root/tools/testing/selftests/bpf/progs/loop5.c
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2019 Facebook
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>

char _license[] SEC("license") = "GPL";

SEC("socket")
int while_true(volatile struct __sk_buff* skb)
{
        int i = 0;

        while (1) {
                if (skb->len)
                        i += 3;
                else
                        i += 7;
                if (i == 9)
                        break;
                barrier();
                if (i == 10)
                        break;
                barrier();
                if (i == 13)
                        break;
                barrier();
                if (i == 14)
                        break;
        }
        return i;
}