[mirror_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();
    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;
    QCryptodevBackendAlgType 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 == QCRYPTODEV_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 == QCRYPTODEV_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
3f478371	75	cc = cryptodev_backend_new_client();
1653a5f3 GA	76	cc->info_str = g_strdup_printf("cryptodev-builtin0");
1653a5f3 GA	77	cc->queue_index = 0;
14c9fd16	78	cc->type = QCRYPTODEV_BACKEND_TYPE_BUILTIN;
1653a5f3 GA	79	backend->conf.peers.ccs[0] = cc;
	80
	81	backend->conf.crypto_services =
	82	1u << VIRTIO_CRYPTO_SERVICE_CIPHER \|
	83	1u << VIRTIO_CRYPTO_SERVICE_HASH \|
0e660a6f ZP	84	1u << VIRTIO_CRYPTO_SERVICE_MAC \|
0e660a6f ZP	85	1u << VIRTIO_CRYPTO_SERVICE_AKCIPHER;
1653a5f3 GA	86	backend->conf.cipher_algo_l = 1u << VIRTIO_CRYPTO_CIPHER_AES_CBC;
1653a5f3 GA	87	backend->conf.hash_algo = 1u << VIRTIO_CRYPTO_HASH_SHA1;
0e660a6f	88	backend->conf.akcipher_algo = 1u << VIRTIO_CRYPTO_AKCIPHER_RSA;
1653a5f3 GA	89	/*
	90	* Set the Maximum length of crypto request.
	91	* Why this value? Just avoid to overflow when
	92	* memory allocation for each crypto request.
	93	*/
0e660a6f	94	backend->conf.max_size = LONG_MAX - sizeof(CryptoDevBackendOpInfo);
1653a5f3 GA	95	backend->conf.max_cipher_key_len = CRYPTODEV_BUITLIN_MAX_CIPHER_KEY_LEN;
1653a5f3 GA	96	backend->conf.max_auth_key_len = CRYPTODEV_BUITLIN_MAX_AUTH_KEY_LEN;
6138dbda GA	97
6138dbda GA	98	cryptodev_backend_set_ready(backend, true);
1653a5f3 GA	99	}
	100
	101	static int
	102	cryptodev_builtin_get_unused_session_index(
	103	CryptoDevBackendBuiltin *builtin)
	104	{
	105	size_t i;
	106
	107	for (i = 0; i < MAX_NUM_SESSIONS; i++) {
	108	if (builtin->sessions[i] == NULL) {
	109	return i;
	110	}
	111	}
	112
	113	return -1;
	114	}
	115
465f2fed LM	116	#define AES_KEYSIZE_128 16
	117	#define AES_KEYSIZE_192 24
	118	#define AES_KEYSIZE_256 32
	119	#define AES_KEYSIZE_128_XTS AES_KEYSIZE_256
	120	#define AES_KEYSIZE_256_XTS 64
	121
1653a5f3	122	static int
465f2fed	123	cryptodev_builtin_get_aes_algo(uint32_t key_len, int mode, Error **errp)
1653a5f3 GA	124	{
	125	int algo;
	126
465f2fed	127	if (key_len == AES_KEYSIZE_128) {
1653a5f3	128	algo = QCRYPTO_CIPHER_ALG_AES_128;
465f2fed	129	} else if (key_len == AES_KEYSIZE_192) {
1653a5f3	130	algo = QCRYPTO_CIPHER_ALG_AES_192;
465f2fed LM	131	} else if (key_len == AES_KEYSIZE_256) { /* equals AES_KEYSIZE_128_XTS */
	132	if (mode == QCRYPTO_CIPHER_MODE_XTS) {
	133	algo = QCRYPTO_CIPHER_ALG_AES_128;
	134	} else {
	135	algo = QCRYPTO_CIPHER_ALG_AES_256;
	136	}
	137	} else if (key_len == AES_KEYSIZE_256_XTS) {
	138	if (mode == QCRYPTO_CIPHER_MODE_XTS) {
	139	algo = QCRYPTO_CIPHER_ALG_AES_256;
	140	} else {
	141	goto err;
	142	}
1653a5f3	143	} else {
465f2fed	144	goto err;
1653a5f3 GA	145	}
	146
	147	return algo;
