| 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 | #include "bpf_misc.h" |
| 7 | |
| 8 | __attribute__ ((noinline)) |
| 9 | void foo(struct __sk_buff *skb) |
| 10 | { |
| 11 | skb->tc_index = 0; |
| 12 | } |
| 13 | |
| 14 | SEC("tc") |
| 15 | __failure __msg("foo() doesn't return scalar") |
| 16 | int global_func7(struct __sk_buff *skb) |
| 17 | { |
| 18 | foo(skb); |
| 19 | return 0; |
| 20 | } |
| 21 |