[thirdparty/qemu.git] / backends / cryptodev-builtin.c

/*
 * QEMU Cryptodev backend for QEMU cipher APIs
 *
 * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
 *
 * Authors:
 *    Gonglei <arei.gonglei@huawei.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "qemu/osdep.h"
#include "sysemu/cryptodev.h"
#include "qapi/error.h"
#include "standard-headers/linux/virtio_crypto.h"
#include "crypto/cipher.h"
#include "crypto/akcipher.h"
#include "qom/object.h"


/**
 * @TYPE_CRYPTODEV_BACKEND_BUILTIN:
 * name of backend that uses QEMU cipher API
 */
#define TYPE_CRYPTODEV_BACKEND_BUILTIN "cryptodev-backend-builtin"

OBJECT_DECLARE_SIMPLE_TYPE(CryptoDevBackendBuiltin, CRYPTODEV_BACKEND_BUILTIN)


typedef struct CryptoDevBackendBuiltinSession {
    QCryptoCipher *cipher;
    uint8_t direction; /* encryption or decryption */
    uint8_t type; /* cipher? hash? aead? */
    QCryptoAkCipher *akcipher;
    QTAILQ_ENTRY(CryptoDevBackendBuiltinSession) next;
} CryptoDevBackendBuiltinSession;

/* Max number of symmetric/asymmetric sessions */
#define MAX_NUM_SESSIONS 256

#define CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN    512
#define CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN  64

struct CryptoDevBackendBuiltin {
    CryptoDevBackend parent_obj;

    CryptoDevBackendBuiltinSession *sessions[MAX_NUM_SESSIONS];
};

static void cryptodev_builtin_init(
             CryptoDevBackend *backend, Error **errp)
{
    /* Only support one queue */
    int queues = backend->conf.peers.queues;
    CryptoDevBackendClient *cc;

    if (queues != 1) {
        error_setg(errp,
                  "Only support one queue in cryptdov-builtin backend");
        return;
    }

    cc = cryptodev_backend_new_client(
              "cryptodev-builtin", NULL);
    cc->info_str = g_strdup_printf("cryptodev-builtin0");
    cc->queue_index = 0;
    cc->type = QCRYPTODEV_BACKEND_TYPE_BUILTIN;
    backend->conf.peers.ccs[0] = cc;

    backend->conf.crypto_services =
                         1u << VIRTIO_CRYPTO_SERVICE_CIPHER |
                         1u << VIRTIO_CRYPTO_SERVICE_HASH |
                         1u << VIRTIO_CRYPTO_SERVICE_MAC |
                         1u << VIRTIO_CRYPTO_SERVICE_AKCIPHER;
    backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC;
    backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1;
    backend->conf.akcipher_algo = 1u << VIRTIO_CRYPTO_AKCIPHER_RSA;
    /*
     * Set the Maximum length of crypto request.
     * Why this value? Just avoid to overflow when
     * memory allocation for each crypto request.
     */
    backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendOpInfo);
    backend->conf.max_cipher_key_len = CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN;
    backend->conf.max_auth_key_len = CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN;

    cryptodev_backend_set_ready(backend, true);
}

static int
cryptodev_builtin_get_unused_session_index(
                 CryptoDevBackendBuiltin *builtin)
{
    size_t i;

    for (i = 0; i < MAX_NUM_SESSIONS; i++) {
        if (builtin->sessions[i] == NULL) {
            return i;
        }
    }

    return -1;
}

#define AES_KEYSIZE_128 16
#define AES_KEYSIZE_192 24
#define AES_KEYSIZE_256 32
#define AES_KEYSIZE_128_XTS AES_KEYSIZE_256
#define AES_KEYSIZE_256_XTS 64

static int
cryptodev_builtin_get_aes_algo(uint32_t key_len, int mode, Error **errp)
{
    int algo;

    if (key_len == AES_KEYSIZE_128) {
        algo = QCRYPTO_CIPHER_ALG_AES_128;
    } else if (key_len == AES_KEYSIZE_192) {
        algo = QCRYPTO_CIPHER_ALG_AES_192;
    } else if (key_len == AES_KEYSIZE_256) { /* equals AES_KEYSIZE_128_XTS */
        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
            algo = QCRYPTO_CIPHER_ALG_AES_128;
        } else {
            algo = QCRYPTO_CIPHER_ALG_AES_256;
        }
    } else if (key_len == AES_KEYSIZE_256_XTS) {
        if (mode == QCRYPTO_CIPHER_MODE_XTS) {
            algo = QCRYPTO_CIPHER_ALG_AES_256;
        } else {
            goto err;
        }
    } else {
        goto err;
    }

    return algo;

err:
   error_setg(errp, "Unsupported key length :%u", key_len);
   return -1;
}

static int cryptodev_builtin_get_rsa_hash_algo(
    int virtio_rsa_hash, Error **errp)
{
    switch (virtio_rsa_hash) {
    case VIRTIO_CRYPTO_RSA_MD5:
        return QCRYPTO_HASH_ALG_MD5;

    case VIRTIO_CRYPTO_RSA_SHA1:
        return QCRYPTO_HASH_ALG_SHA1;

    case VIRTIO_CRYPTO_RSA_SHA256:
        return QCRYPTO_HASH_ALG_SHA256;

    case VIRTIO_CRYPTO_RSA_SHA512:
        return QCRYPTO_HASH_ALG_SHA512;

    default:
        error_setg(errp, "Unsupported rsa hash algo: %d", virtio_rsa_hash);
        return -1;
    }
}

static int cryptodev_builtin_set_rsa_options(
                    int virtio_padding_algo,
                    int virtio_hash_algo,
                    QCryptoAkCipherOptionsRSA *opt,
                    Error **errp)
{
    if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_PKCS1_PADDING) {
        int hash_alg;

