nvme_mi_admin_xfer - Raw admin transfer interface.

ctrl controller to send the admin command to admin_req request data req_data_size size of request data payload admin_resp buffer for response data resp_data_offset offset into request data to retrieve from controller resp_data_size size of response data buffer, updated to received size

Performs an arbitrary NVMe Admin command, using the provided request data, in admin_req. The size of the request data *payload* is specified in req_data_size - this does not include the standard header length (so a header-only request would have a size of 0). On success, response data is stored in admin_resp, which has an optional appended payload buffer of resp_data_size bytes. The actual payload transferred will be stored in resp_data_size. These sizes do not include the Admin request header, so 0 represents no payload. As with all Admin commands, we can request partial data from the Admin Response payload, offset by resp_data_offset. See: structnvme_mi_admin_req_hdr and structnvme_mi_admin_resp_hdr.

nvme_mi_admin_xfer - Raw admin transfer interface.

The nvme command status if a response was received (see enumnvme_status_field) or -1 with errno set otherwise.. August 2025 nvme_mi_admin_xfer nvme_mi_admin_xfer(2)