does suse 8.0's kernel has support for diffserv?

I am setting up a diffserv testbed, but in spite net/sched/cls_tcindex.c has some places that mentioned Diffserv, but I just do not know how to make sure it does fully support it, on diffserv.sourceforge.net, they said "Some Linux distributions already include tc, but it may be an old version, without support for Diffserv. " thanks. Cheers