        hash_alg = cryptodev_builtin_get_rsa_hash_algo(virtio_hash_algo, errp);
        if (hash_alg < 0) {
            return -1;
        }
        opt->hash_alg = hash_alg;
        opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_PKCS1;
        return 0;
    }

    if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_RAW_PADDING) {
        opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_RAW;
        return 0;
    }

    error_setg(errp, "Unsupported rsa padding algo: %d", virtio_padding_algo);
    return -1;
}

static int cryptodev_builtin_create_cipher_session(
                    CryptoDevBackendBuiltin *builtin,
                    CryptoDevBackendSymSessionInfo *sess_info,
                    Error **errp)
{
    int algo;
    int mode;
    QCryptoCipher *cipher;
    int index;
    CryptoDevBackendBuiltinSession *sess;

    if (sess_info->op_type != VIRTIO_CRYPTO_SYM_OP_CIPHER) {
        error_setg(errp, "Unsupported optype :%u", sess_info->op_type);
        return -1;
    }

    index = cryptodev_builtin_get_unused_session_index(builtin);
    if (index < 0) {
        error_setg(errp, "Total number of sessions created exceeds %u",
                  MAX_NUM_SESSIONS);
        return -1;
    }

    switch (sess_info->cipher_alg) {
    case VIRTIO_CRYPTO_CIPHER_AES_ECB:
        mode = QCRYPTO_CIPHER_MODE_ECB;
        algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
                                                    mode, errp);
        if (algo < 0)  {
            return -1;
        }
        break;
    case VIRTIO_CRYPTO_CIPHER_AES_CBC:
        mode = QCRYPTO_CIPHER_MODE_CBC;
        algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
                                                    mode, errp);
        if (algo < 0)  {
            return -1;
        }
        break;
    case VIRTIO_CRYPTO_CIPHER_AES_CTR:
        mode = QCRYPTO_CIPHER_MODE_CTR;
        algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
                                                    mode, errp);
        if (algo < 0)  {
            return -1;
        }
        break;
    case VIRTIO_CRYPTO_CIPHER_AES_XTS:
        mode = QCRYPTO_CIPHER_MODE_XTS;
        algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
                                                    mode, errp);
        if (algo < 0)  {
            return -1;
        }
        break;
    case VIRTIO_CRYPTO_CIPHER_3DES_ECB:
        mode = QCRYPTO_CIPHER_MODE_ECB;
        algo = QCRYPTO_CIPHER_ALG_3DES;
        break;
    case VIRTIO_CRYPTO_CIPHER_3DES_CBC:
        mode = QCRYPTO_CIPHER_MODE_CBC;
        algo = QCRYPTO_CIPHER_ALG_3DES;
        break;
    case VIRTIO_CRYPTO_CIPHER_3DES_CTR:
        mode = QCRYPTO_CIPHER_MODE_CTR;
        algo = QCRYPTO_CIPHER_ALG_3DES;
        break;
    default:
        error_setg(errp, "Unsupported cipher alg :%u",
                   sess_info->cipher_alg);
        return -1;
    }

    cipher = qcrypto_cipher_new(algo, mode,
                               sess_info->cipher_key,
                               sess_info->key_len,
                               errp);
    if (!cipher) {
        return -1;
    }

    sess = g_new0(CryptoDevBackendBuiltinSession, 1);
    sess->cipher = cipher;
    sess->direction = sess_info->direction;
    sess->type = sess_info->op_type;

    builtin->sessions[index] = sess;

    return index;
}

static int cryptodev_builtin_create_akcipher_session(
                    CryptoDevBackendBuiltin *builtin,
                    CryptoDevBackendAsymSessionInfo *sess_info,
                    Error **errp)
{
    CryptoDevBackendBuiltinSession *sess;
    QCryptoAkCipher *akcipher;
    int index;
    QCryptoAkCipherKeyType type;
    QCryptoAkCipherOptions opts;

    switch (sess_info->algo) {
    case VIRTIO_CRYPTO_AKCIPHER_RSA:
        opts.alg = QCRYPTO_AKCIPHER_ALG_RSA;
        if (cryptodev_builtin_set_rsa_options(sess_info->u.rsa.padding_algo,
            sess_info->u.rsa.hash_algo, &opts.u.rsa, errp) != 0) {
            return -1;
        }
        break;

    /* TODO support DSA&ECDSA until qemu crypto framework support these */

    default:
        error_setg(errp, "Unsupported akcipher alg %u", sess_info->algo);
        return -1;
    }

    switch (sess_info->keytype) {
    case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC:
        type = QCRYPTO_AKCIPHER_KEY_TYPE_PUBLIC;
        break;

    case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE:
        type = QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE;
        break;

    default:
        error_setg(errp, "Unsupported akcipher keytype %u", sess_info->keytype);
        return -1;
    }

    index = cryptodev_builtin_get_unused_session_index(builtin);
    if (index < 0) {
        error_setg(errp, "Total number of sessions created exceeds %u",
                   MAX_NUM_SESSIONS);
        return -1;
    }

    akcipher = qcrypto_akcipher_new(&opts, type, sess_info->key,
                                    sess_info->keylen, errp);
    if (!akcipher) {
        return -1;
    }

    sess = g_new0(CryptoDevBackendBuiltinSession, 1);
    sess->akcipher = akcipher;

    builtin->sessions[index] = sess;

    return index;
}

static int cryptodev_builtin_create_session(
           CryptoDevBackend *backend,
           CryptoDevBackendSessionInfo *sess_info,
           uint32_t queue_index,
           CryptoDevCompletionFunc cb,
           void *opaque)
{
    CryptoDevBackendBuiltin *builtin =
                      CRYPTODEV_BACKEND_BUILTIN(backend);
    CryptoDevBackendSymSessionInfo *sym_sess_info;
    CryptoDevBackendAsymSessionInfo *asym_sess_info;
    int ret, status;
    Error *local_error = NULL;

