l2util.h

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/*
 * Copyright (C) 2018 Freie Universität Berlin
 *
 * 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

 
#include <stdint.h>
 
#include "compiler_hints.h"
#include "net/eui64.h"
#include "net/ndp.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define L2UTIL_ADDR_MAX_LEN (8U)    

int l2util_eui64_from_addr(int dev_type, const uint8_t *addr, size_t addr_len,
                           eui64_t *eui64);

int l2util_ipv6_iid_from_addr(int dev_type,
                              const uint8_t *addr, size_t addr_len,
                              eui64_t *iid);

int l2util_ipv6_iid_to_addr(int dev_type, const eui64_t *iid, uint8_t *addr);

int l2util_ndp_addr_len_from_l2ao(int dev_type,
                                  const ndp_opt_t *opt);

int l2util_ipv6_group_to_l2_group(int dev_type,
                                  const ipv6_addr_t *ipv6_group,
                                  uint8_t *l2_group);

char *l2util_addr_to_str(const uint8_t *addr, size_t addr_len, char *out);

ACCESS(write_only, 2, 3)
size_t l2util_addr_from_str_sized(const char *str, void *addr, size_t addr_size);

size_t l2util_addr_from_str(const char *str, uint8_t out[L2UTIL_ADDR_MAX_LEN]);

static inline bool l2util_addr_equal(const uint8_t *addr_a, uint8_t addr_a_len,
                                     const uint8_t *addr_b, uint8_t addr_b_len)
{
    if (addr_a_len != addr_b_len) {
        return false;
    }
 
    return memcmp(addr_a, addr_b, addr_a_len) == 0;
}
 
#ifdef __cplusplus
}
#endif