Dispatch ioctl to scsi device
int scsi_ioctl(struct scsi_device * sdev, int cmd, void __user * arg);
sdev
scsi device receiving ioctl
cmd
which ioctl is it
arg
data associated with ioctl
The scsi_ioctl function differs from most ioctls in that it does not take a major/minor number as the dev field. Rather, it takes a pointer to a struct scsi_device.