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/**************************************************************************/
/* */
/* Copyright (c) Microsoft Corporation. All rights reserved. */
/* */
/* This software is licensed under the Microsoft Software License */
/* Terms for Microsoft Azure RTOS. Full text of the license can be */
/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
/* and in the root directory of this software. */
/* */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Internet Control Message Protocol (ICMP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_ipv6.h"
#include "nx_icmpv6.h"
#ifdef NX_IPSEC_ENABLE
#include "nx_ipsec.h"
#endif /* NX_IPSEC_ENABLE */
#ifdef FEATURE_NX_IPV6
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_icmpv6_DAD_failure PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function is called when the DAD process determines that a */
/* duplicate address is present on the local network. The interface */
/* is set to an invalid state. */
/* */
/* INPUT */
/* */
/* ip_ptr IP stack instance */
/* ipv6_address The local IPv6 interface */
/* that detects the failure. */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* [ipv6_address_change_notify] User callback function */
/* */
/* CALLED BY */
/* */
/* _nx_icmpv6_process_na */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 05-19-2020 Yuxin Zhou Initial Version 6.0 */
/* 09-30-2020 Yuxin Zhou Modified comment(s), */
/* resulting in version 6.1 */
/* */
/**************************************************************************/
#ifndef NX_DISABLE_IPV6_DAD
VOID _nx_icmpv6_DAD_failure(NX_IP *ip_ptr, NXD_IPV6_ADDRESS *ipv6_address)
{
#ifdef NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY
UINT interface_index;
UINT ipv6_addr_index;
#endif /* NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY */
NXD_IPV6_ADDRESS *address_ptr;
/* Set the interface to an invalid state. */
ipv6_address -> nxd_ipv6_address_state = NX_IPV6_ADDR_STATE_UNKNOWN;
ipv6_address -> nxd_ipv6_address_valid = NX_FALSE;
/* Indicate the DAD process is disabled. */
ipv6_address -> nxd_ipv6_address_DupAddrDetectTransmit = 0;
#ifdef NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY
if (ip_ptr -> nx_ipv6_address_change_notify)
{
ipv6_addr_index = (ULONG)ipv6_address -> nxd_ipv6_address_index;
interface_index = (ULONG)ipv6_address -> nxd_ipv6_address_attached -> nx_interface_index;
ip_ptr -> nx_ipv6_address_change_notify(ip_ptr, NX_IPV6_ADDRESS_DAD_FAILURE, interface_index, ipv6_addr_index, &ipv6_address -> nxd_ipv6_address[0]);
}
#else
NX_PARAMETER_NOT_USED(ip_ptr);
#endif /* NX_ENABLE_IPV6_ADDRESS_CHANGE_NOTIFY */
/* Remove address from interface. */
if (ipv6_address == ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head)
{
ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head = ipv6_address -> nxd_ipv6_address_next;
}
else
{
for (address_ptr = ipv6_address -> nxd_ipv6_address_attached -> nxd_interface_ipv6_address_list_head;
address_ptr != NX_NULL;
address_ptr = address_ptr -> nxd_ipv6_address_next)
{
if (address_ptr -> nxd_ipv6_address_next == ipv6_address)
{
address_ptr -> nxd_ipv6_address_next = ipv6_address -> nxd_ipv6_address_next;
}
}
}
}
#endif /* NX_DISABLE_IPV6_DAD */
#endif /* FEATURE_NX_IPV6 */
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