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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 version 6 Default Router Table (IPv6 router) */
/** */
/**************************************************************************/
/**************************************************************************/
#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
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nxd_ipv6_default_router_table_init PORTABLE C */
/* 6.1 */
/* AUTHOR */
/* */
/* Yuxin Zhou, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function initializes IPv6 routing table. Note it is up to the */
/* caller to obtain mutex protection before writing to the table. */
/* */
/* INPUT */
/* */
/* ip_ptr Pointer to IP control block */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* nx_ipv6_enable */
/* */
/* 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 _nxd_ipv6_default_router_table_init(NX_IP *ip_ptr)
{
ULONG i;
/* Initialize each entry in the default router table to null. */
for (i = 0; i < NX_IPV6_DEFAULT_ROUTER_TABLE_SIZE; i++)
{
ip_ptr -> nx_ipv6_default_router_table[i].nx_ipv6_default_router_entry_flag = 0;
ip_ptr -> nx_ipv6_default_router_table[i].nx_ipv6_default_router_entry_life_time = 0;
ip_ptr -> nx_ipv6_default_router_table[i].nx_ipv6_default_router_entry_neighbor_cache_ptr = NX_NULL;
}
/* Set the initial size to zero. */
ip_ptr -> nx_ipv6_default_router_table_size = 0;
/* Initialize the index for recruiting less "reachable" routers
when the current router cannot be reached. */
ip_ptr -> nx_ipv6_default_router_table_round_robin_index = 0;
/* Initialize the start of the prefix table (linked list) to NULL. */
ip_ptr -> nx_ipv6_prefix_list_table[0].nx_ipv6_prefix_entry_prev = NX_NULL;
ip_ptr -> nx_ipv6_prefix_list_table[0].nx_ipv6_prefix_entry_next = &ip_ptr -> nx_ipv6_prefix_list_table[1];
/* Link up the entries in the prefix table. */
for (i = 1; i < NX_IPV6_PREFIX_LIST_TABLE_SIZE - 1; i++)
{
ip_ptr -> nx_ipv6_prefix_list_table[i].nx_ipv6_prefix_entry_prev = &ip_ptr -> nx_ipv6_prefix_list_table[i - 1];
ip_ptr -> nx_ipv6_prefix_list_table[i].nx_ipv6_prefix_entry_next = &ip_ptr -> nx_ipv6_prefix_list_table[i + 1];
}
/* Null terminate the end of the prefix table (linked list). */
ip_ptr -> nx_ipv6_prefix_list_table[i].nx_ipv6_prefix_entry_prev = &ip_ptr -> nx_ipv6_prefix_list_table[i - 1];
ip_ptr -> nx_ipv6_prefix_list_table[i].nx_ipv6_prefix_entry_next = NX_NULL;
/* Set the free list pointer to the 1st entry. */
ip_ptr -> nx_ipv6_prefix_entry_free_list = &ip_ptr -> nx_ipv6_prefix_list_table[0];
ip_ptr -> nx_ipv6_prefix_list_ptr = NX_NULL;
/* All done, return. */
}
#endif /* FEATURE_NX_IPV6 */
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