    switch (sess_info->op_code) {
    case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION:
        sym_sess_info = &sess_info->u.sym_sess_info;
        ret = cryptodev_builtin_create_cipher_session(
                    builtin, sym_sess_info, &local_error);
        break;

    case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION:
        asym_sess_info = &sess_info->u.asym_sess_info;
        ret = cryptodev_builtin_create_akcipher_session(
                           builtin, asym_sess_info, &local_error);
        break;

    case VIRTIO_CRYPTO_HASH_CREATE_SESSION:
    case VIRTIO_CRYPTO_MAC_CREATE_SESSION:
    default:
        error_setg(&local_error, "Unsupported opcode :%" PRIu32 "",
                   sess_info->op_code);
        return -VIRTIO_CRYPTO_NOTSUPP;
    }

    if (local_error) {
        error_report_err(local_error);
    }
    if (ret < 0) {
        status = -VIRTIO_CRYPTO_ERR;
    } else {
        sess_info->session_id = ret;
        status = VIRTIO_CRYPTO_OK;
    }
    if (cb) {
        cb(opaque, status);
    }
    return 0;
}

static int cryptodev_builtin_close_session(
           CryptoDevBackend *backend,
           uint64_t session_id,
           uint32_t queue_index,
           CryptoDevCompletionFunc cb,
           void *opaque)
{
    CryptoDevBackendBuiltin *builtin =
                      CRYPTODEV_BACKEND_BUILTIN(backend);
    CryptoDevBackendBuiltinSession *session;

    assert(session_id < MAX_NUM_SESSIONS && builtin->sessions[session_id]);

    session = builtin->sessions[session_id];
    if (session->cipher) {
        qcrypto_cipher_free(session->cipher);
    } else if (session->akcipher) {
        qcrypto_akcipher_free(session->akcipher);
    }

    g_free(session);
    builtin->sessions[session_id] = NULL;
    if (cb) {
        cb(opaque, VIRTIO_CRYPTO_OK);
    }
    return 0;
}

static int cryptodev_builtin_sym_operation(
                 CryptoDevBackendBuiltinSession *sess,
                 CryptoDevBackendSymOpInfo *op_info, Error **errp)
{
    int ret;

    if (op_info->op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) {
        error_setg(errp,
               "Algorithm chain is unsupported for cryptdoev-builtin");
        return -VIRTIO_CRYPTO_NOTSUPP;
    }

    if (op_info->iv_len > 0) {
        ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv,
                                   op_info->iv_len, errp);
        if (ret < 0) {
            return -VIRTIO_CRYPTO_ERR;
        }
    }

    if (sess->direction == VIRTIO_CRYPTO_OP_ENCRYPT) {
        ret = qcrypto_cipher_encrypt(sess->cipher, op_info->src,
                                     op_info->dst, op_info->src_len, errp);
        if (ret < 0) {
            return -VIRTIO_CRYPTO_ERR;
        }
    } else {
        ret = qcrypto_cipher_decrypt(sess->cipher, op_info->src,
                                     op_info->dst, op_info->src_len, errp);
        if (ret < 0) {
            return -VIRTIO_CRYPTO_ERR;
        }
    }

    return VIRTIO_CRYPTO_OK;
}

static int cryptodev_builtin_asym_operation(
                 CryptoDevBackendBuiltinSession *sess, uint32_t op_code,
                 CryptoDevBackendAsymOpInfo *op_info, Error **errp)
{
    int ret;

    switch (op_code) {
    case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT:
        ret = qcrypto_akcipher_encrypt(sess->akcipher,
                                       op_info->src, op_info->src_len,
                                       op_info->dst, op_info->dst_len, errp);
        break;

    case VIRTIO_CRYPTO_AKCIPHER_DECRYPT:
        ret = qcrypto_akcipher_decrypt(sess->akcipher,
                                       op_info->src, op_info->src_len,
                                       op_info->dst, op_info->dst_len, errp);
        break;

    case VIRTIO_CRYPTO_AKCIPHER_SIGN:
        ret = qcrypto_akcipher_sign(sess->akcipher,
                                    op_info->src, op_info->src_len,
                                    op_info->dst, op_info->dst_len, errp);
        break;

    case VIRTIO_CRYPTO_AKCIPHER_VERIFY:
        ret = qcrypto_akcipher_verify(sess->akcipher,
                                      op_info->src, op_info->src_len,
                                      op_info->dst, op_info->dst_len, errp);
        break;

    default:
        return -VIRTIO_CRYPTO_ERR;
    }

    if (ret < 0) {
        if (op_code == VIRTIO_CRYPTO_AKCIPHER_VERIFY) {
            return -VIRTIO_CRYPTO_KEY_REJECTED;
        }
        return -VIRTIO_CRYPTO_ERR;
    }

    /* Buffer is too short, typically the driver should handle this case */
    if (unlikely(ret > op_info->dst_len)) {
        if (errp && !*errp) {
            error_setg(errp, "dst buffer too short");
        }

        return -VIRTIO_CRYPTO_ERR;
    }

    op_info->dst_len = ret;

    return VIRTIO_CRYPTO_OK;
}

static int cryptodev_builtin_operation(
                 CryptoDevBackend *backend,
                 CryptoDevBackendOpInfo *op_info,
                 uint32_t queue_index,
                 CryptoDevCompletionFunc cb,
                 void *opaque)
{
    CryptoDevBackendBuiltin *builtin =
                      CRYPTODEV_BACKEND_BUILTIN(backend);
    CryptoDevBackendBuiltinSession *sess;
    CryptoDevBackendSymOpInfo *sym_op_info;
    CryptoDevBackendAsymOpInfo *asym_op_info;
    enum CryptoDevBackendAlgType algtype = op_info->algtype;
    int status = -VIRTIO_CRYPTO_ERR;
    Error *local_error = NULL;

