Re: [Qemu-devel] qemu networking help

[Mulyadi Santosa]

Hi...


> I'm currently working on a project where we're using qemu to trace
> information flow through the operating system.  One of the things
> that we'd like to do is trace network data as it flows through the
> operating system.  I've been reading through the code, and I've
> gotten a bit lost.  I gather that slirp is where data comes and goes
> from the host operating system, but I'm looking for the section of
> code that sends and receives data from the guest operating system.  I
> read through the network device code (ne2000.c), and my guess is that
> the inb and outb functions are used to transfer data to the guest,
> but I'm not quite certain how that is done.  Is there anything that
> anyone can point me to that would explain the process of getting data
> from the networking device to the guest operating system?  Also, is
> there anything that explains the ne2k networking device a little
> more, and could explain what all the registers are and how to use
> them?  Thanks in advance for any help you may offer.

Maybe it's not so helpful, but have you considered simply running
tcpdump in each guest OS? or running combination of netfilter+ulogd
(again, in each guest OS)?

regards,

Mulyadi.