465f2fed LM	148
	149	err:
	150	error_setg(errp, "Unsupported key length :%u", key_len);
	151	return -1;
1653a5f3 GA	152	}
1653a5f3 GA	153
0e660a6f ZP	154	static int cryptodev_builtin_get_rsa_hash_algo(
	155	int virtio_rsa_hash, Error **errp)
	156	{
	157	switch (virtio_rsa_hash) {
	158	case VIRTIO_CRYPTO_RSA_MD5:
	159	return QCRYPTO_HASH_ALG_MD5;
	160
	161	case VIRTIO_CRYPTO_RSA_SHA1:
	162	return QCRYPTO_HASH_ALG_SHA1;
	163
	164	case VIRTIO_CRYPTO_RSA_SHA256:
	165	return QCRYPTO_HASH_ALG_SHA256;
	166
	167	case VIRTIO_CRYPTO_RSA_SHA512:
	168	return QCRYPTO_HASH_ALG_SHA512;
	169
	170	default:
	171	error_setg(errp, "Unsupported rsa hash algo: %d", virtio_rsa_hash);
	172	return -1;
	173	}
	174	}
	175
	176	static int cryptodev_builtin_set_rsa_options(
	177	int virtio_padding_algo,
	178	int virtio_hash_algo,
	179	QCryptoAkCipherOptionsRSA *opt,
	180	Error **errp)
	181	{
	182	if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_PKCS1_PADDING) {
	183	int hash_alg;
	184
	185	hash_alg = cryptodev_builtin_get_rsa_hash_algo(virtio_hash_algo, errp);
	186	if (hash_alg < 0) {
	187	return -1;
	188	}
	189	opt->hash_alg = hash_alg;
	190	opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_PKCS1;
	191	return 0;
	192	}
	193
	194	if (virtio_padding_algo == VIRTIO_CRYPTO_RSA_RAW_PADDING) {
	195	opt->padding_alg = QCRYPTO_RSA_PADDING_ALG_RAW;
	196	return 0;
	197	}
	198
	199	error_setg(errp, "Unsupported rsa padding algo: %d", virtio_padding_algo);
	200	return -1;
	201	}
	202
1653a5f3 GA	203	static int cryptodev_builtin_create_cipher_session(
	204	CryptoDevBackendBuiltin *builtin,
	205	CryptoDevBackendSymSessionInfo *sess_info,
	206	Error **errp)
	207	{
	208	int algo;
	209	int mode;
	210	QCryptoCipher *cipher;
	211	int index;
	212	CryptoDevBackendBuiltinSession *sess;
	213
	214	if (sess_info->op_type != VIRTIO_CRYPTO_SYM_OP_CIPHER) {
	215	error_setg(errp, "Unsupported optype :%u", sess_info->op_type);
	216	return -1;
	217	}
	218
	219	index = cryptodev_builtin_get_unused_session_index(builtin);
	220	if (index < 0) {
	221	error_setg(errp, "Total number of sessions created exceeds %u",
	222	MAX_NUM_SESSIONS);
	223	return -1;
	224	}
	225
	226	switch (sess_info->cipher_alg) {
	227	case VIRTIO_CRYPTO_CIPHER_AES_ECB:
465f2fed	228	mode = QCRYPTO_CIPHER_MODE_ECB;
1653a5f3	229	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
465f2fed	230	mode, errp);
1653a5f3 GA	231	if (algo < 0) {
	232	return -1;
	233	}
1653a5f3 GA	234	break;
1653a5f3 GA	235	case VIRTIO_CRYPTO_CIPHER_AES_CBC:
465f2fed	236	mode = QCRYPTO_CIPHER_MODE_CBC;
1653a5f3	237	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
465f2fed	238	mode, errp);
1653a5f3 GA	239	if (algo < 0) {
	240	return -1;
	241	}
1653a5f3 GA	242	break;
1653a5f3 GA	243	case VIRTIO_CRYPTO_CIPHER_AES_CTR:
465f2fed	244	mode = QCRYPTO_CIPHER_MODE_CTR;
1653a5f3	245	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
465f2fed	246	mode, errp);
