flow_chain_t
flow_chain_t *
flow_chain_t *flow_curr = NULL;
flow_curr = (flow_chain_t *)malloc(sizeof (flow_chain_t));
flow_chain_t *fcurr;
flow_chain_t *fprev;
flow_chain_t *tofree;
flow_chain_t *flow_node;
flow_chain_t *fs_flowchain;