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 "../bpf_testmod/bpf_testmod_kfunc.h"
8
9 SEC("tc")
10 int 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
20 SEC("tc")
21 int 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
31 SEC("tc")
32 __failure __msg("expected pointer to stack or const struct bpf_dynptr")
33 int 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
43 char _license[] SEC("license") = "GPL";
44
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