    if (op_info->session_id >= MAX_NUM_SESSIONS ||
              builtin->sessions[op_info->session_id] == NULL) {
        error_setg(&local_error, "Cannot find a valid session id: %" PRIu64 "",
                   op_info->session_id);
        return -VIRTIO_CRYPTO_INVSESS;
    }

    sess = builtin->sessions[op_info->session_id];
    if (algtype == CRYPTODEV_BACKEND_ALG_SYM) {
        sym_op_info = op_info->u.sym_op_info;
        status = cryptodev_builtin_sym_operation(sess, sym_op_info,
                                                 &local_error);
    } else if (algtype == CRYPTODEV_BACKEND_ALG_ASYM) {
        asym_op_info = op_info->u.asym_op_info;
        status = cryptodev_builtin_asym_operation(sess, op_info->op_code,
                                                  asym_op_info, &local_error);
    }

    if (local_error) {
        error_report_err(local_error);
    }
    if (cb) {
        cb(opaque, status);
    }
    return 0;
}

static void cryptodev_builtin_cleanup(
             CryptoDevBackend *backend,
             Error **errp)
{
    CryptoDevBackendBuiltin *builtin =
                      CRYPTODEV_BACKEND_BUILTIN(backend);
    size_t i;
    int queues = backend->conf.peers.queues;
    CryptoDevBackendClient *cc;

    for (i = 0; i < MAX_NUM_SESSIONS; i++) {
        if (builtin->sessions[i] != NULL) {
            cryptodev_builtin_close_session(backend, i, 0, NULL, NULL);
        }
    }

    for (i = 0; i < queues; i++) {
        cc = backend->conf.peers.ccs[i];
        if (cc) {
            cryptodev_backend_free_client(cc);
            backend->conf.peers.ccs[i] = NULL;
        }
    }

    cryptodev_backend_set_ready(backend, false);
}

static void
cryptodev_builtin_class_init(ObjectClass *oc, void *data)
{
    CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_CLASS(oc);

    bc->init = cryptodev_builtin_init;
    bc->cleanup = cryptodev_builtin_cleanup;
    bc->create_session = cryptodev_builtin_create_session;
    bc->close_session = cryptodev_builtin_close_session;
    bc->do_op = cryptodev_builtin_operation;
}

static const TypeInfo cryptodev_builtin_info = {
    .name = TYPE_CRYPTODEV_BACKEND_BUILTIN,
    .parent = TYPE_CRYPTODEV_BACKEND,
    .class_init = cryptodev_builtin_class_init,
    .instance_size = sizeof(CryptoDevBackendBuiltin),
};

static void
cryptodev_builtin_register_types(void)
{
    type_register_static(&cryptodev_builtin_info);
}

