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