tools/testing/selftests/bpf/progs/test_global_func8.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* Copyright (c) 2020 Facebook */
   3 #include <stddef.h>
   4 #include <linux/bpf.h>
   5 #include <bpf/bpf_helpers.h>
   6
   7 __noinline int foo(struct __sk_buff *skb)
   8 {
   9         return bpf_get_prandom_u32();
  10 }
  11
  12 SEC("cgroup_skb/ingress")
  13 int test_cls(struct __sk_buff *skb)
  14 {
  15         if (!foo(skb))
  16                 return 0;
  17
  18         return 1;
  19 }