universal_address.h

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/*
 * SPDX-FileCopyrightText: 2014 Martin Landsmann <Martin.Landsmann@HAW-Hamburg.de>
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#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