Zephyr API Documentation 3.7.99
A Scalable Open Source RTOS
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net_linkaddr.h
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1/*
2 * Copyright (c) 2016 Intel Corporation.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
12#ifndef ZEPHYR_INCLUDE_NET_NET_LINKADDR_H_
13#define ZEPHYR_INCLUDE_NET_NET_LINKADDR_H_
14
15#include <zephyr/types.h>
16#include <stdbool.h>
17#include <errno.h>
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
33#ifdef CONFIG_NET_L2_IEEE802154
34#define NET_LINK_ADDR_MAX_LENGTH 8
35#else
36#ifdef CONFIG_NET_L2_PPP
37#define NET_LINK_ADDR_MAX_LENGTH 8
38#else
39#define NET_LINK_ADDR_MAX_LENGTH 6
40#endif
41#endif
42
63
71 uint8_t *addr; /* in big endian */
72
75
78};
79
100
109static inline bool net_linkaddr_cmp(struct net_linkaddr *lladdr1,
110 struct net_linkaddr *lladdr2)
111{
112 if (!lladdr1 || !lladdr2) {
113 return false;
114 }
115
116 if (lladdr1->len != lladdr2->len) {
117 return false;
118 }
119
120 return !memcmp(lladdr1->addr, lladdr2->addr, lladdr1->len);
121}
122
132static inline int net_linkaddr_set(struct net_linkaddr_storage *lladdr_store,
133 uint8_t *new_addr, uint8_t new_len)
134{
135 if (!lladdr_store || !new_addr) {
136 return -EINVAL;
137 }
138
139 if (new_len > NET_LINK_ADDR_MAX_LENGTH) {
140 return -EMSGSIZE;
141 }
142
143 lladdr_store->len = new_len;
144 memcpy(lladdr_store->addr, new_addr, new_len);
145
146 return 0;
147}
148
153#ifdef __cplusplus
154}
155#endif
156
157#endif /* ZEPHYR_INCLUDE_NET_NET_LINKADDR_H_ */
System error numbers.
net_link_type
Type of the link address.
Definition net_linkaddr.h:49
static bool net_linkaddr_cmp(struct net_linkaddr *lladdr1, struct net_linkaddr *lladdr2)
Compare two link layer addresses.
Definition net_linkaddr.h:109
#define NET_LINK_ADDR_MAX_LENGTH
Maximum length of the link address.
Definition net_linkaddr.h:39
static int net_linkaddr_set(struct net_linkaddr_storage *lladdr_store, uint8_t *new_addr, uint8_t new_len)
Set the member data of a link layer address storage structure.
Definition net_linkaddr.h:132
@ NET_LINK_UNKNOWN
Unknown link address type.
Definition net_linkaddr.h:51
@ NET_LINK_IEEE802154
IEEE 802.15.4 link address.
Definition net_linkaddr.h:53
@ NET_LINK_DUMMY
Dummy link address.
Definition net_linkaddr.h:59
@ NET_LINK_ETHERNET
Ethernet link address.
Definition net_linkaddr.h:57
@ NET_LINK_CANBUS_RAW
CANBUS link address.
Definition net_linkaddr.h:61
@ NET_LINK_BLUETOOTH
Bluetooth IPSP link address.
Definition net_linkaddr.h:55
#define EINVAL
Invalid argument.
Definition errno.h:60
#define EMSGSIZE
Message size.
Definition errno.h:106
__UINT8_TYPE__ uint8_t
Definition stdint.h:88
int memcmp(const void *m1, const void *m2, size_t n)
void * memcpy(void *ZRESTRICT d, const void *ZRESTRICT s, size_t n)
Hardware link address structure.
Definition net_linkaddr.h:90
uint8_t type
What kind of address is this for.
Definition net_linkaddr.h:92
uint8_t len
The real length of the ll address.
Definition net_linkaddr.h:95
uint8_t addr[6]
The array of bytes representing the address.
Definition net_linkaddr.h:98
Hardware link address structure.
Definition net_linkaddr.h:69
uint8_t * addr
The array of byte representing the address.
Definition net_linkaddr.h:71
uint8_t type
What kind of address is this for.
Definition net_linkaddr.h:77
uint8_t len
Length of that address array.
Definition net_linkaddr.h:74