From 91541ab192fc7f573e6c711ba9c2ae22a299c408 Mon Sep 17 00:00:00 2001 From: Vadim Fedorenko Date: Mon, 22 Apr 2024 15:50:23 -0700 Subject: selftests: bpf: crypto skcipher algo selftests Add simple tc hook selftests to show the way to work with new crypto BPF API. Some tricky dynptr initialization is used to provide empty iv dynptr. Simple AES-ECB algo is used to demonstrate encryption and decryption of fixed size buffers. Signed-off-by: Vadim Fedorenko Link: https://lore.kernel.org/r/20240422225024.2847039-4-vadfed@meta.com Signed-off-by: Martin KaFai Lau --- tools/testing/selftests/bpf/progs/crypto_basic.c | 68 ++++++++++++++++++++++++ 1 file changed, 68 insertions(+) create mode 100644 tools/testing/selftests/bpf/progs/crypto_basic.c (limited to 'tools/testing/selftests/bpf/progs/crypto_basic.c') diff --git a/tools/testing/selftests/bpf/progs/crypto_basic.c b/tools/testing/selftests/bpf/progs/crypto_basic.c new file mode 100644 index 000000000000..8cf7168b42d5 --- /dev/null +++ b/tools/testing/selftests/bpf/progs/crypto_basic.c @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */ + +#include "vmlinux.h" +#include +#include +#include "bpf_misc.h" +#include "bpf_kfuncs.h" +#include "crypto_common.h" + +int status; +SEC("syscall") +int crypto_release(void *ctx) +{ + struct bpf_crypto_params params = { + .type = "skcipher", + .algo = "ecb(aes)", + .key_len = 16, + }; + + struct bpf_crypto_ctx *cctx; + int err = 0; + + status = 0; + + cctx = bpf_crypto_ctx_create(¶ms, sizeof(params), &err); + + if (!cctx) { + status = err; + return 0; + } + + bpf_crypto_ctx_release(cctx); + + return 0; +} + +SEC("syscall") +__failure __msg("Unreleased reference") +int crypto_acquire(void *ctx) +{ + struct bpf_crypto_params params = { + .type = "skcipher", + .algo = "ecb(aes)", + .key_len = 16, + }; + struct bpf_crypto_ctx *cctx; + int err = 0; + + status = 0; + + cctx = bpf_crypto_ctx_create(¶ms, sizeof(params), &err); + + if (!cctx) { + status = err; + return 0; + } + + cctx = bpf_crypto_ctx_acquire(cctx); + if (!cctx) + return -EINVAL; + + bpf_crypto_ctx_release(cctx); + + return 0; +} + +char __license[] SEC("license") = "GPL"; -- cgit v1.2.3