341 lines
10 KiB
C
341 lines
10 KiB
C
/*
|
|
* QEMU Crypto Device Implementation
|
|
*
|
|
* 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 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/>.
|
|
*
|
|
*/
|
|
#ifndef CRYPTODEV_H
|
|
#define CRYPTODEV_H
|
|
|
|
#include "qom/object.h"
|
|
#include "qemu-common.h"
|
|
|
|
/**
|
|
* CryptoDevBackend:
|
|
*
|
|
* The CryptoDevBackend object is an interface
|
|
* for different cryptodev backends, which provides crypto
|
|
* operation wrapper.
|
|
*
|
|
*/
|
|
|
|
#define TYPE_CRYPTODEV_BACKEND "cryptodev-backend"
|
|
|
|
#define CRYPTODEV_BACKEND(obj) \
|
|
OBJECT_CHECK(CryptoDevBackend, \
|
|
(obj), TYPE_CRYPTODEV_BACKEND)
|
|
#define CRYPTODEV_BACKEND_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(CryptoDevBackendClass, \
|
|
(obj), TYPE_CRYPTODEV_BACKEND)
|
|
#define CRYPTODEV_BACKEND_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(CryptoDevBackendClass, \
|
|
(klass), TYPE_CRYPTODEV_BACKEND)
|
|
|
|
|
|
#define MAX_CRYPTO_QUEUE_NUM 64
|
|
|
|
typedef struct CryptoDevBackendConf CryptoDevBackendConf;
|
|
typedef struct CryptoDevBackendPeers CryptoDevBackendPeers;
|
|
typedef struct CryptoDevBackendClient
|
|
CryptoDevBackendClient;
|
|
typedef struct CryptoDevBackend CryptoDevBackend;
|
|
|
|
enum CryptoDevBackendAlgType {
|
|
CRYPTODEV_BACKEND_ALG_SYM,
|
|
CRYPTODEV_BACKEND_ALG__MAX,
|
|
};
|
|
|
|
/**
|
|
* CryptoDevBackendSymSessionInfo:
|
|
*
|
|
* @op_code: operation code (refer to virtio_crypto.h)
|
|
* @cipher_alg: algorithm type of CIPHER
|
|
* @key_len: byte length of cipher key
|
|
* @hash_alg: algorithm type of HASH/MAC
|
|
* @hash_result_len: byte length of HASH operation result
|
|
* @auth_key_len: byte length of authenticated key
|
|
* @add_len: byte length of additional authenticated data
|
|
* @op_type: operation type (refer to virtio_crypto.h)
|
|
* @direction: encryption or direction for CIPHER
|
|
* @hash_mode: HASH mode for HASH operation (refer to virtio_crypto.h)
|
|
* @alg_chain_order: order of algorithm chaining (CIPHER then HASH,
|
|
* or HASH then CIPHER)
|
|
* @cipher_key: point to a key of CIPHER
|
|
* @auth_key: point to an authenticated key of MAC
|
|
*
|
|
*/
|
|
typedef struct CryptoDevBackendSymSessionInfo {
|
|
/* corresponding with virtio crypto spec */
|
|
uint32_t op_code;
|
|
uint32_t cipher_alg;
|
|
uint32_t key_len;
|
|
uint32_t hash_alg;
|
|
uint32_t hash_result_len;
|
|
uint32_t auth_key_len;
|
|
uint32_t add_len;
|
|
uint8_t op_type;
|
|
uint8_t direction;
|
|
uint8_t hash_mode;
|
|
uint8_t alg_chain_order;
|
|
uint8_t *cipher_key;
|
|
uint8_t *auth_key;
|
|
} CryptoDevBackendSymSessionInfo;
|
|
|
|
/**
|
|
* CryptoDevBackendSymOpInfo:
|
|
*
|
|
* @session_id: session index which was previously
|
|
* created by cryptodev_backend_sym_create_session()
|
|
* @aad_len: byte length of additional authenticated data
|
|
* @iv_len: byte length of initialization vector or counter
|
|
* @src_len: byte length of source data
|
|
* @dst_len: byte length of destination data
|
|
* @digest_result_len: byte length of hash digest result
|
|
* @hash_start_src_offset: Starting point for hash processing, specified
|
|
* as number of bytes from start of packet in source data, only used for
|
|
* algorithm chain
|
|
