aya/test/integration-ebpf/src/simple_prog.rs

// Socket Filter program for testing with an arbitrary program.
// This is mainly used in tests with consideration for old kernels.

#![no_std]
#![no_main]

use aya_ebpf::{macros::socket_filter, programs::SkBuffContext};

// Introduced in kernel v3.19.
#[socket_filter]
pub fn simple_prog(_ctx: SkBuffContext) -> i64 {
    0
}

#[cfg(not(test))]
#[panic_handler]
fn panic(_info: &core::panic::PanicInfo) -> ! {
    loop {}
}