FI2Q
q = FI2Q(c, m->flow_id);
struct dn_queue *_q = FI2Q(c, mb->flow_id);
struct dn_queue *_q = FI2Q(c, mb->flow_id);
struct dn_queue *q = FI2Q(c, m->flow_id);
struct dn_queue *q = FI2Q(c, j);
struct dn_queue *q = FI2Q(c, i);