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        return bpf_get_prandom_u32() < s->x;
  13}
  14
  15SEC("cgroup_skb/ingress")
  16int test_cls(struct __sk_buff *skb)
  17{
  18        const struct S s = {.x = skb->len };
  19
  20        return foo(&s);
  21}
  22