Tim Fletcher wrote:
> I am using a 2.0.34 kernel and I have two ISA 3Com Etherlink III cardsHi Tim,
> installed on the machine. Note that I am using the latest 3c509.c driver
>
> downloaded from Donald Becker's site. (note the one that came originally
>
> with the LINUX distribution RH5.1)
>
> I am trying to utilise the Socket ioctl interface for the particular
> device, in order to retrieve config info and also change the MAC address
>
> of the board at run-time.
> I have no problems retrieving and passing info by using the ifmap
> structure (linux/if.h). However, I do not understand how I can implement
>
> a SIOCSIFADDR in the device layer, in order to change the MAC address of
>
> the board at run-time. Hence, I have a few questions regarding the ifreq
>
> structure in <linux/if.h> and also the do_ioctl function that is
> prototyped in <linux/netdevice.h>:
>
> i) One of the variables in the ifreq structure is ifru_hwaddr. Is this
> the only variable that relates to the MAC address? If not what else
> relates to it?
>
> ii) I think (by looking at the 3c509.c) that I will have to implement a
> private ioctl (SIOCDEVPRIVATE) to modify the MAC address at run time.
> Hence, I am going to have to implement a do_ioctl function inside the
> driver...Can somebody (with good knowledge of the 3Com driver) help me
> implement this? Alternatively, if there is already a device method that
> achieves the change of MAC address at run time, can somebody shout and
> point the method to me?I have some code (not written by me) that changes mac address if you would
like a copy. It came from www.rootshell.com a while (year or so) back.--
Tim Fletcher .~.
/V\ L I N U X
[EMAIL PROTECTED] // \ >Don't fear the penguin<
[EMAIL PROTECTED] /( )\
^^-^^
"Commercial OS vendors are, at the moment, all closed economies, and
doomed to fall in their competition with open economies just as
communism eventually fell."
-- H. Reiser, Unix OS developer
Thanks for the info. I had a look at the website and I found changemac.c (dated 7/9/98). Is this the code you use? If not I would like a copy. If yes, have you added any functionality to it.
I am coding an Ethernet redundancy packet for Linux.. Any exchange of ideas is very welcome.
Thanks again.
George Magklaras ([EMAIL PROTECTED])
http://www.geocities.com/SiliconValley/Bridge/3862
Computer Programmer
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A system is anything with no system to it,
hardware is anything that clatters when you drop it,
and software is anything for which there is a logical
explanation why it's not working.
Johannes Leckebusch
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