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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 */
/* */
/* _nxd_udp_socket_source_send PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function sends UDP packet using specified local interface */
/* IPv4 or IPv6 address as source. */
/* */
/* INPUT */
/* */
/* socket_ptr Pointer to UDP socket */
/* packet_ptr Pointer to UDP packet */
/* ip_address IP address */
/* port 16-bit UDP port number */
/* address_index Index of IPv4 or IPv6 address */
/* to use as the source address*/
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* _nxd_udp_socket_send Send the UDP packet */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/**************************************************************************/
UINT _nxd_udp_socket_source_send(NX_UDP_SOCKET *socket_ptr, NX_PACKET *packet_ptr,
NXD_ADDRESS *ip_address, UINT port, UINT address_index)
{
UINT status;
NX_IP *ip_ptr;
/* Setup the pointer to the associated IP instance. */
ip_ptr = socket_ptr -> nx_udp_socket_ip_ptr;
/* Store address information into the packet structure. */
#ifndef NX_DISABLE_IPV4
if (ip_address -> nxd_ip_version == NX_IP_VERSION_V4)
{
packet_ptr -> nx_packet_address.nx_packet_interface_ptr = &(ip_ptr -> nx_ip_interface[address_index]);
}
#endif /* !NX_DISABLE_IPV4 */
#ifdef FEATURE_NX_IPV6
if (ip_address -> nxd_ip_version == NX_IP_VERSION_V6)
{
packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr = &ip_ptr -> nx_ipv6_address[address_index];
if (packet_ptr -> nx_packet_address.nx_packet_ipv6_address_ptr -> nxd_ipv6_address_state != NX_IPV6_ADDR_STATE_VALID)
{
return(NX_NO_INTERFACE_ADDRESS);
}
}
#endif /* FEATURE_NX_IPV6 */
/* Call udp_socket_send service */
status = _nxd_udp_socket_send(socket_ptr, packet_ptr, ip_address, port);
return(status);
}
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