/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2025-present Eclipse ThreadX Contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** NetX Component                                                        */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/

#define NX_SOURCE_CODE


/* Include necessary system files.  */

#include "nx_api.h"
#include "nx_ip.h"


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _nx_ip_driver_link_status_event                     PORTABLE C      */
/*                                                           6.4.3        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Yuxin Zhou, Microsoft Corporation                                   */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function deferrs link status event from ISR to the IP helper   */
/*    thread.                                                             */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    ip_ptr                                Pointer to IP control block   */
/*    interface_index                       Index of interface            */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    None                                                                */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    tx_event_flags_set                    Wakeup IP helper thread       */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Application I/O Driver                                              */
/*                                                                        */
/**************************************************************************/
VOID  _nx_ip_driver_link_status_event(NX_IP *ip_ptr, UINT interface_index)
{
TX_INTERRUPT_SAVE_AREA

    /* Disable interrupts.  */
    TX_DISABLE

    /* Mark link status changed. */
    ip_ptr -> nx_ip_interface[interface_index].nx_interface_link_status_change = NX_TRUE;

    /* Wakeup IP helper thread to process the link status event.  */
    tx_event_flags_set(&(ip_ptr -> nx_ip_events), NX_IP_LINK_STATUS_EVENT, TX_OR);

    /* Restore interrupts.  */
    TX_RESTORE
}