madwifi/ath_rate/sample/sample.h

150 lines
4.9 KiB
C

/*-
* Copyright (c) 2005 John Bicket
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*
* $Id$
*/
/*
* Definitions for the Atheros Wireless LAN controller driver.
*/
#ifndef _DEV_ATH_RATE_SAMPLE_H
#define _DEV_ATH_RATE_SAMPLE_H
/* per-device state */
struct sample_softc {
struct ath_ratectrl arc; /* base state */
int ath_smoothing_rate; /* ewma percentage (out of 100) */
int ath_sample_rate; /* send a different bit-rate 1/X packets */
};
#define ATH_SOFTC_SAMPLE(sc) ((struct sample_softc *)sc->sc_rc)
struct rate_info {
int rate;
int rix;
int rateCode;
int shortPreambleRateCode;
};
struct rate_stats {
unsigned average_tx_time;
int successive_failures;
int tries;
int total_packets;
int packets_acked;
unsigned perfect_tx_time; /* transmit time for 0 retries */
unsigned long last_tx;
};
/*
* for now, we track performance for three different packet
* size buckets
*/
#define NUM_PACKET_SIZE_BINS 3
/* per-node state */
struct sample_node {
int static_rate_ndx;
int num_rates;
struct rate_info rates[IEEE80211_RATE_MAXSIZE];
struct rate_stats stats[NUM_PACKET_SIZE_BINS][IEEE80211_RATE_MAXSIZE];
int last_sample_ndx[NUM_PACKET_SIZE_BINS];
int current_sample_ndx[NUM_PACKET_SIZE_BINS];
int packets_sent[NUM_PACKET_SIZE_BINS];
int current_rate[NUM_PACKET_SIZE_BINS];
int packets_since_switch[NUM_PACKET_SIZE_BINS];
unsigned long jiffies_since_switch[NUM_PACKET_SIZE_BINS];
int packets_since_sample[NUM_PACKET_SIZE_BINS];
unsigned sample_tt[NUM_PACKET_SIZE_BINS];
};
#define ATH_NODE_SAMPLE(an) ((struct sample_node *)&an[1])
#ifndef MIN
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
/*
* Definitions for pulling the rate and trie counts from
* a 5212 h/w descriptor. These Don't belong here; the
* driver should record this information so the rate control
* code doesn't go groveling around in the descriptor bits.
*/
#define ds_ctl2 ds_hw[0]
#define ds_ctl3 ds_hw[1]
/* TX ds_ctl3 */
#define AR_XmitDataTries0 0x000f0000 /* series 0 max attempts */
#define AR_XmitDataTries0_S 16
#define AR_XmitDataTries1 0x00f00000 /* series 1 max attempts */
#define AR_XmitDataTries1_S 20
#define AR_XmitDataTries2 0x0f000000 /* series 2 max attempts */
#define AR_XmitDataTries2_S 24
#define AR_XmitDataTries3 0xf0000000 /* series 3 max attempts */
#define AR_XmitDataTries3_S 28
/* TX ds_ctl3 */
#define AR_XmitRate0 0x0000001f /* series 0 tx rate */
#define AR_XmitRate0_S 0
#define AR_XmitRate1 0x000003e0 /* series 1 tx rate */
#define AR_XmitRate1_S 5
#define AR_XmitRate2 0x00007c00 /* series 2 tx rate */
#define AR_XmitRate2_S 10
#define AR_XmitRate3 0x000f8000 /* series 3 tx rate */
#define AR_XmitRate3_S 15
/* TX ds_ctl3 for 5416 */
#define AR5416_XmitRate0 0x000000ff /* series 0 tx rate */
#define AR5416_XmitRate0_S 0
#define AR5416_XmitRate1 0x0000ff00 /* series 1 tx rate */
#define AR5416_XmitRate1_S 8
#define AR5416_XmitRate2 0x00ff0000 /* series 2 tx rate */
#define AR5416_XmitRate2_S 16
#define AR5416_XmitRate3 0xff000000 /* series 3 tx rate */
#define AR5416_XmitRate3_S 24
#define MS(_v, _f) (((_v) & (_f)) >> _f##_S)
#endif /* _DEV_ATH_RATE_SAMPLE_H */