Date: Mon, 25 Feb 2002 13:05:32 -0600 (CST) From: mark tinguely <tinguely@web.cs.ndsu.nodak.edu> To: anuranjan@yahoo.com, questions@FreeBSD.ORG Subject: Re: IOCTL problem in a n/w driver Message-ID: <200202251905.g1PJ5WM78832@web.cs.ndsu.nodak.edu> In-Reply-To: <20020222221211.24724.qmail@web12501.mail.yahoo.com>
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> In this I can set the LLADDR and MTU and can read the
> correct MTU using the "ifconfig" command. But
> interesting this is that In the output of the ifconfig
> I see:
>
> xx0: ...... MTU 1500
> ether 00:00:00:00:00:00
I assume that you set the MAC address to the arpcom.ac_enaddr
for the device.
bcopy(macvar, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN);
^^^^^ from ROM
The MAC address is stored in 2 places. The driver and ifconfig -lla
set up the variable ac_enaddr and ether_ifattach copies it
into the correct sockaddr_dl location.
the SIOCGIFADDR ioctl returns the value stored in the ac_enaddr.
--mark tinguely.
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