ips_user_request
ips_user_request *user_request;
user_request = (ips_user_request *)addr;
static int ips_ioctl_cmd(ips_softc_t *sc, ips_ioctl_t *ioctl_cmd, ips_user_request *user_request)
#define IPS_USER_CMD _IOWR(0x81,0x21,ips_user_request)