enum wsa_ioctl_type

enum wsa_ioctl_type {
    WSA_IOCTL_VOID          = 0,
    WSA_IOCTL_INT,
    WSA_IOCTL_SA,
    WSA_IOCTL_SAA,
    WSA_IOCTL_GUID,
    WSA_IOCTL_TCP_KEEPALIVE,
    WSA_IOCTL_QOS,
    WSA_IOCTL_PTR,
};