1653a5f3 GA	247	if (algo < 0) {
	248	return -1;
	249	}
1653a5f3	250	break;
eaa57403 LM	251	case VIRTIO_CRYPTO_CIPHER_AES_XTS:
	252	mode = QCRYPTO_CIPHER_MODE_XTS;
	253	algo = cryptodev_builtin_get_aes_algo(sess_info->key_len,
	254	mode, errp);
	255	if (algo < 0) {
	256	return -1;
	257	}
	258	break;
48ae36c0 LM	259	case VIRTIO_CRYPTO_CIPHER_3DES_ECB:
	260	mode = QCRYPTO_CIPHER_MODE_ECB;
	261	algo = QCRYPTO_CIPHER_ALG_3DES;
	262	break;
	263	case VIRTIO_CRYPTO_CIPHER_3DES_CBC:
	264	mode = QCRYPTO_CIPHER_MODE_CBC;
	265	algo = QCRYPTO_CIPHER_ALG_3DES;
	266	break;
	267	case VIRTIO_CRYPTO_CIPHER_3DES_CTR:
	268	mode = QCRYPTO_CIPHER_MODE_CTR;
	269	algo = QCRYPTO_CIPHER_ALG_3DES;
	270	break;
1653a5f3 GA	271	default:
	272	error_setg(errp, "Unsupported cipher alg :%u",
	273	sess_info->cipher_alg);
	274	return -1;
	275	}
	276
	277	cipher = qcrypto_cipher_new(algo, mode,
	278	sess_info->cipher_key,
	279	sess_info->key_len,
	280	errp);
	281	if (!cipher) {
	282	return -1;
	283	}
	284
	285	sess = g_new0(CryptoDevBackendBuiltinSession, 1);
	286	sess->cipher = cipher;
	287	sess->direction = sess_info->direction;
	288	sess->type = sess_info->op_type;
	289
	290	builtin->sessions[index] = sess;
	291
	292	return index;
	293	}
	294
0e660a6f ZP	295	static int cryptodev_builtin_create_akcipher_session(
	296	CryptoDevBackendBuiltin *builtin,
	297	CryptoDevBackendAsymSessionInfo *sess_info,
	298	Error **errp)
	299	{
	300	CryptoDevBackendBuiltinSession *sess;
	301	QCryptoAkCipher *akcipher;
	302	int index;
	303	QCryptoAkCipherKeyType type;
	304	QCryptoAkCipherOptions opts;
	305
	306	switch (sess_info->algo) {
	307	case VIRTIO_CRYPTO_AKCIPHER_RSA:
	308	opts.alg = QCRYPTO_AKCIPHER_ALG_RSA;
	309	if (cryptodev_builtin_set_rsa_options(sess_info->u.rsa.padding_algo,
	310	sess_info->u.rsa.hash_algo, &opts.u.rsa, errp) != 0) {
	311	return -1;
	312	}
	313	break;
	314
	315	/* TODO support DSA&ECDSA until qemu crypto framework support these */
	316
	317	default:
	318	error_setg(errp, "Unsupported akcipher alg %u", sess_info->algo);
	319	return -1;
	320	}
	321
	322	switch (sess_info->keytype) {
	323	case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC:
	324	type = QCRYPTO_AKCIPHER_KEY_TYPE_PUBLIC;
	325	break;
	326
	327	case VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE:
	328	type = QCRYPTO_AKCIPHER_KEY_TYPE_PRIVATE;
	329	break;
	330
	331	default:
	332	error_setg(errp, "Unsupported akcipher keytype %u", sess_info->keytype);
	333	return -1;
	334	}
	335
	336	index = cryptodev_builtin_get_unused_session_index(builtin);
	337	if (index < 0) {
	338	error_setg(errp, "Total number of sessions created exceeds %u",
	339	MAX_NUM_SESSIONS);
	340	return -1;
	341	}
	342
	343	akcipher = qcrypto_akcipher_new(&opts, type, sess_info->key,
	344	sess_info->keylen, errp);
	345	if (!akcipher) {
	346	return -1;
	347	}
	348
	349	sess = g_new0(CryptoDevBackendBuiltinSession, 1);
