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/***************************************************************************
* 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 */
/** */
/** Internet Protocol (IP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_tcp.h"
#include "nx_arp.h"
#include "nx_icmpv6.h"
#include "nx_link.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_ip_diferred_link_status_process PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function processes link status change event. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* tx_mutex_get Obtain protection mutex */
/* tx_mutex_put Release protection mutex */
/* _nx_tcp_socket_connection_reset Reset TCP connection */
/* _nx_arp_interface_entries_delete Remove specified ARP entries */
/* _nx_nd_cache_interface_entries_delete Delete ND cache entries assoc-*/
/* iated with specified interface*/
/* link_driver_entry Link driver */
/* memset Zero out the interface */
/* */
/* CALLED BY */
/* */
/* nx_ip_thread_entry */
/* */
/**************************************************************************/
VOID _nx_ip_deferred_link_status_process(NX_IP *ip_ptr)
{
UINT i;
NX_IP_DRIVER driver_request;
ULONG link_up;
if (ip_ptr -> nx_ip_link_status_change_callback == NX_NULL)
{
/* Callback function is not set. */
return;
}
for (i = 0; i < NX_MAX_PHYSICAL_INTERFACES; i++)
{
if ((ip_ptr -> nx_ip_interface[i].nx_interface_valid) &&
(ip_ptr -> nx_ip_interface[i].nx_interface_link_status_change))
{
/* Reset the flag. */
ip_ptr -> nx_ip_interface[i].nx_interface_link_status_change = NX_FALSE;
driver_request.nx_ip_driver_ptr = ip_ptr;
driver_request.nx_ip_driver_command = NX_LINK_GET_STATUS;
driver_request.nx_ip_driver_interface = &(ip_ptr -> nx_ip_interface[i]);
driver_request.nx_ip_driver_return_ptr = &link_up;
(ip_ptr -> nx_ip_interface[i].nx_interface_link_driver_entry)(&driver_request);
/* Invoke the callback function. */
/*lint -e{644} suppress variable might not be initialized, since "link_up" was initialized in nx_interface_link_driver_entry. */
ip_ptr -> nx_ip_link_status_change_callback(ip_ptr, i, link_up);
#ifdef NX_ENABLE_VLAN
/* Link status change need to propagate to vlan sub interface */
nx_link_vlan_interface_status_change(ip_ptr, i);
#endif /* NX_ENABLE_VLAN */
}
}
}
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