type_init(cryptodev_builtin_register_types);
Commit	Line	Data
1653a5f3 GA	1	/*
	2	* QEMU Cryptodev backend for QEMU cipher APIs
	3	*
	4	* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
	5	*
	6	* Authors:
	7	* Gonglei <arei.gonglei@huawei.com>
	8	*
	9	* This library is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU Lesser General Public
	11	* License as published by the Free Software Foundation; either
0dda001b	12	* version 2.1 of the License, or (at your option) any later version.
1653a5f3 GA	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public
	20	* License along with this library; if not, see <http://www.gnu.org/licenses/>.
	21	*
	22	*/
	23
	24	#include "qemu/osdep.h"
	25	#include "sysemu/cryptodev.h"
1653a5f3 GA	26	#include "qapi/error.h"
	27	#include "standard-headers/linux/virtio_crypto.h"
	28	#include "crypto/cipher.h"
0e660a6f	29	#include "crypto/akcipher.h"
db1015e9	30	#include "qom/object.h"
1653a5f3 GA	31
	32
	33	/**
	34	* @TYPE_CRYPTODEV_BACKEND_BUILTIN:
	35	* name of backend that uses QEMU cipher API
	36	*/
	37	#define TYPE_CRYPTODEV_BACKEND_BUILTIN "cryptodev-backend-builtin"
	38
8063396b	39	OBJECT_DECLARE_SIMPLE_TYPE(CryptoDevBackendBuiltin, CRYPTODEV_BACKEND_BUILTIN)
1653a5f3	40
1653a5f3 GA	41
	42	typedef struct CryptoDevBackendBuiltinSession {
	43	QCryptoCipher *cipher;
	44	uint8_t direction; /* encryption or decryption */
	45	uint8_t type; /* cipher? hash? aead? */
0e660a6f	46	QCryptoAkCipher *akcipher;
1653a5f3 GA	47	QTAILQ_ENTRY(CryptoDevBackendBuiltinSession) next;
	48	} CryptoDevBackendBuiltinSession;
	49
0e660a6f	50	/* Max number of symmetric/asymmetric sessions */
1653a5f3 GA	51	#define MAX_NUM_SESSIONS 256
	52
	53	#define CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN 512
	54	#define CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN 64
	55
	56	struct CryptoDevBackendBuiltin {
	57	CryptoDevBackend parent_obj;
	58
	59	CryptoDevBackendBuiltinSession *sessions[MAX_NUM_SESSIONS];
	60	};
	61
	62	static void cryptodev_builtin_init(
	63	CryptoDevBackend backend, Error *errp)
	64	{
	65	/* Only support one queue */
	66	int queues = backend->conf.peers.queues;
	67	CryptoDevBackendClient *cc;
	68
	69	if (queues != 1) {
	70	error_setg(errp,
	71	"Only support one queue in cryptdov-builtin backend");
	72	return;
	73	}
	74
	75	cc = cryptodev_backend_new_client(
	76	"cryptodev-builtin", NULL);
	77	cc->info_str = g_strdup_printf("cryptodev-builtin0");
	78	cc->queue_index = 0;
14c9fd16	79	cc->type = QCRYPTODEV_BACKEND_TYPE_BUILTIN;
1653a5f3 GA	80	backend->conf.peers.ccs[0] = cc;
	81
	82	backend->conf.crypto_services =
	83	1u << VIRTIO_CRYPTO_SERVICE_CIPHER \|
	84	1u << VIRTIO_CRYPTO_SERVICE_HASH \|
0e660a6f ZP	85	1u << VIRTIO_CRYPTO_SERVICE_MAC \|
0e660a6f ZP	86	1u << VIRTIO_CRYPTO_SERVICE_AKCIPHER;
1653a5f3 GA	87	backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC;
1653a5f3 GA	88	backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1;
0e660a6f	89	backend->conf.akcipher_algo = 1u << VIRTIO_CRYPTO_AKCIPHER_RSA;
1653a5f3 GA	90	/*
	91	* Set the Maximum length of crypto request.
	92	* Why this value? Just avoid to overflow when
	93	* memory allocation for each crypto request.
	94	*/
0e660a6f	95	backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendOpInfo);
1653a5f3 GA	96	backend->conf.max_cipher_key_len = CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN;
1653a5f3 GA	97	backend->conf.max_auth_key_len = CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN;
6138dbda GA	98
6138dbda GA	99	cryptodev_backend_set_ready(backend, true);
1653a5f3 GA	100	}
	101
	102	static int
	103	cryptodev_builtin_get_unused_session_index(
	104	CryptoDevBackendBuiltin *builtin)
	105	{
	106	size_t i;
	107
	108	for (i = 0; i < MAX_NUM_SESSIONS; i++) {
	109	if (builtin->sessions[i] == NULL) {
	110	return i;
	111	}
	112	}
	113
	114	return -1;
	115	}
	116
465f2fed LM	117	#define AES_KEYSIZE_128 16
	118	#define AES_KEYSIZE_192 24
	119	#define AES_KEYSIZE_256 32
	120	#define AES_KEYSIZE_128_XTS AES_KEYSIZE_256
	121	#define AES_KEYSIZE_256_XTS 64
	122
1653a5f3	123	static int
465f2fed	124	cryptodev_builtin_get_aes_algo(uint32_t key_len, int mode, Error **errp)
1653a5f3 GA	125	{
	126	int algo;
	127
465f2fed	128	if (key_len == AES_KEYSIZE_128) {
1653a5f3	129	algo = QCRYPTO_CIPHER_ALG_AES_128;
465f2fed	130	} else if (key_len == AES_KEYSIZE_192) {
1653a5f3	131	algo = QCRYPTO_CIPHER_ALG_AES_192;
465f2fed LM	132	} else if (key_len == AES_KEYSIZE_256) { /* equals AES_KEYSIZE_128_XTS */
	133	if (mode == QCRYPTO_CIPHER_MODE_XTS) {
	134	algo = QCRYPTO_CIPHER_ALG_AES_128;
	135	} else {
	136	algo = QCRYPTO_CIPHER_ALG_AES_256;
	137	}
	138	} else if (key_len == AES_KEYSIZE_256_XTS) {
	139	if (mode == QCRYPTO_CIPHER_MODE_XTS) {
	140	algo = QCRYPTO_CIPHER_ALG_AES_256;
	141	} else {
	142	goto err;
	143	}
1653a5f3	144	} else {
465f2fed	145	goto err;
