www.pudn.com > madwifi-0.9.2-src.rar > sample.h
/*-
* 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: sample.h 1667 2006-07-04 10:23:35Z kelmo $
*/
/*
* Defintions 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 */
int last_tx;
};
/*
* for now, we track performance for three different packet
* size buckets
*/
#define NUM_PACKET_SIZE_BINS 3
static int packet_size_bins[NUM_PACKET_SIZE_BINS] = {250, 1600, 3000};
/* 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 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
#define WIFI_CW_MIN 31
#define WIFI_CW_MAX 1023
struct ar5212_desc {
/*
* tx_control_0
*/
u_int32_t frame_len:12;
u_int32_t reserved_12_15:4;
u_int32_t xmit_power:6;
u_int32_t rts_cts_enable:1;
u_int32_t veol:1;
u_int32_t clear_dest_mask:1;
u_int32_t ant_mode_xmit:4;
u_int32_t inter_req:1;
u_int32_t encrypt_key_valid:1;
u_int32_t cts_enable:1;
/*
* tx_control_1
*/
u_int32_t buf_len:12;
u_int32_t more:1;
u_int32_t encrypt_key_index:7;
u_int32_t frame_type:4;
u_int32_t no_ack:1;
u_int32_t comp_proc:2;
u_int32_t comp_iv_len:2;
u_int32_t comp_icv_len:2;
u_int32_t reserved_31:1;
/*
* tx_control_2
*/
u_int32_t rts_duration:15;
u_int32_t duration_update_enable:1;
u_int32_t xmit_tries0:4;
u_int32_t xmit_tries1:4;
u_int32_t xmit_tries2:4;
u_int32_t xmit_tries3:4;
/*
* tx_control_3
*/
u_int32_t xmit_rate0:5;
u_int32_t xmit_rate1:5;
u_int32_t xmit_rate2:5;
u_int32_t xmit_rate3:5;
u_int32_t rts_cts_rate:5;
u_int32_t reserved_25_31:7;
/*
* tx_status_0
*/
u_int32_t frame_xmit_ok:1;
u_int32_t excessive_retries:1;
u_int32_t fifo_underrun:1;
u_int32_t filtered:1;
u_int32_t rts_fail_count:4;
u_int32_t data_fail_count:4;
u_int32_t virt_coll_count:4;
u_int32_t send_timestamp:16;
/*
* tx_status_1
*/
u_int32_t done:1;
u_int32_t seq_num:12;
u_int32_t ack_sig_strength:8;
u_int32_t final_ts_index:2;
u_int32_t comp_success:1;
u_int32_t xmit_antenna:1;
u_int32_t reserved_25_31_x:7;
} __packed;
#endif /* _DEV_ATH_RATE_SAMPLE_H */