/*
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* Header file for QOS Algorithm on DHD
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*
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* Provides type definitions and function prototypes for the QOS Algorithm
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* Note that this algorithm is a platform independent layer
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*
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* Copyright (C) 2020, Broadcom.
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id$
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*/
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#ifndef _DHD_QOS_ALGO_H_
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#define _DHD_QOS_ALGO_H_
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#define LOWLAT_AVG_PKT_SIZE_LOW 50u
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#define LOWLAT_AVG_PKT_SIZE_HIGH 200u
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#define LOWLAT_NUM_PKTS_LOW 1u
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#define LOWLAT_NUM_PKTS_HIGH 8u
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#define LOWLAT_DETECT_CNT_INC_THRESH 10u
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#define LOWLAT_DETECT_CNT_DEC_THRESH 0u
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#define LOWLAT_DETECT_CNT_UPGRADE_THRESH 4u
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typedef struct qos_stat
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{
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/* Statistics */
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unsigned long tx_pkts_prev;
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unsigned long tx_bytes_prev;
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unsigned long tx_pkts;
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unsigned long tx_bytes;
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/* low latency flow detection algorithm counts */
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unsigned char lowlat_detect_count;
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bool lowlat_flow;
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} qos_stat_t;
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/* QoS alogrithm parameter, controllable at runtime */
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typedef struct _qos_algo_params
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{
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/* The avg Tx packet size in the sampling interval must be between
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* these two thresholds for QoS upgrade to take place.
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* default values = LOWLAT_AVG_PKT_SIZE_LOW, LOWLAT_AVG_PKT_SIZE_HIGH
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*/
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unsigned long avg_pkt_size_low_thresh;
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unsigned long avg_pkt_size_high_thresh;
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/* The number of Tx packets in the sampling interval must be
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* between these two thresholds for QoS upgrade to happen.
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* default values = LOWLAT_NUM_PKTS_LOW, LOWLAT_NUM_PKTS_HIGH
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*/
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unsigned long num_pkts_low_thresh;
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unsigned long num_pkts_high_thresh;
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/* If low latency traffic is detected, then the low latency count
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* is incremented till the first threshold is hit.
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* If traffic ceases to be low latency, then the count is
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* decremented till the second threshold is hit.
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* default values = LOWLAT_DETECT_CNT_INC_THRESH, LOWLAT_DETECT_CNT_DEC_THRESH
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*/
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unsigned char detect_cnt_inc_thresh;
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unsigned char detect_cnt_dec_thresh;
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/* If the low latency count crosses this threshold, the flow will be upgraded.
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* Default value = LOWLAT_DETECT_CNT_UPGRADE_THRESH
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*/
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unsigned char detect_cnt_upgrade_thresh;
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} qos_algo_params_t;
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#define QOS_PARAMS(x) (&x->psk_qos->qos_params);
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/*
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* Operates on a flow and returns 1 for upgrade and 0 for
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* no up-grade
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*/
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int dhd_qos_algo(dhd_info_t *dhd, qos_stat_t *qos, qos_algo_params_t *qos_params);
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int qos_algo_params_init(qos_algo_params_t *qos_params);
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#endif /* _DHD_QOS_ALGO_H_ */
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