Re: 2 Networking questions

To: oskit-users@fast.cs.utah.edu, vlchung@cs.uwa.edu.au
Subject: Re: 2 Networking questions
From: Kevin Van Maren <vanmaren>
Date: Tue, 16 Nov 1999 10:29:28 -0700 (MST)
Sender: owner-oskit-users@fast.cs.utah.edu

> My other question is does the OSkit have any ethernet multicasting
> support?

No.  The device drivers do not currently export any mechanism for
adding/removing multicast addresses, which will prevent receiving
multicast packets, or anyone elses packets, for most network interfaces.

A `quick hack' approximation can be made by changing this file:
oskit/linux/src/drivers/net/net_init.c

Change this line:
	dev->flags              = IFF_BROADCAST|IFF_MULTICAST;
to:
	dev->flags              = IFF_BROADCAST|IFF_MULTICAST|IFF_PROMISC;
or
	dev->flags              = IFF_BROADCAST|IFF_MULTICAST|IFF_ALLMULTI;

You can, of course, send any packet contents you wish by calling
`push' on the driver's netio COM object.

Kevin Van Maren
University of Utah, CSL