Bridge extensions to iproute2

I can't quite seem to locate the bridge extensions to iproute2.

Mentioned for example at:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=b078f0df676233fc7ebc1ab270bd11ef5824bb64

I'm interested in finding a way to disable the stp and learning on a
bridge and manually from userspace configuring the mac forwarding
database.
[for basically a userspace STP implementation, which wouldn't actually
be a tree]

Can this be done?

Thanks,

- Maciej