Using ioctl communication between Kernel mode and user mode

I want to communicate with my kernel module using ioctl. I have written two c program one for kernel module and other for user mode. I am getting this error while compiling kernel module:

error: unknown field ‘ioctl’ specified in initializer

at this line :

struct file_operations Fops = {
 .read = device_read,
 .write = device_write,
 .ioctl = device_ioctl,  ------> at this point error is occuring.
 .open = device_open,
 .release = device_release,
};

any idea why this is happening.

thanks