root/tools/testing/selftests/bpf/progs/test_global_func8.c
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2020 Facebook */
#include <stddef.h>
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include "bpf_misc.h"

__noinline int foo(struct __sk_buff *skb)
{
        return bpf_get_prandom_u32();
}

SEC("cgroup_skb/ingress")
__success
int global_func8(struct __sk_buff *skb)
{
        if (!foo(skb))
                return 0;

        return 1;
}