8.16. SG_GET_SCSI_ID

typedef struct sg_scsi_id { /* used by SG_GET_SCSI_ID ioctl() */
    int host_no;        /* as in "scsi<n>" where 'n' is one of 0, 1, 2 etc */
    int channel;
    int scsi_id;        /* scsi id of target device */
    int lun;
    int scsi_type;      /* TYPE_... defined in scsi/scsi.h */
    short h_cmd_per_lun;/* host (adapter) maximum commands per lun */
    short d_queue_depth;/* device (or adapter) maximum queue length */
    int unused[2];      /* probably find a good use, set 0 for now */
} sg_scsi_id_t;