HH_FLOWS_CNT
for (i = 0; i < HH_FLOWS_CNT; i++) {
q->hh_flows = kvzalloc_objs(struct list_head, HH_FLOWS_CNT);
for (i = 0; i < HH_FLOWS_CNT; i++)
q->hh_flows_limit = 2 * HH_FLOWS_CNT;