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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Marek Behún <kabel@kernel.org>
*/
#include <env.h>
#include <net.h>
#include "turris_common.h"
static void increment_mac(u8 *mac)
{
int i;
for (i = 5; i >= 3; i--) {
mac[i] += 1;
if (mac[i])
break;
}
}
static void set_mac_if_invalid(int i, u8 *mac)
{
u8 oldmac[6];
if (is_valid_ethaddr(mac) &&
!eth_env_get_enetaddr_by_index("eth", i, oldmac))
eth_env_set_enetaddr_by_index("eth", i, mac);
}
void turris_init_mac_addresses(int first_idx, const u8 *first_mac)
{
u8 mac[6];
memcpy(mac, first_mac, sizeof(mac));
set_mac_if_invalid((first_idx + 0) % 3, mac);
increment_mac(mac);
set_mac_if_invalid((first_idx + 1) % 3, mac);
increment_mac(mac);
set_mac_if_invalid((first_idx + 2) % 3, mac);
}
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