Function gbp_node_send_control 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn gbp_node_send_control(
    nh: i32,
    mh: i32,
    target: u32,
    opcode: u16,
    transition_id: u32,
    request_id: u32,
    args_ptr: *const u8,
    args_len: usize,
) -> GbpBuffer

Sends a control plane message on Stream 0.

The returned buffer layout is [u32-LE target | wire].

Safety

args_ptr MUST be valid for args_len bytes.