LXR linux/tools/testing/selftests/bpf/progs/test_global

   1// SPDX-License-Identifier: GPL-2.0-only
   2#include <stddef.h>
   3#include <linux/bpf.h>
   4#include <bpf/bpf_helpers.h>
   5
   6struct S {
   7        int x;
   8};
   9
  10__noinline int foo(const struct S *s)
  11{
  12        if (s)
  13                return bpf_get_prandom_u32() < s->x;
  14
  15        return 0;
  16}
  17
  18SEC("cgroup_skb/ingress")
  19int test_cls(struct __sk_buff *skb)
  20{
  21        const struct S *s = (const struct S *)(0xbedabeda);
  22
  23        return foo(s);
  24}
  25