universal_address.h

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/*
 * Copyright (C) 2014  Martin Landsmann <Martin.Landsmann@HAW-Hamburg.de>
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */
 
#pragma once

 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <stdint.h>
#include <stdlib.h>
#include "net/ipv6/addr.h"

/* determine the widest possible address type */
#ifndef UNIVERSAL_ADDRESS_SIZE
#define UNIVERSAL_ADDRESS_SIZE (0)       /* rather senseless default, should
                                            trigger warnings */
#endif
 
/* IPv6 address has 128 bit -> 16 bytes */
#if defined(MODULE_IPV6_ADDR) && ((IPV6_ADDR_BIT_LEN >> 3) > UNIVERSAL_ADDRESS_SIZE)
#undef UNIVERSAL_ADDRESS_SIZE
#define UNIVERSAL_ADDRESS_SIZE (IPV6_ADDR_BIT_LEN >> 3)
#endif

#define UNIVERSAL_ADDRESS_EQUAL (0)

#define UNIVERSAL_ADDRESS_MATCHING_PREFIX (1)

#define UNIVERSAL_ADDRESS_IS_ALL_ZERO_ADDRESS (2)

 */
typedef struct {
    uint8_t use_count;                       
    uint8_t address_size;                    
    uint8_t address[UNIVERSAL_ADDRESS_SIZE]; 
} universal_address_container_t;

void universal_address_init(void);

void universal_address_reset(void);

universal_address_container_t *universal_address_add(uint8_t *addr, size_t addr_size);

void universal_address_rem(universal_address_container_t *entry);

uint8_t* universal_address_get_address(universal_address_container_t *entry,
                                       uint8_t *addr, size_t *addr_size);

int universal_address_compare(universal_address_container_t *entry,
                              uint8_t *addr, size_t *addr_size_in_bits);

int universal_address_compare_prefix(universal_address_container_t *entry,
                            uint8_t *prefix, size_t prefix_size_in_bits);

void universal_address_print_entry(universal_address_container_t *entry);

int universal_address_get_num_used_entries(void);

void universal_address_print_table(void);
 
#ifdef __cplusplus
}
#endif