1653a5f3 GA	146	}
	147
	148	return algo;
465f2fed LM	149
	150	err:
	151	error_setg(errp, "Unsupported key length :%u", key_len);
	152	return -1;
1653a5f3 GA	153	}
1653a5f3 GA	154
0e660a6f ZP	155	static int cryptodev_builtin_get_rsa_hash_algo(
	156	int virtio_rsa_hash, Error **errp)
	157	{
	158	switch (virtio_rsa_hash) {
	159	case VIRTIO_CRYPTO_RSA_MD5:
	160	return QCRYPTO_HASH_ALG_MD5;
	161
	162	case VIRTIO_CRYPTO_RSA_SHA1:
	163	return QCRYPTO_HASH_ALG_SHA1;
	164
	165	case VIRTIO_CRYPTO_RSA_SHA256:
	166	return QCRYPTO_HASH_ALG_SHA256;
	167
	168	case VIRTIO_CRYPTO_RSA_SHA512:
	169	return QCRYPTO_HASH_ALG_SHA512;
	170
	171	default:
	172	error_setg(errp, "Unsupported rsa hash algo: %d", virtio_rsa_hash);
	173	return -1;
	174	}
	175	}
	176
	177	static int cryptodev_builtin_set_rsa_options(
	178	int virtio_padding_algo,
	179	int virtio_hash_algo,
	180	QCryptoAkCipherOptionsRSA *opt,
	181	Error **errp)
	182	{
	183	if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_PKCS1_PADDING) {
	184	int hash_alg;
	185
	186	hash_alg = cryptodev_builtin_get_rsa_hash_algo(virtio_hash_algo, errp);
	187	if (hash_alg < 0) {
	188	return -1;
	189	}
	190	opt->hash_alg = hash_alg;
	191	opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_PKCS1;
	192	return 0;
	193	}
	194
	195	if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_RAW_PADDING) {
	196	opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_RAW;
	197	return 0;
	198	}
	199
	200	error_setg(errp, "Unsupported rsa padding algo: %d", virtio_padding_algo);
	201	return -1;
	202	}
	203
1653a5f3 GA	204	static int cryptodev_builtin_create_cipher_session(
	205	CryptoDevBackendBuiltin *builtin,
	206	CryptoDevBackendSymSessionInfo *sess_info,
	207	Error **errp)
	208	{
	209	int algo;
	210	int mode;
	211	QCryptoCipher *cipher;
	212	int index;
	213	CryptoDevBackendBuiltinSession *sess;
	214
	215	if (sess_info->op_type != VIRTIO_CRYPTO_SYM_OP_CIPHER) {
	216	error_setg(errp, "Unsupported optype :%u", sess_info->op_type);
	217	return -1;
	218	}
	219
	220	index = cryptodev_builtin_get_unused_session_index(builtin);
	221	if (index < 0) {
	222	error_setg(errp, "Total number of sessions created exceeds %u",
	223	MAX_NUM_SESSIONS);
	224	return -1;
	225	}
	226
	227	switch (sess_info->cipher_alg) {
	228	case VIRTIO_CRYPTO_CIPHER_AES_ECB:
465f2fed	229	mode = QCRYPTO_CIPHER_MODE_ECB;
1653a5f3	230	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
465f2fed	231	mode, errp);
1653a5f3 GA	232	if (algo < 0) {
	233	return -1;
	234	}
1653a5f3 GA	235	break;
1653a5f3 GA	236	case VIRTIO_CRYPTO_CIPHER_AES_CBC:
465f2fed	237	mode = QCRYPTO_CIPHER_MODE_CBC;
1653a5f3	238	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
465f2fed	239	mode, errp);
1653a5f3 GA	240	if (algo < 0) {
	241	return -1;
	242	}
1653a5f3 GA	243	break;
1653a5f3 GA	244	case VIRTIO_CRYPTO_CIPHER_AES_CTR:
465f2fed	245	mode = QCRYPTO_CIPHER_MODE_CTR;
1653a5f3	246	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
465f2fed	247	mode, errp);
1653a5f3 GA	248	if (algo < 0) {
	249	return -1;
	250	}
1653a5f3	251	break;
eaa57403 LM	252	case VIRTIO_CRYPTO_CIPHER_AES_XTS:
	253	mode = QCRYPTO_CIPHER_MODE_XTS;
	254	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
	255	mode, errp);
	256	if (algo < 0) {
	257	return -1;
	258	}
	259	break;
48ae36c0 LM	260	case VIRTIO_CRYPTO_CIPHER_3DES_ECB:
	261	mode = QCRYPTO_CIPHER_MODE_ECB;
	262	algo = QCRYPTO_CIPHER_ALG_3DES;
	263	break;
	264	case VIRTIO_CRYPTO_CIPHER_3DES_CBC:
	265	mode = QCRYPTO_CIPHER_MODE_CBC;
	266	algo = QCRYPTO_CIPHER_ALG_3DES;
	267	break;
	268	case VIRTIO_CRYPTO_CIPHER_3DES_CTR:
	269	mode = QCRYPTO_CIPHER_MODE_CTR;
	270	algo = QCRYPTO_CIPHER_ALG_3DES;
	271	break;
1653a5f3 GA	272	default:
	273	error_setg(errp, "Unsupported cipher alg :%u",
	274	sess_info->cipher_alg);
	275	return -1;
	276	}
	277
	278	cipher = qcrypto_cipher_new(algo, mode,
	279	sess_info->cipher_key,
	280	sess_info->key_len,
	281	errp);
	282	if (!cipher) {
	283	return -1;
	284	}
	285
	286	sess = g_new0(CryptoDevBackendBuiltinSession, 1);
	287	sess->cipher = cipher;
	288	sess->direction = sess_info->direction;
	289	sess->type = sess_info->op_type;
	290
	291	builtin->sessions[index] = sess;
	292
	293	return index;
	294	}
	295
0e660a6f ZP	296	static int cryptodev_builtin_create_akcipher_session(
	297	CryptoDevBackendBuiltin *builtin,
	298	CryptoDevBackendAsymSessionInfo *sess_info,
	299	Error **errp)
	300	{
	301	CryptoDevBackendBuiltinSession *sess;
	302	QCryptoAkCipher *akcipher;
	303	int index;
	304	QCryptoAkCipherKeyType type;
	305	QCryptoAkCipherOptions opts;
	306
	307	switch (sess_info->algo) {
	308	case VIRTIO_CRYPTO_AKCIPHER_RSA:
	309	opts.alg = QCRYPTO_AKCIPHER_ALG_RSA;
	310	if (cryptodev_builtin_set_rsa_options(sess_info->u.rsa.padding_algo,
	311	sess_info->u.rsa.hash_algo, &opts.u.rsa, errp) != 0) {
	312	return -1;
	313	}
	314	break;
	315
