static struct tcf_proto *tcf_chain_tp_prev(struct tcf_chain *chain,
					   struct tcf_chain_info *chain_info)
{
	return tcf_chain_dereference(*chain_info->pprev, chain);
}
static struct tcf_proto *tcf_chain_tp_prev(struct tcf_chain *chain,
					   struct tcf_chain_info *chain_info)
{
	return tcf_chain_dereference(*chain_info->pprev, chain);
}