* @cipher_start_src_offset: Starting point for cipher processing, specified
|
|
* as number of bytes from start of packet in source data, only used for
|
|
* algorithm chain
|
|
* @len_to_hash: byte length of source data on which the hash
|
|
* operation will be computed, only used for algorithm chain
|
|
* @len_to_cipher: byte length of source data on which the cipher
|
|
* operation will be computed, only used for algorithm chain
|
|
* @op_type: operation type (refer to virtio_crypto.h)
|
|
* @iv: point to the initialization vector or counter
|
|
* @src: point to the source data
|
|
* @dst: point to the destination data
|
|
* @aad_data: point to the additional authenticated data
|
|
* @digest_result: point to the digest result data
|
|
* @data[0]: point to the extensional memory by one memory allocation
|
|
*
|
|
*/
|
|
typedef struct CryptoDevBackendSymOpInfo {
|
|
uint64_t session_id;
|
|
uint32_t aad_len;
|
|
uint32_t iv_len;
|
|
uint32_t src_len;
|
|
uint32_t dst_len;
|
|
uint32_t digest_result_len;
|
|
uint32_t hash_start_src_offset;
|
|
uint32_t cipher_start_src_offset;
|
|
uint32_t len_to_hash;
|
|
uint32_t len_to_cipher;
|
|
uint8_t op_type;
|
|
uint8_t *iv;
|
|
uint8_t *src;
|
|
uint8_t *dst;
|
|
uint8_t *aad_data;
|
|
uint8_t *digest_result;
|
|
uint8_t data[0];
|
|
} CryptoDevBackendSymOpInfo;
|
|
|
|
typedef struct CryptoDevBackendClass {
|
|
ObjectClass parent_class;
|
|
|
|
void (*init)(CryptoDevBackend *backend, Error **errp);
|
|
void (*cleanup)(CryptoDevBackend *backend, Error **errp);
|
|
|
|
int64_t (*create_session)(CryptoDevBackend *backend,
|
|
CryptoDevBackendSymSessionInfo *sess_info,
|
|
uint32_t queue_index, Error **errp);
|
|
int (*close_session)(CryptoDevBackend *backend,
|
|
uint64_t session_id,
|
|
uint32_t queue_index, Error **errp);
|
|
int (*do_sym_op)(CryptoDevBackend *backend,
|
|
CryptoDevBackendSymOpInfo *op_info,
|
|
uint32_t queue_index, Error **errp);
|
|
} CryptoDevBackendClass;
|
|
|
|
|
|
struct CryptoDevBackendClient {
|
|
char *model;
|
|
char *name;
|
|
char *info_str;
|
|
unsigned int queue_index;
|
|
QTAILQ_ENTRY(CryptoDevBackendClient) next;
|
|
};
|
|
|
|
struct CryptoDevBackendPeers {
|
|
CryptoDevBackendClient *ccs[MAX_CRYPTO_QUEUE_NUM];
|
|
uint32_t queues;
|
|
};
|
|
|
|
struct CryptoDevBackendConf {
|
|
CryptoDevBackendPeers peers;
|
|
|
|
/* Supported service mask */
|
|
uint32_t crypto_services;
|
|
|
|
/* Detailed algorithms mask */
|
|
uint32_t cipher_algo_l;
|
|
uint32_t cipher_algo_h;
|
|
uint32_t hash_algo;
|
|
uint32_t mac_algo_l;
|
|
uint32_t mac_algo_h;
|
|
uint32_t aead_algo;
|
|
/* Maximum length of cipher key */
|
|
uint32_t max_cipher_key_len;
|
|
/* Maximum length of authenticated key */
|
|
uint32_t max_auth_key_len;
|
|
/* Maximum size of each crypto request's content */
|
|
uint64_t max_size;
|
|
};
|
|
|
|
struct CryptoDevBackend {
|
|
Object parent_obj;
|
|
|
|
bool ready;
|
|
/* Tag the cryptodev backend is used by virtio-crypto or not */
|
|
bool is_used;
|
|
CryptoDevBackendConf conf;
|
|
};
|
|
|
|
/**
|
|
* cryptodev_backend_new_client:
|
|
* @model: the cryptodev backend model
|
|
* @name: the cryptodev backend name, can be NULL
|
|
*
|
|
* Creates a new cryptodev backend client object
|
|
* with the @name in the model @model.
