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