1// SPDX-License-Identifier: GPL-2.0
 2/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */
 3
 4#include "vmlinux.h"
 5#include <bpf/bpf_helpers.h>
 6#include <bpf/bpf_tracing.h>
 7#include "bpf_misc.h"
 8#include "bpf_kfuncs.h"
 9#include "crypto_common.h"
10
11int status;
12SEC("syscall")
13int crypto_release(void *ctx)
14{
15	struct bpf_crypto_params params = {
16		.type = "skcipher",
17		.algo = "ecb(aes)",
18		.key_len = 16,
19	};
20
21	struct bpf_crypto_ctx *cctx;
22	int err = 0;
23
24	status = 0;
25
26	cctx = bpf_crypto_ctx_create(&params, sizeof(params), &err);
27
28	if (!cctx) {
29		status = err;
30		return 0;
31	}
32
33	bpf_crypto_ctx_release(cctx);
34
35	return 0;
36}
37
38SEC("syscall")
39__failure __msg("Unreleased reference")
40int crypto_acquire(void *ctx)
41{
42	struct bpf_crypto_params params = {
43		.type = "skcipher",
44		.algo = "ecb(aes)",
45		.key_len = 16,
46	};
47	struct bpf_crypto_ctx *cctx;
48	int err = 0;
49
50	status = 0;
51
52	cctx = bpf_crypto_ctx_create(&params, sizeof(params), &err);
53
54	if (!cctx) {
55		status = err;
56		return 0;
57	}
58
59	cctx = bpf_crypto_ctx_acquire(cctx);
60	if (!cctx)
61		return -EINVAL;
62
63	bpf_crypto_ctx_release(cctx);
64
65	return 0;
66}
67
68char __license[] SEC("license") = "GPL";