Re: GSoC project about virtualization using Hurd mechanisms

[zhengda]

olafBuddenhagen@gmx.net wrote:
> Hi,
>
> On Fri, Apr 04, 2008 at 06:00:38PM +0200, Zheng Da wrote:
>
>   
> > So could you give me some more advices to help me get into the project
> > faster? For example, which article or which part of code should I read
> > first?
> >     
>
> I think studying the interaction between the TCP/IP stack (pfinet) and
> the kernel eth0 device is the best starting point.
>
> -antrik-
Hi,

I read the code of pfinet, and find the implementation of TCP/IP stack 
is almost the same as the linux.
It's a very good news for me:-) I almost don't need to spend time on it.
The problem is how pfinet and network device driver in gnumach build the 
connection.
pfinet uses libtrivfs to build the translator, but I haven't find any 
code which could connect to the network driver in gnumach.
Then I look into the code of gnumach,
the interesting part I found is the packet filter.
The packet received by the driver is spread by the packet filter, which 
specifies the destination of every copy of the packet.
So I guess as long as the right packet filter is set, the kernel will 
send the packet to pfinet.
But, unfortunately, I cannot find any code in hurd which tries to set 
the packet filter.

Best,
Zheng Da