net_linkaddr.h

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/*
 * Copyright (c) 2016 Intel Corporation.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_NET_NET_LINKADDR_H_
#define ZEPHYR_INCLUDE_NET_NET_LINKADDR_H_
 
#include <zephyr/types.h>
#include <stdbool.h>
#include <errno.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
#ifdef CONFIG_NET_L2_IEEE802154
#define NET_LINK_ADDR_MAX_LENGTH 8
#else
#ifdef CONFIG_NET_L2_PPP
#define NET_LINK_ADDR_MAX_LENGTH 8
#else
#define NET_LINK_ADDR_MAX_LENGTH 6
#endif
#endif
 
enum net_link_type {
        NET_LINK_UNKNOWN = 0,
        NET_LINK_IEEE802154,
        NET_LINK_BLUETOOTH,
        NET_LINK_ETHERNET,
        NET_LINK_DUMMY,
        NET_LINK_CANBUS_RAW,
} __packed;
 
struct net_linkaddr {
        uint8_t *addr; /* in big endian */
 
        uint8_t len;
 
        uint8_t type;
};
 
struct net_linkaddr_storage {
        uint8_t type;
 
        uint8_t len;
 
        uint8_t addr[NET_LINK_ADDR_MAX_LENGTH]; /* in big endian */
};
 
static inline bool net_linkaddr_cmp(struct net_linkaddr *lladdr1,
                                    struct net_linkaddr *lladdr2)
{
        if (!lladdr1 || !lladdr2) {
                return false;
        }
 
        if (lladdr1->len != lladdr2->len) {
                return false;
        }
 
        return !memcmp(lladdr1->addr, lladdr2->addr, lladdr1->len);
}
 
static inline int net_linkaddr_set(struct net_linkaddr_storage *lladdr_store,
                                   uint8_t *new_addr, uint8_t new_len)
{
        if (!lladdr_store || !new_addr) {
                return -EINVAL;
        }
 
        if (new_len > NET_LINK_ADDR_MAX_LENGTH) {
                return -EMSGSIZE;
        }
 
        lladdr_store->len = new_len;
        memcpy(lladdr_store->addr, new_addr, new_len);
 
        return 0;
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_NET_NET_LINKADDR_H_ */