Hi All
Sorry pls disregard my message. I was able to do it. I created a driver
similar to vde and pcap linking user space library libc.a and then I
exported the symbols to make TCP connections. Then I created a normal
loadable module to use those methods to make a connection to a server out of
the UML instance. Then when I install that module in the UML once all the
networking is already setup it connects to my outside server without no
issue.
Thanks
David
On Mon, May 19, 2008 at 5:29 PM, David Francisco Rodriguez Perez <
[EMAIL PROTECTED]> wrote:
> Hi
>
> I was able to compile my driver using user space library libc.a. But when I
> run the Linux executable, it runs this driver very early in the bootup
> process such that I have not setup the ethernet eth0 interface.
> So the output looks like:
> HelloTCP Start
> Not able to connect to remote client...
>
> Then...I see the config on the eth0.
>
> So I wanted to compile the driver as a loadable module but now I have
> problems compiling due to errors of the users space socket system calls like
> "socket", "connect", "setsockopt", as undefined. How could I do it?
>
> David
>
> On Fri, May 16, 2008 at 2:02 PM, Jeff Dike <[EMAIL PROTECTED]> wrote:
>
>> On Fri, May 16, 2008 at 11:35:20AM -0700, David Francisco Rodriguez Perez
>> wrote:
>> > I am working on a simulator of a product and so far we have decided to
>> go
>> > with UML. I have so far 2 questions.
>> > 1. There is a network namespace patch that is coming into the mainline
>> in
>> > 2.6.26. Is this patch going to be supported in UML?
>>
>> If it's in mainline, it's in UML (for the most part - some things
>> require arch support, but I don't the the namespace stuff is among them).
>>
>> > 2. The following question is maybe a no-brainer. We have a a user space
>> > program using the socket library to connect to a server outside the UML
>> > entity. We would like to change that to a kernel driver in UML. Can we
>> > create a module for UML that uses a user space library like the socket
>> > library? I would assume not, but just to confirm.
>>
>> You can. That's how UML drivers generally work. See pcap and vde for
>> a couple of drivers that pull in libraries.
>>
>> Jeff
>>
>> --
>> Work email - jdike at linux dot intel dot com
>>
>
>
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
User-mode-linux-user mailing list
User-mode-linux-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
