Macro vmm_sys_util::ioctl_iow_nr

macro_rules! ioctl_iow_nr {
    ($name:ident, $ty:expr, $nr:expr, $size:ty) => { ... };
    ($name:ident, $ty:expr, $nr:expr, $size:ty, $($v:ident),+) => { ... };
}

Declare an ioctl that writes data.

const TUNTAP: ::std::os::raw::c_uint = 0x54;
ioctl_iow_nr!(TUNSETQUEUE, TUNTAP, 0xd9, ::std::os::raw::c_int);