Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/* Copyright (c) 2024 Meta Platforms, Inc */
3#include <vmlinux.h>
4#include <bpf/bpf_helpers.h>
5#include "bpf_misc.h"
6#include "bpf_kfuncs.h"
7#include "../test_kmods/bpf_testmod_kfunc.h"
8
9SEC("tc")
10int kfunc_dynptr_nullable_test1(struct __sk_buff *skb)
11{
12 struct bpf_dynptr data;
13
14 bpf_dynptr_from_skb(skb, 0, &data);
15 bpf_kfunc_dynptr_test(&data, NULL);
16
17 return 0;
18}
19
20SEC("tc")
21int kfunc_dynptr_nullable_test2(struct __sk_buff *skb)
22{
23 struct bpf_dynptr data;
24
25 bpf_dynptr_from_skb(skb, 0, &data);
26 bpf_kfunc_dynptr_test(&data, &data);
27
28 return 0;
29}
30
31SEC("tc")
32__failure __msg("expected pointer to stack or const struct bpf_dynptr")
33int kfunc_dynptr_nullable_test3(struct __sk_buff *skb)
34{
35 struct bpf_dynptr data;
36
37 bpf_dynptr_from_skb(skb, 0, &data);
38 bpf_kfunc_dynptr_test(NULL, &data);
39
40 return 0;
41}
42
43char _license[] SEC("license") = "GPL";