ocs_hw_io_add_seed_sge
extern ocs_hw_rtn_e ocs_hw_io_add_seed_sge(ocs_hw_t *hw, ocs_hw_io_t *io, ocs_hw_dif_info_t *dif_info);
rc = ocs_hw_io_add_seed_sge(hw, hio, hw_dif);