	350	sess->akcipher = akcipher;
	351
	352	builtin->sessions[index] = sess;
	353
	354	return index;
	355	}
	356
2fda101d	357	static int cryptodev_builtin_create_session(
1653a5f3	358	CryptoDevBackend *backend,
0e660a6f	359	CryptoDevBackendSessionInfo *sess_info,
2fda101d LH	360	uint32_t queue_index,
	361	CryptoDevCompletionFunc cb,
	362	void *opaque)
1653a5f3 GA	363	{
	364	CryptoDevBackendBuiltin *builtin =
	365	CRYPTODEV_BACKEND_BUILTIN(backend);
0e660a6f ZP	366	CryptoDevBackendSymSessionInfo *sym_sess_info;
0e660a6f ZP	367	CryptoDevBackendAsymSessionInfo *asym_sess_info;
2fda101d LH	368	int ret, status;
2fda101d LH	369	Error *local_error = NULL;
1653a5f3 GA	370
	371	switch (sess_info->op_code) {
	372	case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION:
0e660a6f	373	sym_sess_info = &sess_info->u.sym_sess_info;
2fda101d LH	374	ret = cryptodev_builtin_create_cipher_session(
	375	builtin, sym_sess_info, &local_error);
	376	break;
0e660a6f ZP	377
	378	case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION:
	379	asym_sess_info = &sess_info->u.asym_sess_info;
2fda101d LH	380	ret = cryptodev_builtin_create_akcipher_session(
	381	builtin, asym_sess_info, &local_error);
	382	break;
0e660a6f	383
1653a5f3 GA	384	case VIRTIO_CRYPTO_HASH_CREATE_SESSION:
	385	case VIRTIO_CRYPTO_MAC_CREATE_SESSION:
	386	default:
2fda101d	387	error_setg(&local_error, "Unsupported opcode :%" PRIu32 "",
1653a5f3	388	sess_info->op_code);
2fda101d	389	return -VIRTIO_CRYPTO_NOTSUPP;
1653a5f3 GA	390	}
1653a5f3 GA	391
2fda101d LH	392	if (local_error) {
	393	error_report_err(local_error);
	394	}
	395	if (ret < 0) {
	396	status = -VIRTIO_CRYPTO_ERR;
	397	} else {
	398	sess_info->session_id = ret;
	399	status = VIRTIO_CRYPTO_OK;
	400	}
	401	if (cb) {
	402	cb(opaque, status);
	403	}
	404	return 0;
1653a5f3 GA	405	}
1653a5f3 GA	406
0e660a6f	407	static int cryptodev_builtin_close_session(
1653a5f3 GA	408	CryptoDevBackend *backend,
1653a5f3 GA	409	uint64_t session_id,
2fda101d LH	410	uint32_t queue_index,
	411	CryptoDevCompletionFunc cb,
	412	void *opaque)
1653a5f3 GA	413	{
	414	CryptoDevBackendBuiltin *builtin =
	415	CRYPTODEV_BACKEND_BUILTIN(backend);
0e660a6f	416	CryptoDevBackendBuiltinSession *session;
1653a5f3	417
2a340b67	418	assert(session_id < MAX_NUM_SESSIONS && builtin->sessions[session_id]);
1653a5f3	419
0e660a6f ZP	420	session = builtin->sessions[session_id];
	421	if (session->cipher) {
	422	qcrypto_cipher_free(session->cipher);
	423	} else if (session->akcipher) {
	424	qcrypto_akcipher_free(session->akcipher);
	425	}
	426
	427	g_free(session);
1653a5f3	428	builtin->sessions[session_id] = NULL;
2fda101d LH	429	if (cb) {
	430	cb(opaque, VIRTIO_CRYPTO_OK);
	431	}
1653a5f3 GA	432	return 0;
	433	}
	434
	435	static int cryptodev_builtin_sym_operation(
0e660a6f ZP	436	CryptoDevBackendBuiltinSession *sess,
0e660a6f ZP	437	CryptoDevBackendSymOpInfo op_info, Error *errp)
1653a5f3	438	{
