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common/src/nxd_ipv6_stateless_address_autoconfig_disable.c
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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 Protocol (IP) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_ipv6.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxd_ipv6_stateless_address_autoconfig_disable PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function disables the IPv6 stateless address auto */
/* configuration feature if the address has not been configured yet. */
/* */
/* */
/* INPUT */
/* */
/* ip_ptr IP instance pointer */
/* interface_index The interface to operate on */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* tx_mutex_get Obtain a protection mutex */
/* tx_mutex_put Release protection mutex */
/* */
/* CALLED BY */
/* */
/* Application Code */
/* */
/* 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 */
/* */
/**************************************************************************/
UINT _nxd_ipv6_stateless_address_autoconfig_disable(NX_IP *ip_ptr, UINT interface_index)
{
#if defined(FEATURE_NX_IPV6) && defined(NX_IPV6_STATELESS_AUTOCONFIG_CONTROL)
NX_INTERFACE *interface_ptr;
/* Set interface_ptr. */
interface_ptr = &ip_ptr -> nx_ip_interface[interface_index];
/* Make sure IPv6 is not already enabled. */
if (interface_ptr -> nx_ipv6_stateless_address_autoconfig_status == NX_STATELESS_ADDRESS_AUTOCONFIG_DISABLED)
{
return(NX_SUCCESS);
}
/* If trace is enabled, insert this event into the trace buffer. */
NX_TRACE_IN_LINE_INSERT(NXD_TRACE_IPV6_STATELESS_ADDRESS_AUTOCONFIG_DISABLE, ip_ptr, interface_ptr, 0, 0, NX_TRACE_IP_EVENTS, 0, 0);
/* Obtain the IP mutex so we can manipulate the internal routing table. */
tx_mutex_get(&(ip_ptr -> nx_ip_protection), TX_WAIT_FOREVER);
/* Install IPv6 packet receive processing function pointer */
interface_ptr -> nx_ipv6_stateless_address_autoconfig_status = NX_STATELESS_ADDRESS_AUTOCONFIG_DISABLED;
/* Reset the RS count. */
interface_ptr -> nx_ipv6_rtr_solicitation_count = 0;
/* Release the IP protection. */
tx_mutex_put(&(ip_ptr -> nx_ip_protection));
/* Return successful completion. */
return(NX_SUCCESS);
#else
NX_PARAMETER_NOT_USED(ip_ptr);
NX_PARAMETER_NOT_USED(interface_index);
return(NX_NOT_SUPPORTED);
#endif /* FEATURE_NX_IPV6 && NX_IPV6_STATELESS_AUTOCONFIG_CONTROL */
}