	316	/* TODO support DSA&ECDSA until qemu crypto framework support these */
	317
	318	default:
	319	error_setg(errp, "Unsupported akcipher alg %u", sess_info->algo);
	320	return -1;
	321	}
	322
	323	switch (sess_info->keytype) {
	324	case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC:
	325	type = QCRYPTO_AKCIPHER_KEY_TYPE_PUBLIC;
	326	break;
	327
	328	case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE:
	329	type = QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE;
	330	break;
	331
	332	default:
	333	error_setg(errp, "Unsupported akcipher keytype %u", sess_info->keytype);
	334	return -1;
	335	}
	336
	337	index = cryptodev_builtin_get_unused_session_index(builtin);
	338	if (index < 0) {
	339	error_setg(errp, "Total number of sessions created exceeds %u",
	340	MAX_NUM_SESSIONS);
	341	return -1;
	342	}
	343
	344	akcipher = qcrypto_akcipher_new(&opts, type, sess_info->key,
	345	sess_info->keylen, errp);
	346	if (!akcipher) {
	347	return -1;
	348	}
	349
	350	sess = g_new0(CryptoDevBackendBuiltinSession, 1);
	351	sess->akcipher = akcipher;
	352
	353	builtin->sessions[index] = sess;
	354
	355	return index;
	356	}
	357
2fda101d	358	static int cryptodev_builtin_create_session(
1653a5f3	359	CryptoDevBackend *backend,
0e660a6f	360	CryptoDevBackendSessionInfo *sess_info,
2fda101d LH	361	uint32_t queue_index,
	362	CryptoDevCompletionFunc cb,
	363	void *opaque)
1653a5f3 GA	364	{
	365	CryptoDevBackendBuiltin *builtin =
	366	CRYPTODEV_BACKEND_BUILTIN(backend);
0e660a6f ZP	367	CryptoDevBackendSymSessionInfo *sym_sess_info;
0e660a6f ZP	368	CryptoDevBackendAsymSessionInfo *asym_sess_info;
2fda101d LH	369	int ret, status;
2fda101d LH	370	Error *local_error = NULL;
1653a5f3 GA	371
	372	switch (sess_info->op_code) {
	373	case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION:
0e660a6f	374	sym_sess_info = &sess_info->u.sym_sess_info;
2fda101d LH	375	ret = cryptodev_builtin_create_cipher_session(
	376	builtin, sym_sess_info, &local_error);
	377	break;
0e660a6f ZP	378
	379	case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION:
	380	asym_sess_info = &sess_info->u.asym_sess_info;
2fda101d LH	381	ret = cryptodev_builtin_create_akcipher_session(
	382	builtin, asym_sess_info, &local_error);
	383	break;
0e660a6f	384
1653a5f3 GA	385	case VIRTIO_CRYPTO_HASH_CREATE_SESSION:
	386	case VIRTIO_CRYPTO_MAC_CREATE_SESSION:
	387	default:
2fda101d	388	error_setg(&local_error, "Unsupported opcode :%" PRIu32 "",
1653a5f3	389	sess_info->op_code);
2fda101d	390	return -VIRTIO_CRYPTO_NOTSUPP;
1653a5f3 GA	391	}
1653a5f3 GA	392
2fda101d LH	393	if (local_error) {
	394	error_report_err(local_error);
	395	}
	396	if (ret < 0) {
	397	status = -VIRTIO_CRYPTO_ERR;
	398	} else {
	399	sess_info->session_id = ret;
	400	status = VIRTIO_CRYPTO_OK;
	401	}
	402	if (cb) {
	403	cb(opaque, status);
	404	}
	405	return 0;
1653a5f3 GA	406	}
1653a5f3 GA	407
0e660a6f	408	static int cryptodev_builtin_close_session(
1653a5f3 GA	409	CryptoDevBackend *backend,
1653a5f3 GA	410	uint64_t session_id,
2fda101d LH	411	uint32_t queue_index,
	412	CryptoDevCompletionFunc cb,
	413	void *opaque)
1653a5f3 GA	414	{
	415	CryptoDevBackendBuiltin *builtin =
	416	CRYPTODEV_BACKEND_BUILTIN(backend);
0e660a6f	417	CryptoDevBackendBuiltinSession *session;
1653a5f3	418
2a340b67	419	assert(session_id < MAX_NUM_SESSIONS && builtin->sessions[session_id]);
1653a5f3	420
0e660a6f ZP	421	session = builtin->sessions[session_id];
	422	if (session->cipher) {
	423	qcrypto_cipher_free(session->cipher);
	424	} else if (session->akcipher) {
	425	qcrypto_akcipher_free(session->akcipher);
	426	}
	427
	428	g_free(session);
1653a5f3	429	builtin->sessions[session_id] = NULL;
2fda101d LH	430	if (cb) {
	431	cb(opaque, VIRTIO_CRYPTO_OK);
	432	}
1653a5f3 GA	433	return 0;
	434	}
	435
	436	static int cryptodev_builtin_sym_operation(
0e660a6f ZP	437	CryptoDevBackendBuiltinSession *sess,
0e660a6f ZP	438	CryptoDevBackendSymOpInfo op_info, Error *errp)
1653a5f3	439	{
1653a5f3 GA	440	int ret;
1653a5f3 GA	441
1653a5f3 GA	442	if (op_info->op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) {
	443	error_setg(errp,
	444	"Algorithm chain is unsupported for cryptdoev-builtin");
	445	return -VIRTIO_CRYPTO_NOTSUPP;
	446	}
	447
50d19cf3 LM	448	if (op_info->iv_len > 0) {
	449	ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv,
	450	op_info->iv_len, errp);
	451	if (ret < 0) {
	452	return -VIRTIO_CRYPTO_ERR;
	453	}
1653a5f3 GA	454	}
	455
	456	if (sess->direction == VIRTIO_CRYPTO_OP_ENCRYPT) {
	457	ret = qcrypto_cipher_encrypt(sess->cipher, op_info->src,
	458	op_info->dst, op_info->src_len, errp);
	459	if (ret < 0) {
	460	return -VIRTIO_CRYPTO_ERR;
	461	}
	462	} else {
	463	ret = qcrypto_cipher_decrypt(sess->cipher, op_info->src,
	464	op_info->dst, op_info->src_len, errp);
	465	if (ret < 0) {
	466	return -VIRTIO_CRYPTO_ERR;
	467	}
	468	}
0e660a6f ZP	469
	470	return VIRTIO_CRYPTO_OK;
