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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_ip.h"
#include "nx_ipv6.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxd_ipv6_address_get PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function retrieves the IP address at the specified address list */
/* index of the physical host interface specified by the interface index.*/
/* Returns an IPv6 address and prefix length into the specified pointers.*/
/* */
/* INPUT */
/* */
/* ip_ptr IP control block pointer */
/* address_index Index to the IPv6 address */
/* table */
/* ip_address Pointer to IP address */
/* structure to be filled */
/* prefix_length Pointer to prefix length */
/* to return */
/* interface_index The index to the physical */
/* interface this address */
/* belongs to */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* tx_mutex_get Get protection mutex */
/* tx_mutex_put Put protection mutex */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* NOTE */
/* Application needs to fill in the ip_address.nxd_ip_version field. */
/* */
/**************************************************************************/
UINT _nxd_ipv6_address_get(NX_IP *ip_ptr, UINT address_index, NXD_ADDRESS *ip_address,
ULONG *prefix_length, UINT *interface_index)
{
#ifdef FEATURE_NX_IPV6
TX_INTERRUPT_SAVE_AREA
UINT status;
NXD_IPV6_ADDRESS *interface_ipv6_address_next;
#ifdef TX_ENABLE_EVENT_TRACE
ULONG ip_address_lsw;
#endif /* TX_ENABLE_EVENT_TRACE */
status = NX_SUCCESS;
/* Get mutex protection. */
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
/* Disable interrupts. */
TX_DISABLE
/* Get the ip address. */
interface_ipv6_address_next = &ip_ptr -> nx_ipv6_address[address_index];
/* Check if this is a valid IP address. */
if (interface_ipv6_address_next -> nxd_ipv6_address_state != NX_IPV6_ADDR_STATE_VALID)
{
/* No, the address is not validated yet. */
/* Zero out the return values. */
*prefix_length = 0;
SET_UNSPECIFIED_ADDRESS(ip_address -> nxd_ip_address.v6);
/* Return the error status. */
status = NX_NO_INTERFACE_ADDRESS;
}
else
{
/* Record the interface index. */
*interface_index = (UINT)ip_ptr -> nx_ipv6_address[address_index].nxd_ipv6_address_attached -> nx_interface_index;
/* We have a valid address. Mark with the IPv6 stamp. */
ip_address -> nxd_ip_version = NX_IP_VERSION_V6;
/* Copy interface IP address from the address entry in the IP address table into the return address structure. */
COPY_IPV6_ADDRESS(interface_ipv6_address_next -> nxd_ipv6_address,
ip_address -> nxd_ip_address.v6);
/* Copy interface IP address prefix length from the address entry in the IP address table into the return prefix length. */
*prefix_length = interface_ipv6_address_next -> nxd_ipv6_address_prefix_length;
}
/* Restore interrupts. */
TX_RESTORE
/* Release mutex protection. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
#ifdef TX_ENABLE_EVENT_TRACE
ip_address_lsw = ip_address -> nxd_ip_address.v6[3];
/* If trace is enabled, insert this info into the trace buffer. */
NX_TRACE_IN_LINE_INSERT(NXD_TRACE_IPV6_INTERFACE_ADDRESS_GET, ip_ptr, ip_address_lsw, *prefix_length, address_index, NX_TRACE_IP_EVENTS, 0, 0);
#endif /* TX_ENABLE_EVENT_TRACE */
/* Return completion status. */
return(status);
#else /* !FEATURE_NX_IPV6 */
NX_PARAMETER_NOT_USED(ip_ptr);
NX_PARAMETER_NOT_USED(address_index);
NX_PARAMETER_NOT_USED(ip_address);
NX_PARAMETER_NOT_USED(prefix_length);
NX_PARAMETER_NOT_USED(interface_index);
return(NX_NOT_SUPPORTED);
#endif /* FEATURE_NX_IPV6 */
}
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