[Bridge] RSTP location and GPL info

[Stephen Hemminger]

On Wed, 1 Oct 2008 10:57:42 -0400
"M T" <m.t.linuxbridge at gmail.com> wrote:

> I am currently working on a project for work where I need to implement RSTP
> on non-Linux platforms (possibly ThreadX). I saw that there was a form by
> Mr. Srinivas Aji that implemented RSTP on Linux Bridge. Can someone please
> tell me if that fork is somewhere on the kernel.org git repository?
> 
> I would like to use this work (without changing any code). I don't
> understand the intricacies of GPL.
> 
> * Can someone please point me to resources that say what I can and cannot
> use in my project?
> * I cannot open source my project but I am willing to contribute back any
> changes I make to portions of linux bridge. I don't mind testing it on linux
> before submitting changes. Is this alright?
> * Also, I just need to use portions of the project. For example, I only care
> about the state machines and not the interaction with the Linux OS. Can I
> just use bits and pieces of the linux bridge project?
> 
> Thanks,
> MT

Did you look at
git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/rstp.git

It is GPL v2.