CAM_MAX_CDBLEN
alloc_len = sizeof(*one) + CAM_MAX_CDBLEN;
#define IOCDBLEN CAM_MAX_CDBLEN /* Space for CDB bytes/pointer */
#if defined(CAM_MAX_CDBLEN) && (CAM_MAX_CDBLEN < SCSI_MAX_CDBLEN)
uint8_t _last_io_cdb[CAM_MAX_CDBLEN];
uint8_t _last_ctl_cdb[CAM_MAX_CDBLEN];
#define UMASS_MAX_CMDLEN MAX(12, CAM_MAX_CDBLEN) /* bytes */