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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 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 FEATURE_NX_IPV6
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_invalidate_destination_entry PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function invalidates all destination entries whose next hop */
/* address matches the supplied IP address regardless of the */
/* destination address. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP */
/* next_hop_ip The next hop address to find */
/* */
/* OUTPUT */
/* */
/* NONE */
/* */
/* CALLS */
/* */
/* */
/* CALLED BY */
/* */
/* _nd_cache_delete Delete a neighbor cache. */
/* */
/**************************************************************************/
VOID _nx_invalidate_destination_entry(NX_IP *ip_ptr, ULONG *next_hop_ip)
{
UINT i, table_size;
/* Set a local variable for convenience. */
table_size = ip_ptr -> nx_ipv6_destination_table_size;
/* Check if there have been any destinations in the table. */
if (table_size == 0)
{
return;
}
/* Loop through the whole table to match the IP address. */
for (i = 0; table_size && (i < NX_IPV6_DESTINATION_TABLE_SIZE); i++)
{
/* Skip over empty slots. */
if (!ip_ptr -> nx_ipv6_destination_table[i].nx_ipv6_destination_entry_valid)
{
continue;
}
/* Keep track of valid entries we have checked. */
table_size--;
/* Match the supplied next hop with the table entry next hop. */
if (CHECK_IPV6_ADDRESSES_SAME(ip_ptr -> nx_ipv6_destination_table[i].nx_ipv6_destination_entry_next_hop, next_hop_ip))
{
/* A matching entry is found. Mark the entry as invalid. */
ip_ptr -> nx_ipv6_destination_table[i].nx_ipv6_destination_entry_valid = 0;
/* Decrease the count of available destinations. */
ip_ptr -> nx_ipv6_destination_table_size--;
}
}
return;
}
#endif /* FEATURE_NX_IPV6 */
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