diff options
Diffstat (limited to 'board/CZ.NIC/turris_common.c')
| -rw-r--r-- | board/CZ.NIC/turris_common.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/board/CZ.NIC/turris_common.c b/board/CZ.NIC/turris_common.c new file mode 100644 index 00000000000..1717dda82eb --- /dev/null +++ b/board/CZ.NIC/turris_common.c @@ -0,0 +1,42 @@ +// 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); +} |