3293c860ab
use random mac address with fixed OUI provided Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
43 lines
873 B
C
43 lines
873 B
C
/*
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* Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
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*
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* Under GPLv2 only
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*/
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#ifndef __LOCAL_MAC_ADDRESS_H__
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#define __LOCAL_MAC_ADDRESS_H__
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#include <net.h>
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/**
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* local_mac_address_register - use random number with fix
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* OUI provided device to provide an Ethernet address
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* @ethid: ethernet device id
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* @oui: Ethernet OUI (3 bytes)
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*
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* Generate a local Ethernet address (MAC) that is not multicast using a 1-wire id.
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*/
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static inline int local_mac_address_register(int ethid, char * oui)
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{
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char addr[6];
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int nb_oui = 3;
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int i;
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if (!oui)
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return -EINVAL;
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random_ether_addr(addr);
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for (i = 0; i < nb_oui; i++)
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addr[i] = oui[i];
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addr[0] &= 0xfe; /* clear multicast bit */
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addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
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eth_register_ethaddr(ethid, addr);
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return 0;
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}
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#endif /* __LOCAL_MAC_ADDRESS_H__ */
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