rbd_struct
volatile struct rbd_struct *rbd;
rbd = (struct rbd_struct *) ptr;
memset((char *) rbd,0,sizeof(struct rbd_struct)*(p->num_recv_buffs));
struct rbd_struct *rbd;
rbd = (struct rbd_struct *) make32(p->rfd_top->rbd_offset);
rbd = (struct rbd_struct *) make32(rbd->next);
volatile struct rbd_struct *rbds;
rbds = (struct rbd_struct *) make32(rfds->rbd_offset);