1653a5f3 GA	439	int ret;
1653a5f3 GA	440
1653a5f3 GA	441	if (op_info->op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) {
	442	error_setg(errp,
	443	"Algorithm chain is unsupported for cryptdoev-builtin");
	444	return -VIRTIO_CRYPTO_NOTSUPP;
	445	}
	446
50d19cf3 LM	447	if (op_info->iv_len > 0) {
	448	ret = qcrypto_cipher_setiv(sess->cipher, op_info->iv,
	449	op_info->iv_len, errp);
	450	if (ret < 0) {
	451	return -VIRTIO_CRYPTO_ERR;
	452	}
1653a5f3 GA	453	}
	454
	455	if (sess->direction == VIRTIO_CRYPTO_OP_ENCRYPT) {
	456	ret = qcrypto_cipher_encrypt(sess->cipher, op_info->src,
	457	op_info->dst, op_info->src_len, errp);
	458	if (ret < 0) {
	459	return -VIRTIO_CRYPTO_ERR;
	460	}
	461	} else {
	462	ret = qcrypto_cipher_decrypt(sess->cipher, op_info->src,
	463	op_info->dst, op_info->src_len, errp);
	464	if (ret < 0) {
	465	return -VIRTIO_CRYPTO_ERR;
	466	}
	467	}
0e660a6f ZP	468
	469	return VIRTIO_CRYPTO_OK;
	470	}
	471
	472	static int cryptodev_builtin_asym_operation(
	473	CryptoDevBackendBuiltinSession *sess, uint32_t op_code,
	474	CryptoDevBackendAsymOpInfo op_info, Error *errp)
	475	{
	476	int ret;
	477
	478	switch (op_code) {
	479	case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT:
	480	ret = qcrypto_akcipher_encrypt(sess->akcipher,
	481	op_info->src, op_info->src_len,
	482	op_info->dst, op_info->dst_len, errp);
	483	break;
	484
	485	case VIRTIO_CRYPTO_AKCIPHER_DECRYPT:
	486	ret = qcrypto_akcipher_decrypt(sess->akcipher,
	487	op_info->src, op_info->src_len,
	488	op_info->dst, op_info->dst_len, errp);
	489	break;
	490
	491	case VIRTIO_CRYPTO_AKCIPHER_SIGN:
	492	ret = qcrypto_akcipher_sign(sess->akcipher,
	493	op_info->src, op_info->src_len,
	494	op_info->dst, op_info->dst_len, errp);
	495	break;
	496
	497	case VIRTIO_CRYPTO_AKCIPHER_VERIFY:
	498	ret = qcrypto_akcipher_verify(sess->akcipher,
	499	op_info->src, op_info->src_len,
	500	op_info->dst, op_info->dst_len, errp);
	501	break;
	502
	503	default:
	504	return -VIRTIO_CRYPTO_ERR;
	505	}
	506
	507	if (ret < 0) {
	508	if (op_code == VIRTIO_CRYPTO_AKCIPHER_VERIFY) {
	509	return -VIRTIO_CRYPTO_KEY_REJECTED;
	510	}
	511	return -VIRTIO_CRYPTO_ERR;
	512	}
	513
	514	/* Buffer is too short, typically the driver should handle this case */
	515	if (unlikely(ret > op_info->dst_len)) {
	516	if (errp && !*errp) {
	517	error_setg(errp, "dst buffer too short");
	518	}
	519
	520	return -VIRTIO_CRYPTO_ERR;
	521	}
	522
	523	op_info->dst_len = ret;
	524
1653a5f3 GA	525	return VIRTIO_CRYPTO_OK;
	526	}
	527
0e660a6f ZP	528	static int cryptodev_builtin_operation(
	529	CryptoDevBackend *backend,
	530	CryptoDevBackendOpInfo *op_info,
2fda101d LH	531	uint32_t queue_index,
	532	CryptoDevCompletionFunc cb,
	533	void *opaque)
0e660a6f ZP	534	{
	535	CryptoDevBackendBuiltin *builtin =
	536	CRYPTODEV_BACKEND_BUILTIN(backend);
	537	CryptoDevBackendBuiltinSession *sess;
	538	CryptoDevBackendSymOpInfo *sym_op_info;
