libnvme(9) API Manual libnvme(9) NAME enum nvme_lm_ctrl_data_queue_fid - Controller Data Queue - Set Feature SYNOPSIS enum nvme_lm_ctrl_data_queue_fid { NVME_LM_CTRL_DATA_QUEUE_ETPT_MASK , NVME_LM_CTRL_DATA_QUEUE_ETPT_SHIFT }; Constants NVME_LM_CTRL_DATA_QUEUE_ETPT_MASK Mask to set Enable Tail Pointer Trigger (ETPT) NVME_LM_CTRL_DATA_QUEUE_ETPT_SHIFT Shift to set ETPT October 2026 enum nvme_lm_ctrl_data_queue_fid libnvme(9)