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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 */
/** */
/** Neighbor Discovery Cache */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_nd_cache.h"
#ifdef FEATURE_NX_IPV6
#include "nx_ip.h"
#include "nx_ipv6.h"
/* Bring in externs for caller checking code. */
NX_CALLER_CHECKING_EXTERNS
#endif /* FEATURE_NX_IPV6 */
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxde_nd_cache_hardware_address_find PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function performs error checking on the service for finding a */
/* neighbor discovery (ND) cache entry service. */
/* */
/* INPUT */
/* */
/* ip_ptr IP instance pointer */
/* ip_address Pointer to the IP address to */
/* search for */
/* physical_msw Physical address, most */
/* signifcant word */
/* physical_lsw Physical address, least */
/* signifcant word */
/* interface_index Pointer to interface through */
/* which the neighbor can be */
/* reached. */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _nxd_nd_cache_hardware_address_find Find entry by IP address */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/**************************************************************************/
UINT _nxde_nd_cache_hardware_address_find(NX_IP *ip_ptr,
NXD_ADDRESS *ip_address,
ULONG *physical_msw,
ULONG *physical_lsw,
UINT *interface_index)
{
#ifdef FEATURE_NX_IPV6
/* Check for invalid input pointers. */
if ((ip_ptr == NX_NULL) || (ip_ptr -> nx_ip_id != NX_IP_ID))
{
return(NX_PTR_ERROR);
}
/* Check for invalid IP and MAC address input*/
if ((ip_address == NX_NULL) || (physical_msw == NX_NULL) || (physical_lsw == NX_NULL))
{
return(NX_PTR_ERROR);
}
/* Check the address is an IPv6 address. */
if (ip_address -> nxd_ip_version != NX_IP_VERSION_V6)
{
return(NX_INVALID_PARAMETERS);
}
if (interface_index == NX_NULL)
{
return(NX_PTR_ERROR);
}
/* Check for appropriate caller. */
NX_THREADS_ONLY_CALLER_CHECKING
/* Call the actual service and return completion status. */
return(_nxd_nd_cache_hardware_address_find(ip_ptr, ip_address, physical_msw, physical_lsw, interface_index));
#else /* !FEATURE_NX_IPV6 */
NX_PARAMETER_NOT_USED(ip_ptr);
NX_PARAMETER_NOT_USED(ip_address);
NX_PARAMETER_NOT_USED(physical_msw);
NX_PARAMETER_NOT_USED(physical_lsw);
NX_PARAMETER_NOT_USED(interface_index);
return(NX_NOT_SUPPORTED);
#endif /* FEATURE_NX_IPV6 */
}
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