	539	CryptoDevBackendAsymOpInfo *asym_op_info;
999c789f	540	QCryptodevBackendAlgType algtype = op_info->algtype;
2fda101d LH	541	int status = -VIRTIO_CRYPTO_ERR;
2fda101d LH	542	Error *local_error = NULL;
0e660a6f ZP	543
	544	if (op_info->session_id >= MAX_NUM_SESSIONS \|\|
	545	builtin->sessions[op_info->session_id] == NULL) {
2fda101d	546	error_setg(&local_error, "Cannot find a valid session id: %" PRIu64 "",
0e660a6f ZP	547	op_info->session_id);
	548	return -VIRTIO_CRYPTO_INVSESS;
	549	}
	550
	551	sess = builtin->sessions[op_info->session_id];
999c789f	552	if (algtype == QCRYPTODEV_BACKEND_ALG_SYM) {
0e660a6f	553	sym_op_info = op_info->u.sym_op_info;
2fda101d LH	554	status = cryptodev_builtin_sym_operation(sess, sym_op_info,
2fda101d LH	555	&local_error);
999c789f	556	} else if (algtype == QCRYPTODEV_BACKEND_ALG_ASYM) {
0e660a6f	557	asym_op_info = op_info->u.asym_op_info;
2fda101d LH	558	status = cryptodev_builtin_asym_operation(sess, op_info->op_code,
2fda101d LH	559	asym_op_info, &local_error);
0e660a6f ZP	560	}
0e660a6f ZP	561
2fda101d LH	562	if (local_error) {
	563	error_report_err(local_error);
	564	}
	565	if (cb) {
	566	cb(opaque, status);
	567	}
	568	return 0;
0e660a6f ZP	569	}
0e660a6f ZP	570
1653a5f3 GA	571	static void cryptodev_builtin_cleanup(
	572	CryptoDevBackend *backend,
	573	Error **errp)
	574	{
	575	CryptoDevBackendBuiltin *builtin =
	576	CRYPTODEV_BACKEND_BUILTIN(backend);
	577	size_t i;
	578	int queues = backend->conf.peers.queues;
	579	CryptoDevBackendClient *cc;
	580
	581	for (i = 0; i < MAX_NUM_SESSIONS; i++) {
	582	if (builtin->sessions[i] != NULL) {
2fda101d	583	cryptodev_builtin_close_session(backend, i, 0, NULL, NULL);
1653a5f3 GA	584	}
	585	}
	586
1653a5f3 GA	587	for (i = 0; i < queues; i++) {
	588	cc = backend->conf.peers.ccs[i];
	589	if (cc) {
	590	cryptodev_backend_free_client(cc);
	591	backend->conf.peers.ccs[i] = NULL;
	592	}
	593	}
6138dbda GA	594
6138dbda GA	595	cryptodev_backend_set_ready(backend, false);
1653a5f3 GA	596	}
	597
	598	static void
	599	cryptodev_builtin_class_init(ObjectClass oc, void data)
	600	{
	601	CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_CLASS(oc);
	602
	603	bc->init = cryptodev_builtin_init;
	604	bc->cleanup = cryptodev_builtin_cleanup;
0e660a6f ZP	605	bc->create_session = cryptodev_builtin_create_session;
	606	bc->close_session = cryptodev_builtin_close_session;
	607	bc->do_op = cryptodev_builtin_operation;
1653a5f3 GA	608	}
	609
	610	static const TypeInfo cryptodev_builtin_info = {
	611	.name = TYPE_CRYPTODEV_BACKEND_BUILTIN,
	612	.parent = TYPE_CRYPTODEV_BACKEND,
	613	.class_init = cryptodev_builtin_class_init,
	614	.instance_size = sizeof(CryptoDevBackendBuiltin),
	615	};
	616
	617	static void
	618	cryptodev_builtin_register_types(void)
	619	{
	620	type_register_static(&cryptodev_builtin_info);
	621	}
	622
	623	type_init(cryptodev_builtin_register_types);