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https://github.com/proski/madwifi
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65b2749123
git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@3808 0192ed92-7a03-0410-a25b-9323aeb14dbd
141 lines
4.6 KiB
C
141 lines
4.6 KiB
C
/*-
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* Copyright (c) 2005 John Bicket
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id$
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*/
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/*
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* Definitions for the Atheros Wireless LAN controller driver.
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*/
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#ifndef _DEV_ATH_RATE_SAMPLE_H
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#define _DEV_ATH_RATE_SAMPLE_H
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/* per-device state */
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struct sample_softc {
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struct ath_ratectrl arc; /* base state */
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int ath_smoothing_rate; /* ewma percentage (out of 100) */
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int ath_sample_rate; /* send a different bit-rate 1/X packets */
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};
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#define ATH_SOFTC_SAMPLE(sc) ((struct sample_softc *)sc->sc_rc)
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struct rate_info {
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int rate;
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int rix;
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int rateCode;
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int shortPreambleRateCode;
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};
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struct rate_stats {
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unsigned average_tx_time;
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int successive_failures;
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int tries;
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int total_packets;
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int packets_acked;
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unsigned perfect_tx_time; /* transmit time for 0 retries */
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unsigned long last_tx;
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};
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/*
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* for now, we track performance for three different packet
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* size buckets
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*/
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#define NUM_PACKET_SIZE_BINS 3
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static int packet_size_bins[NUM_PACKET_SIZE_BINS] = {250, 1600, 3000};
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/* per-node state */
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struct sample_node {
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int static_rate_ndx;
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int num_rates;
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struct rate_info rates[IEEE80211_RATE_MAXSIZE];
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struct rate_stats stats[NUM_PACKET_SIZE_BINS][IEEE80211_RATE_MAXSIZE];
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int last_sample_ndx[NUM_PACKET_SIZE_BINS];
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int current_sample_ndx[NUM_PACKET_SIZE_BINS];
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int packets_sent[NUM_PACKET_SIZE_BINS];
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int current_rate[NUM_PACKET_SIZE_BINS];
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int packets_since_switch[NUM_PACKET_SIZE_BINS];
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unsigned long jiffies_since_switch[NUM_PACKET_SIZE_BINS];
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int packets_since_sample[NUM_PACKET_SIZE_BINS];
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unsigned sample_tt[NUM_PACKET_SIZE_BINS];
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};
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#define ATH_NODE_SAMPLE(an) ((struct sample_node *)&an[1])
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#ifndef MIN
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#ifndef MAX
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#endif
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/*
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* Definitions for pulling the rate and trie counts from
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* a 5212 h/w descriptor. These Don't belong here; the
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* driver should record this information so the rate control
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* code doesn't go groveling around in the descriptor bits.
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*/
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#define ds_ctl2 ds_hw[0]
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#define ds_ctl3 ds_hw[1]
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/* TX ds_ctl3 */
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#define AR_XmitDataTries0 0x000f0000 /* series 0 max attempts */
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#define AR_XmitDataTries0_S 16
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#define AR_XmitDataTries1 0x00f00000 /* series 1 max attempts */
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#define AR_XmitDataTries1_S 20
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#define AR_XmitDataTries2 0x0f000000 /* series 2 max attempts */
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#define AR_XmitDataTries2_S 24
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#define AR_XmitDataTries3 0xf0000000 /* series 3 max attempts */
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#define AR_XmitDataTries3_S 28
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/* TX ds_ctl3 */
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#define AR_XmitRate0 0x0000001f /* series 0 tx rate */
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#define AR_XmitRate0_S 0
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#define AR_XmitRate1 0x000003e0 /* series 1 tx rate */
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#define AR_XmitRate1_S 5
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#define AR_XmitRate2 0x00007c00 /* series 2 tx rate */
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#define AR_XmitRate2_S 10
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#define AR_XmitRate3 0x000f8000 /* series 3 tx rate */
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#define AR_XmitRate3_S 15
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#define MS(_v, _f) (((_v) & (_f)) >> _f##_S)
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#endif /* _DEV_ATH_RATE_SAMPLE_H */
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