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common/usbx_device_classes/src/ux_device_class_cdc_ecm_control_request.c
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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Device CDC_ECM Class */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_device_class_cdc_ecm.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_device_class_cdc_ecm_control_request PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function manages the based sent by the host on the control */
/* endpoints with a CLASS or VENDOR SPECIFIC type. */
/* */
/* INPUT */
/* */
/* cdc_ecm Pointer to cdc_ecm class */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _ux_utility_short_get Get 16-bit value */
/* */
/* CALLED BY */
/* */
/* CDC_ECM Class */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Chaoqiong Xiao Initial Version 6.0 */
/* 09-30-2020 Chaoqiong Xiao Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
UINT _ux_device_class_cdc_ecm_control_request(UX_SLAVE_CLASS_COMMAND *command)
{
UX_SLAVE_TRANSFER *transfer_request;
UX_SLAVE_DEVICE *device;
ULONG request;
ULONG request_value;
UX_SLAVE_CLASS *class;
UX_SLAVE_CLASS_CDC_ECM *cdc_ecm;
/* Get the pointer to the device. */
device = &_ux_system_slave -> ux_system_slave_device;
/* Get the pointer to the transfer request associated with the control endpoint. */
transfer_request = &device -> ux_slave_device_control_endpoint.ux_slave_endpoint_transfer_request;
/* Extract all necessary fields of the request. */
request = *(transfer_request -> ux_slave_transfer_request_setup + UX_SETUP_REQUEST);
request_value = _ux_utility_short_get(transfer_request -> ux_slave_transfer_request_setup + UX_SETUP_VALUE);
/* Get the class container. */
class = command -> ux_slave_class_command_class_ptr;
/* Get the cdc_ecm instance from this class container. */
cdc_ecm = (UX_SLAVE_CLASS_CDC_ECM *) class -> ux_slave_class_instance;
/* Here we proceed only the standard request we know of at the device level. */
switch (request)
{
case UX_DEVICE_CLASS_CDC_ECM_SET_ETHERNET_MULTICAST_FILTER :
/* Save the multicast filter. */
cdc_ecm -> ux_slave_class_cdc_ecm_ethernet_multicast_filter = request_value;
break ;
case UX_DEVICE_CLASS_CDC_ECM_SET_ETHERNET_POWER_MANAGEMENT_FILTER :
/* Save the power management filter. */
cdc_ecm -> ux_slave_class_cdc_ecm_ethernet_power_management_filter = request_value;
break ;
case UX_DEVICE_CLASS_CDC_ECM_SET_ETHERNET_PACKET_FILTER :
/* Save the packet filter. */
cdc_ecm -> ux_slave_class_cdc_ecm_ethernet_packet_filter = request_value;
break ;
case UX_DEVICE_CLASS_CDC_ECM_GET_ETHERNET_POWER_MANAGEMENT_FILTER :
default:
/* Unknown function. It's not handled. */
return(UX_ERROR);
}
/* It's handled. */
return(UX_SUCCESS);
}