From: Matt Domsch <Matt_Domsch@dell.com>
To: Theewara Vorakosit <thvo@hpcnc.cpe.ku.ac.th>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Get physical MAC address
Date: Tue, 1 Jan 2008 22:58:00 -0600 [thread overview]
Message-ID: <20080102045800.GC10762@auslistsprd01.us.dell.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0712311233290.17732-100000@hpcnc.cpe.ku.ac.th>
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
next prev parent reply other threads:[~2008-01-02 4:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-31 5:39 Get physical MAC address Theewara Vorakosit
2008-01-01 23:07 ` Bernd Petrovitsch
2008-01-02 2:12 ` Stephen Hemminger
2008-01-02 2:42 ` Jon Masters
2008-01-02 3:12 ` Kyle Moffett
2008-01-02 4:58 ` Matt Domsch [this message]
2008-01-02 9:31 ` Bernd Petrovitsch
[not found] <9Gmk2-1M1-5@gated-at.bofh.it>
2007-12-31 11:11 ` Bodo Eggert
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