	471	}
	472
	473	static int cryptodev_builtin_asym_operation(
	474	CryptoDevBackendBuiltinSession *sess, uint32_t op_code,
	475	CryptoDevBackendAsymOpInfo op_info, Error *errp)
	476	{
	477	int ret;
	478
	479	switch (op_code) {
	480	case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT:
	481	ret = qcrypto_akcipher_encrypt(sess->akcipher,
	482	op_info->src, op_info->src_len,
	483	op_info->dst, op_info->dst_len, errp);
	484	break;
	485
	486	case VIRTIO_CRYPTO_AKCIPHER_DECRYPT:
	487	ret = qcrypto_akcipher_decrypt(sess->akcipher,
	488	op_info->src, op_info->src_len,
	489	op_info->dst, op_info->dst_len, errp);
	490	break;
	491
	492	case VIRTIO_CRYPTO_AKCIPHER_SIGN:
	493	ret = qcrypto_akcipher_sign(sess->akcipher,
	494	op_info->src, op_info->src_len,
	495	op_info->dst, op_info->dst_len, errp);
	496	break;
	497
	498	case VIRTIO_CRYPTO_AKCIPHER_VERIFY:
	499	ret = qcrypto_akcipher_verify(sess->akcipher,
	500	op_info->src, op_info->src_len,
	501	op_info->dst, op_info->dst_len, errp);
	502	break;
	503
	504	default:
	505	return -VIRTIO_CRYPTO_ERR;
	506	}
	507
	508	if (ret < 0) {
	509	if (op_code == VIRTIO_CRYPTO_AKCIPHER_VERIFY) {
	510	return -VIRTIO_CRYPTO_KEY_REJECTED;
	511	}
	512	return -VIRTIO_CRYPTO_ERR;
	513	}
	514
	515	/* Buffer is too short, typically the driver should handle this case */
	516	if (unlikely(ret > op_info->dst_len)) {
	517	if (errp && !*errp) {
	518	error_setg(errp, "dst buffer too short");
	519	}
	520
	521	return -VIRTIO_CRYPTO_ERR;
	522	}
	523
	524	op_info->dst_len = ret;
	525
1653a5f3 GA	526	return VIRTIO_CRYPTO_OK;
	527	}
	528
0e660a6f ZP	529	static int cryptodev_builtin_operation(
	530	CryptoDevBackend *backend,
	531	CryptoDevBackendOpInfo *op_info,
2fda101d LH	532	uint32_t queue_index,
	533	CryptoDevCompletionFunc cb,
	534	void *opaque)
0e660a6f ZP	535	{
	536	CryptoDevBackendBuiltin *builtin =
	537	CRYPTODEV_BACKEND_BUILTIN(backend);
	538	CryptoDevBackendBuiltinSession *sess;
	539	CryptoDevBackendSymOpInfo *sym_op_info;
	540	CryptoDevBackendAsymOpInfo *asym_op_info;
	541	enum CryptoDevBackendAlgType algtype = op_info->algtype;
2fda101d LH	542	int status = -VIRTIO_CRYPTO_ERR;
2fda101d LH	543	Error *local_error = NULL;
0e660a6f ZP	544
	545	if (op_info->session_id >= MAX_NUM_SESSIONS \|\|
	546	builtin->sessions[op_info->session_id] == NULL) {
2fda101d	547	error_setg(&local_error, "Cannot find a valid session id: %" PRIu64 "",
0e660a6f ZP	548	op_info->session_id);
	549	return -VIRTIO_CRYPTO_INVSESS;
	550	}
	551
	552	sess = builtin->sessions[op_info->session_id];
	553	if (algtype == CRYPTODEV_BACKEND_ALG_SYM) {
	554	sym_op_info = op_info->u.sym_op_info;
2fda101d LH	555	status = cryptodev_builtin_sym_operation(sess, sym_op_info,
2fda101d LH	556	&local_error);
0e660a6f ZP	557	} else if (algtype == CRYPTODEV_BACKEND_ALG_ASYM) {
0e660a6f ZP	558	asym_op_info = op_info->u.asym_op_info;
2fda101d LH	559	status = cryptodev_builtin_asym_operation(sess, op_info->op_code,
2fda101d LH	560	asym_op_info, &local_error);
0e660a6f ZP	561	}
0e660a6f ZP	562
2fda101d LH	563	if (local_error) {
	564	error_report_err(local_error);
	565	}
	566	if (cb) {
	567	cb(opaque, status);
	568	}
	569	return 0;
0e660a6f ZP	570	}
0e660a6f ZP	571
1653a5f3 GA	572	static void cryptodev_builtin_cleanup(
	573	CryptoDevBackend *backend,
	574	Error **errp)
	575	{
	576	CryptoDevBackendBuiltin *builtin =
	577	CRYPTODEV_BACKEND_BUILTIN(backend);
	578	size_t i;
	579	int queues = backend->conf.peers.queues;
	580	CryptoDevBackendClient *cc;
	581
	582	for (i = 0; i < MAX_NUM_SESSIONS; i++) {
	583	if (builtin->sessions[i] != NULL) {
2fda101d	584	cryptodev_builtin_close_session(backend, i, 0, NULL, NULL);
1653a5f3 GA	585	}
	586	}
	587
1653a5f3 GA	588	for (i = 0; i < queues; i++) {
	589	cc = backend->conf.peers.ccs[i];
	590	if (cc) {
	591	cryptodev_backend_free_client(cc);
	592	backend->conf.peers.ccs[i] = NULL;
	593	}
	594	}
6138dbda GA	595
6138dbda GA	596	cryptodev_backend_set_ready(backend, false);
1653a5f3 GA	597	}
	598
	599	static void
	600	cryptodev_builtin_class_init(ObjectClass oc, void data)
	601	{
	602	CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_CLASS(oc);
	603
	604	bc->init = cryptodev_builtin_init;
	605	bc->cleanup = cryptodev_builtin_cleanup;
0e660a6f ZP	606	bc->create_session = cryptodev_builtin_create_session;
	607	bc->close_session = cryptodev_builtin_close_session;
	608	bc->do_op = cryptodev_builtin_operation;
1653a5f3 GA	609	}
	610
	611	static const TypeInfo cryptodev_builtin_info = {
	612	.name = TYPE_CRYPTODEV_BACKEND_BUILTIN,
	613	.parent = TYPE_CRYPTODEV_BACKEND,
	614	.class_init = cryptodev_builtin_class_init,
	615	.instance_size = sizeof(CryptoDevBackendBuiltin),
	616	};
	617
	618	static void
	619	cryptodev_builtin_register_types(void)
	620	{
	621	type_register_static(&cryptodev_builtin_info);
	622	}
	623
	624	type_init(cryptodev_builtin_register_types);