__tcf_get_next_proto
struct tcf_proto *tp_next = __tcf_get_next_proto(chain, tp);
for (tp = __tcf_get_next_proto(chain, NULL); tp;
tp = __tcf_get_next_proto(chain, tp),
for (tp = __tcf_get_next_proto(chain, NULL);
tp = __tcf_get_next_proto(chain, tp),