statistics maintained
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* in the device.
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*/
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static __inline void
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ieee80211_amrr_tx_update(struct ieee80211_amrr_node *amn,
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int txcnt, int success, int retrycnt)
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{
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amn->amn_txcnt = txcnt;
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amn->amn_success = success;
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amn->amn_retrycnt = retrycnt;
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}
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#endif /* _NET80211_IEEE80211_AMRR_H_ */
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