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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. */
/* */
/**************************************************************************/
#define NX_SOURCE_CODE
/* Include necessary system files. */
#include "nx_api.h"
#include "nx_ipv6.h"
#include "nx_nd_cache.h"
#ifdef FEATURE_NX_IPV6
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Component */
/** */
/** Internet Protocol version 6 Prefix Table (IPv6 prefix table) */
/** */
/**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_ipv6_prefix_list_delete PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This internal function deletes an entry from the prefix list based */
/* on the given prefix. */
/* */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* prefix 128-bit IPv6 prefix. */
/* prefix_length Length of the prefix. */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* _nx_ipv6_prefix_list_delete_entry Delete IPv6 prefix entry */
/* */
/* CALLED BY */
/* */
/* _nx_icmpv6_process_ra ICMPv6 Router Advertisement */
/* process routine. */
/* */
/* NOTE */
/* */
/* This function cannot be called from ISR. */
/* */
/* 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 */
/* */
/**************************************************************************/
VOID _nx_ipv6_prefix_list_delete(NX_IP *ip_ptr, ULONG *prefix, INT prefix_length)
{
NX_IPV6_PREFIX_ENTRY *current;
/* Quick reference to the head of the prefix list. */
current = ip_ptr -> nx_ipv6_prefix_list_ptr;
/* Go through all the entries. */
while (current)
{
/* If prefix length matches, and the prefix addresses also match...*/
if ((current -> nx_ipv6_prefix_entry_prefix_length == (ULONG)prefix_length) &&
CHECK_IPV6_ADDRESSES_SAME(prefix, current -> nx_ipv6_prefix_entry_network_address))
{
/* Delete this entry. */
_nx_ipv6_prefix_list_delete_entry(ip_ptr, current);
/* All done. return */
return;
}
/* Move to the next entry. */
current = current -> nx_ipv6_prefix_entry_next;
}
/* No match was found. */
return;
}
#endif /* FEATURE_NX_IPV6 */
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