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

   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__attribute__ ((noinline))
   8void foo(struct __sk_buff *skb)
   9{
  10        skb->tc_index = 0;
  11}
  12
  13SEC("classifier/test")
  14int test_cls(struct __sk_buff *skb)
  15{
  16        foo(skb);
  17        return 0;
  18}
  19