|
|
*
|
|
* The returned object must be released with
|
|
* cryptodev_backend_free_client() when no
|
|
* longer required
|
|
*
|
|
* Returns: a new cryptodev backend client object
|
|
*/
|
|
CryptoDevBackendClient *
|
|
cryptodev_backend_new_client(const char *model,
|
|
const char *name);
|
|
/**
|
|
* cryptodev_backend_free_client:
|
|
* @cc: the cryptodev backend client object
|
|
*
|
|
* Release the memory associated with @cc that
|
|
* was previously allocated by cryptodev_backend_new_client()
|
|
*/
|
|
void cryptodev_backend_free_client(
|
|
CryptoDevBackendClient *cc);
|
|
|
|
/**
|
|
* cryptodev_backend_cleanup:
|
|
* @backend: the cryptodev backend object
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Clean the resouce associated with @backend that realizaed
|
|
* by the specific backend's init() callback
|
|
*/
|
|
void cryptodev_backend_cleanup(
|
|
CryptoDevBackend *backend,
|
|
Error **errp);
|
|
|
|
/**
|
|
* cryptodev_backend_sym_create_session:
|
|
* @backend: the cryptodev backend object
|
|
* @sess_info: parameters needed by session creating
|
|
* @queue_index: queue index of cryptodev backend client
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Create a session for symmetric algorithms
|
|
*
|
|
* Returns: session id on success, or -1 on error
|
|
*/
|
|
int64_t cryptodev_backend_sym_create_session(
|
|
CryptoDevBackend *backend,
|
|
CryptoDevBackendSymSessionInfo *sess_info,
|
|
uint32_t queue_index, Error **errp);
|
|
|
|
/**
|
|
* cryptodev_backend_sym_close_session:
|
|
* @backend: the cryptodev backend object
|
|
* @session_id: the session id
|
|
* @queue_index: queue index of cryptodev backend client
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Close a session for symmetric algorithms which was previously
|
|
* created by cryptodev_backend_sym_create_session()
|
|
*
|
|
* Returns: 0 on success, or Negative on error
|
|
*/
|
|
int cryptodev_backend_sym_close_session(
|
|
CryptoDevBackend *backend,
|
|
uint64_t session_id,
|
|
uint32_t queue_index, Error **errp);
|
|
|
|
/**
|
|
* cryptodev_backend_crypto_operation:
|
|
* @backend: the cryptodev backend object
|
|
* @opaque: pointer to a VirtIOCryptoReq object
|
|
* @queue_index: queue index of cryptodev backend client
|
|
* @errp: pointer to a NULL-initialized error object
|
|
*
|
|
* Do crypto operation, such as encryption and
|
|
* decryption
|
|
*
|
|
* Returns: VIRTIO_CRYPTO_OK on success,
|
|
* or -VIRTIO_CRYPTO_* on error
|
|
*/
|
|
int cryptodev_backend_crypto_operation(
|
|
CryptoDevBackend *backend,
|
|
void *opaque,
|
|
uint32_t queue_index, Error **errp);
|
|
|
|
/**
|
|
* cryptodev_backend_set_used:
|
|
* @backend: the cryptodev backend object
|
|
* @used: ture or false
|
|
*
|
|
* Set the cryptodev backend is used by virtio-crypto or not
|
|
*/
|
|
void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used);
|
|
|
|
/**
|
|
* cryptodev_backend_is_used:
|
|
* @backend: the cryptodev backend object
|
|
*
|
|
* Return the status that the cryptodev backend is used
|
|
* by virtio-crypto or not
|
|
*
|
|
* Returns: true on used, or false on not used
|
|
*/
|
|
bool cryptodev_backend_is_used(CryptoDevBackend *backend);
|
|
|
|
/**
|
|
* cryptodev_backend_set_ready:
|
|
* @backend: the cryptodev backend object
|
|
* @ready: ture or false
|
|
*
|
|
* Set the cryptodev backend is ready or not, which is called
|
|
* by the children of the cryptodev banckend interface.
|
|
*/
|
|
void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready);
|
|
|
|
/**
|
|
* cryptodev_backend_is_ready:
|
|
* @backend: the cryptodev backend object
|
|
*
|
|
* Return the status that the cryptodev backend is ready or not
|
|
*
|
|
* Returns: true on ready, or false on not ready
|
|
*/
|
|
bool cryptodev_backend_is_ready(CryptoDevBackend *backend);
|
|
|
|
#endif /* CRYPTODEV_H */
|