int nvme_identify_iocs (int fd , __u16 cntlid , struct nvme_id_iocs *iocs );
File descriptor of nvme device
User space destination address to transfer the data
Retrieves list of the controller's supported io command set vectors. See struct nvme_id_iocs.
The nvme command status if a response was received (see enum nvme_status_field) or -1 with errno set otherwise.