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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 */
/** */
/** User Datagram Protocol (UDP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_udp.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_udp_packet_info_extract PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function extracts the source IP, protocol, (the protocol is */
/* always UDP), port number and the incoming interface from the */
/* incoming packet. */
/* */
/* INPUT */
/* */
/* packet_ptr Pointer to UDP packet */
/* ip_address Pointer to sender IP address */
/* protocol Pointer to packet protocol. */
/* Always 17 (UDP) */
/* port Pointer to sender source port */
/* incoming_interface Pointer to interface index */
/* packet received on */
/* */
/* OUTPUT */
/* */
/* NX_SUCCESS Successful completion status */
/* */
/* CALLS */
/* */
/* nxd_udp_packet_info_extract Invoke the NXD version of the */
/* service. */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/**************************************************************************/
UINT _nx_udp_packet_info_extract(NX_PACKET *packet_ptr, ULONG *ip_address,
UINT *protocol, UINT *port, UINT *interface_index)
{
#ifndef NX_DISABLE_IPV4
NXD_ADDRESS nxd_ip_address;
UINT status;
/* Call the NXD version of the service. */
status = _nxd_udp_packet_info_extract(packet_ptr, &nxd_ip_address, protocol, port, interface_index);
if (status == NX_SUCCESS)
{
if (ip_address)
{
/*lint -e{644} suppress variable might not be initialized, since "nxd_ip_address" was initialized in _nxd_udp_packet_info_extract. */
if (nxd_ip_address.nxd_ip_version == NX_IP_VERSION_V4)
{
*ip_address = nxd_ip_address.nxd_ip_address.v4;
}
else
{
return(NX_INVALID_PACKET);
}
}
}
return(status);
#else
NX_PARAMETER_NOT_USED(packet_ptr);
NX_PARAMETER_NOT_USED(ip_address);
NX_PARAMETER_NOT_USED(protocol);
NX_PARAMETER_NOT_USED(port);
NX_PARAMETER_NOT_USED(interface_index);
return(NX_NOT_SUPPORTED);
#endif /* NX_DISABLE_IPV4 */
}
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