l2util.h
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1 /*
2  * Copyright (C) 2018 Freie Universit├Ąt Berlin
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
25 #ifndef NET_L2UTIL_H
26 #define NET_L2UTIL_H
27 
28 #include <stdint.h>
29 
30 #include "net/eui64.h"
31 #include "net/ndp.h"
32 
33 #ifdef __cplusplus
34 extern "C" {
35 #endif
36 
37 #define L2UTIL_ADDR_MAX_LEN (8U)
57 int l2util_eui64_from_addr(int dev_type, const uint8_t *addr, size_t addr_len,
58  eui64_t *eui64);
59 
78 int l2util_ipv6_iid_from_addr(int dev_type,
79  const uint8_t *addr, size_t addr_len,
80  eui64_t *iid);
81 
106 int l2util_ipv6_iid_to_addr(int dev_type, const eui64_t *iid, uint8_t *addr);
107 
134  const ndp_opt_t *opt);
135 
152  const ipv6_addr_t *ipv6_group,
153  uint8_t *l2_group);
154 
171 char *l2util_addr_to_str(const uint8_t *addr, size_t addr_len, char *out);
172 
191 size_t l2util_addr_from_str(const char *str, uint8_t *out);
192 
203 static inline bool l2util_addr_equal(const uint8_t *addr_a, uint8_t addr_a_len,
204  const uint8_t *addr_b, uint8_t addr_b_len)
205 {
206  if (addr_a_len != addr_b_len) {
207  return false;
208  }
209 
210  return memcmp(addr_a, addr_b, addr_a_len) == 0;
211 }
212 
213 #ifdef __cplusplus
214 }
215 #endif
216 
217 #endif /* NET_L2UTIL_H */
EUI-64 data type definition.
int l2util_eui64_from_addr(int dev_type, const uint8_t *addr, size_t addr_len, eui64_t *eui64)
Converts a given hardware address to an EUI-64.
int l2util_ndp_addr_len_from_l2ao(int dev_type, const ndp_opt_t *opt)
Derives the length of the link-layer address in an NDP link-layer address option from that option's l...
int l2util_ipv6_iid_from_addr(int dev_type, const uint8_t *addr, size_t addr_len, eui64_t *iid)
Converts a given hardware address to an IPv6 IID.
char * l2util_addr_to_str(const uint8_t *addr, size_t addr_len, char *out)
Converts a hardware address to a human readable string.
size_t l2util_addr_from_str(const char *str, uint8_t *out)
Parses a string of colon-separated hexadecimals to a hardware address.
int l2util_ipv6_iid_to_addr(int dev_type, const eui64_t *iid, uint8_t *addr)
Converts an IPv6 IID to a hardware address.
int l2util_ipv6_group_to_l2_group(int dev_type, const ipv6_addr_t *ipv6_group, uint8_t *l2_group)
Converts an IPv6 multicast address to a multicast address of the respective link layer.
static bool l2util_addr_equal(const uint8_t *addr_a, uint8_t addr_a_len, const uint8_t *addr_b, uint8_t addr_b_len)
Checks if two l2 addresses are equal.
Definition: l2util.h:203
IPv6 neighbor discovery message type definitions.
General NDP option format.
Definition: ndp.h:298
Data type to represent an EUI-64.
Definition: eui64.h:55
Data type to represent an IPv6 address.
Definition: addr.h:72