rvt_sge
int rvt_rkey_ok(struct rvt_qp *qp, struct rvt_sge *sge,
struct rvt_sge *isge, struct ib_sge *sge, int acc);
struct rvt_sge *sg_list; /* next SGE to be used if any */
struct rvt_sge sge; /* progress state for the current SGE */
struct rvt_sge sg_list[0];
struct rvt_sge rdma_sge;
struct rvt_sge r_sg_list[0] /* verified SGEs */
sizeof(struct rvt_sge)) * n);