From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49883) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eBbLl-0006Pl-UV for qemu-devel@nongnu.org; Mon, 06 Nov 2017 01:57:38 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eBbLh-0000C2-9e for qemu-devel@nongnu.org; Mon, 06 Nov 2017 01:57:38 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:2278) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1eBbLg-00005R-NP for qemu-devel@nongnu.org; Mon, 06 Nov 2017 01:57:33 -0500 From: "Longpeng(Mike)" Date: Mon, 6 Nov 2017 14:57:01 +0800 Message-ID: <1509951422-20060-10-git-send-email-longpeng2@huawei.com> In-Reply-To: <1509951422-20060-1-git-send-email-longpeng2@huawei.com> References: <1509951422-20060-1-git-send-email-longpeng2@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [RFC 09/10] cryptodev-builtin: add stateless cipher support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: arei.gonglei@huawei.com, pasic@linux.vnet.ibm.com Cc: weidong.huang@huawei.com, wangxinxin.wang@huawei.com, jianjay.zhou@huawei.com, qemu-devel@nongnu.org, "Longpeng(Mike)" Adds stateless cipher support for builtin-backend Signed-off-by: Gonglei [simplify the code & correct the return value] Signed-off-by: Longpeng(Mike) --- backends/cryptodev-builtin.c | 86 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) diff --git a/backends/cryptodev-builtin.c b/backends/cryptodev-builtin.c index ba6d15c..e0737e0 100644 --- a/backends/cryptodev-builtin.c +++ b/backends/cryptodev-builtin.c @@ -335,6 +335,13 @@ static int cryptodev_builtin_sym_operation( return -VIRTIO_CRYPTO_NOTSUPP; } + if (op_info->op_code != VIRTIO_CRYPTO_CIPHER_ENCRYPT && + op_info->op_code != VIRTIO_CRYPTO_CIPHER_DECRYPT) { + error_setg(errp, + "Unsupported op code: %u", op_info->op_code); + return -VIRTIO_CRYPTO_NOTSUPP; + } + sess = builtin->sessions[op_info->session_id]; if (op_info->iv_len > 0) { @@ -389,6 +396,84 @@ static void cryptodev_builtin_cleanup( cryptodev_backend_set_ready(backend, false); } +static int +cryptodev_builtin_sym_stateless_operation( + CryptoDevBackend *backend, + CryptoDevBackendSymStatelessInfo *op_info, + uint32_t queue_index, Error **errp) +{ + CryptoDevBackendSymSessionInfo *sess_info; + CryptoDevBackendSymOpInfo *sym_op_info; + int algo, mode; + int ret; + QCryptoCipher *cipher = NULL; + + sess_info = &op_info->session_info; + sym_op_info = &op_info->op_info; + + if (sess_info->op_type != VIRTIO_CRYPTO_SYM_OP_CIPHER) { + error_setg(errp, "Unsupported op_type: %u", sess_info->op_type); + return -VIRTIO_CRYPTO_NOTSUPP; + } + + switch (sym_op_info->op_code) { + case VIRTIO_CRYPTO_CIPHER_ENCRYPT: + case VIRTIO_CRYPTO_CIPHER_DECRYPT: + ret = cryptodev_builtin_get_cipher_alg_mode(sess_info, + &algo, &mode, errp); + if (ret < 0) { + return -VIRTIO_CRYPTO_NOTSUPP; + } + + cipher = qcrypto_cipher_new(algo, mode, + sess_info->cipher_key, + sess_info->key_len, + errp); + if (!cipher) { + return -VIRTIO_CRYPTO_ERR; + } + + if (sym_op_info->iv_len > 0) { + ret = qcrypto_cipher_setiv(cipher, sym_op_info->iv, + sym_op_info->iv_len, errp); + if (ret < 0) { + ret = -VIRTIO_CRYPTO_ERR; + goto out; + } + } + + if (sess_info->direction == VIRTIO_CRYPTO_OP_ENCRYPT) { + ret = qcrypto_cipher_encrypt(cipher, sym_op_info->src, + sym_op_info->dst, + sym_op_info->src_len, errp); + if (ret < 0) { + ret = -VIRTIO_CRYPTO_ERR; + goto out; + } + } else { + ret = qcrypto_cipher_decrypt(cipher, sym_op_info->src, + sym_op_info->dst, + sym_op_info->src_len, errp); + if (ret < 0) { + ret = -VIRTIO_CRYPTO_ERR; + goto out; + } + } + break; + + default: + error_setg(errp, "Unsupported op_code: %" PRIu32 "", + sym_op_info->op_code); + return -VIRTIO_CRYPTO_NOTSUPP; + } + + ret = VIRTIO_CRYPTO_OK; + +out: + qcrypto_cipher_free(cipher); + return ret; +} + static void cryptodev_builtin_class_init(ObjectClass *oc, void *data) { @@ -399,6 +484,7 @@ cryptodev_builtin_class_init(ObjectClass *oc, void *data) bc->create_session = cryptodev_builtin_sym_create_session; bc->close_session = cryptodev_builtin_sym_close_session; bc->do_sym_op = cryptodev_builtin_sym_operation; + bc->do_sym_stateless_op = cryptodev_builtin_sym_stateless_operation; } static const TypeInfo cryptodev_builtin_info = { -- 1.8.3.1