On Mon, Dec 31, 2007 at 12:39:11PM +0700, Theewara Vorakosit wrote:
> Hello,
>
> I get MAC address from ioctl. However, ifconfig can change this MAC
> address. Can I get a real physical MAC address of the NIC?
yes. It's ETHTOOL_GPERMADDR to the ethtool ioctl.
case ETHTOOL_GPERMADDR:
rc = ethtool_get_perm_addr(dev, useraddr);
break;
When the driver is first loaded, before ifconfig can change the MAC
address, the existing (permanent) MAC address is stored away, able to
be retrieved via this ioctl. Jon Wetzel, a Dell intern of a few
summers ago, wrote the code and was able to have it included.
Thanks,
Matt
--
Matt Domsch
Linux Technology Strategist, Dell Office of the CTO
linux.dell.com & www.dell.com/linux
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