introduce helper to generate mac address with OUI
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>
This commit is contained in:
parent
189678dc67
commit
3293c860ab
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
|
||||
*
|
||||
* Under GPLv2 only
|
||||
*/
|
||||
|
||||
#ifndef __LOCAL_MAC_ADDRESS_H__
|
||||
#define __LOCAL_MAC_ADDRESS_H__
|
||||
|
||||
#include <net.h>
|
||||
|
||||
/**
|
||||
* local_mac_address_register - use random number with fix
|
||||
* OUI provided device to provide an Ethernet address
|
||||
* @ethid: ethernet device id
|
||||
* @oui: Ethernet OUI (3 bytes)
|
||||
*
|
||||
* Generate a local Ethernet address (MAC) that is not multicast using a 1-wire id.
|
||||
*/
|
||||
static inline int local_mac_address_register(int ethid, char * oui)
|
||||
{
|
||||
char addr[6];
|
||||
int nb_oui = 3;
|
||||
int i;
|
||||
|
||||
if (!oui)
|
||||
return -EINVAL;
|
||||
|
||||
random_ether_addr(addr);
|
||||
|
||||
for (i = 0; i < nb_oui; i++)
|
||||
addr[i] = oui[i];
|
||||
|
||||
addr[0] &= 0xfe; /* clear multicast bit */
|
||||
addr[0] |= 0x02; /* set local assignment bit (IEEE802) */
|
||||
|
||||
eth_register_ethaddr(ethid, addr);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif /* __LOCAL_MAC_ADDRESS_H__ */
|
Loading…
Reference in New Issue