cryptodev backend interface is used to realize the active work for virtual crypto device.
This patch only add the framework, doesn't include specific operations. Signed-off-by: Gonglei <arei.gong...@huawei.com> --- backends/Makefile.objs | 2 + backends/cryptodev.c | 175 +++++++++++++++++++++++++++++++++++++++++++++ include/sysemu/cryptodev.h | 145 +++++++++++++++++++++++++++++++++++++ 3 files changed, 322 insertions(+) create mode 100644 backends/cryptodev.c create mode 100644 include/sysemu/cryptodev.h diff --git a/backends/Makefile.objs b/backends/Makefile.objs index 31a3a89..55bd43d 100644 --- a/backends/Makefile.objs +++ b/backends/Makefile.objs @@ -9,3 +9,5 @@ common-obj-$(CONFIG_TPM) += tpm.o common-obj-y += hostmem.o hostmem-ram.o common-obj-$(CONFIG_LINUX) += hostmem-file.o + +common-obj-y += cryptodev.o diff --git a/backends/cryptodev.c b/backends/cryptodev.c new file mode 100644 index 0000000..a15904b --- /dev/null +++ b/backends/cryptodev.c @@ -0,0 +1,175 @@ +/* + * QEMU Crypto Device Implement + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Gonglei <arei.gong...@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/>. + * + */ + +#include "qemu/osdep.h" +#include "sysemu/cryptodev.h" +#include "hw/boards.h" +#include "qapi/error.h" +#include "qapi/visitor.h" +#include "qapi-types.h" +#include "qapi-visit.h" +#include "qemu/config-file.h" +#include "qom/object_interfaces.h" + +static QTAILQ_HEAD(, QCryptoCryptoDevBackendClientState) crypto_clients; + + +QCryptoCryptoDevBackendClientState * +qcrypto_cryptodev_backend_new_client(const char *model, + const char *name) +{ + QCryptoCryptoDevBackendClientState *cc; + + cc = g_malloc0(sizeof(QCryptoCryptoDevBackendClientState)); + cc->model = g_strdup(model); + if (name) { + cc->name = g_strdup(name); + } + + QTAILQ_INSERT_TAIL(&crypto_clients, cc, next); + + return cc; +} + +void qcrypto_cryptodev_backend_free_client( + QCryptoCryptoDevBackendClientState *cc) +{ + QTAILQ_REMOVE(&crypto_clients, cc, next); + g_free(cc->name); + g_free(cc->model); + g_free(cc); +} + +void qcrypto_cryptodev_backend_cleanup( + QCryptoCryptoDevBackend *backend, + Error **errp) +{ + QCryptoCryptoDevBackendClass *bc = + QCRYPTO_CRYPTODEV_BACKEND_GET_CLASS(backend); + + if (bc->cleanup) { + bc->cleanup(backend, errp); + } + + backend->ready = 0; +} + +static void +qcrypto_cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + QCryptoCryptoDevBackend *backend = QCRYPTO_CRYPTODEV_BACKEND(obj); + uint32_t value = backend->conf.peers.queues; + + visit_type_uint32(v, name, &value, errp); +} + +static void +qcrypto_cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + QCryptoCryptoDevBackend *backend = QCRYPTO_CRYPTODEV_BACKEND(obj); + Error *local_err = NULL; + uint32_t value; + + visit_type_uint32(v, name, &value, &local_err); + if (local_err) { + goto out; + } + if (!value) { + error_setg(&local_err, "Property '%s.%s' doesn't take value '%" + PRIu32 "'", object_get_typename(obj), name, value); + goto out; + } + backend->conf.peers.queues = value; +out: + error_propagate(errp, local_err); +} + +static void +qcrypto_cryptodev_backend_complete(UserCreatable *uc, Error **errp) +{ + QCryptoCryptoDevBackend *backend = QCRYPTO_CRYPTODEV_BACKEND(uc); + QCryptoCryptoDevBackendClass *bc = QCRYPTO_CRYPTODEV_BACKEND_GET_CLASS(uc); + Error *local_err = NULL; + + if (bc->init) { + bc->init(backend, &local_err); + if (local_err) { + goto out; + } + } + backend->ready = 1; + return; + +out: + backend->ready = 0; + error_propagate(errp, local_err); +} + +static void qcrypto_cryptodev_backend_instance_init(Object *obj) +{ + object_property_add(obj, "queues", "int", + qcrypto_cryptodev_backend_get_queues, + qcrypto_cryptodev_backend_set_queues, + NULL, NULL, NULL); + /* Initialize devices' queues property to 1 */ + object_property_set_int(obj, 1, "queues", NULL); +} + +static void qcrypto_cryptodev_backend_finalize(Object *obj) +{ + +} + +static void +qcrypto_cryptodev_backend_class_init(ObjectClass *oc, void *data) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + + ucc->complete = qcrypto_cryptodev_backend_complete; + + QTAILQ_INIT(&crypto_clients); +} + +static const TypeInfo qcrypto_cryptodev_backend_info = { + .name = TYPE_QCRYPTO_CRYPTODEV_BACKEND, + .parent = TYPE_OBJECT, + .instance_size = sizeof(QCryptoCryptoDevBackend), + .instance_init = qcrypto_cryptodev_backend_instance_init, + .instance_finalize = qcrypto_cryptodev_backend_finalize, + .class_size = sizeof(QCryptoCryptoDevBackendClass), + .class_init = qcrypto_cryptodev_backend_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_USER_CREATABLE }, + { } + } +}; + +static void +qcrypto_cryptodev_backend_register_types(void) +{ + type_register_static(&qcrypto_cryptodev_backend_info); +} + +type_init(qcrypto_cryptodev_backend_register_types); diff --git a/include/sysemu/cryptodev.h b/include/sysemu/cryptodev.h new file mode 100644 index 0000000..cc3c3be --- /dev/null +++ b/include/sysemu/cryptodev.h @@ -0,0 +1,145 @@ +/* + * QEMU Crypto Device Implement + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Gonglei <arei.gong...@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 QCRYPTO_CRYPTODEV_H +#define QCRYPTO_CRYPTODEV_H + +#include "qom/object.h" +#include "qemu-common.h" + +/** + * QCryptoCryptoDevBackend: + * + * The QCryptoCryptoDevBackend object is an interface + * for different cryptodev backends, which provides crypto + * operation wrapper. + * + */ + +#define TYPE_QCRYPTO_CRYPTODEV_BACKEND "cryptodev-backend" + +#define QCRYPTO_CRYPTODEV_BACKEND(obj) \ + OBJECT_CHECK(QCryptoCryptoDevBackend, \ + (obj), TYPE_QCRYPTO_CRYPTODEV_BACKEND) +#define QCRYPTO_CRYPTODEV_BACKEND_GET_CLASS(obj) \ + OBJECT_GET_CLASS(QCryptoCryptoDevBackendClass, \ + (obj), TYPE_QCRYPTO_CRYPTODEV_BACKEND) +#define QCRYPTO_CRYPTODEV_BACKEND_CLASS(klass) \ + OBJECT_CLASS_CHECK(QCryptoCryptoDevBackendClass, \ + (klass), TYPE_QCRYPTO_CRYPTODEV_BACKEND) + + +#define MAX_CRYPTO_QUEUE_NUM 64 + +typedef struct QCryptoCryptoDevBackendConf QCryptoCryptoDevBackendConf; +typedef struct QCryptoCryptoDevBackendPeers QCryptoCryptoDevBackendPeers; +typedef struct QCryptoCryptoDevBackendClientState + QCryptoCryptoDevBackendClientState; +typedef struct QCryptoCryptoDevBackend QCryptoCryptoDevBackend; + + +typedef struct QCryptoCryptoDevBackendClass { + ObjectClass parent_class; + + void (*init)(QCryptoCryptoDevBackend *backend, Error **errp); + void (*cleanup)(QCryptoCryptoDevBackend *backend, Error **errp); +} QCryptoCryptoDevBackendClass; + + +struct QCryptoCryptoDevBackendClientState { + char *model; + char *name; + char info_str[128]; + unsigned int queue_index; + QTAILQ_ENTRY(QCryptoCryptoDevBackendClientState) next; +}; + +struct QCryptoCryptoDevBackendPeers { + QCryptoCryptoDevBackendClientState *ccs[MAX_CRYPTO_QUEUE_NUM]; + uint32_t queues; +}; + +struct QCryptoCryptoDevBackendConf { + QCryptoCryptoDevBackendPeers 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 asym_algo; + uint32_t kdf_algo; + uint32_t aead_algo; + uint32_t primitive_algo; +}; + +struct QCryptoCryptoDevBackend { + Object parent_obj; + + int ready; + QCryptoCryptoDevBackendConf conf; +}; + +/** + * qcrypto_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 mode @mode. + * + * The returned object must be released with + * qcrypto_cryptodev_backend_free_client() when no + * longer required + * + * Returns: a new cryptodev backend client object + */ +QCryptoCryptoDevBackendClientState * +qcrypto_cryptodev_backend_new_client(const char *model, + const char *name); +/** + * qcrypto_cryptodev_backend_free_client: + * @cc: the cryptodev backend client object + * + * Release the memory associated with @cc that + * was previously allocated by qcrypto_cryptodev_backend_new_client() + */ +void qcrypto_cryptodev_backend_free_client( + QCryptoCryptoDevBackendClientState *cc); + +/** + * qcrypto_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 qcrypto_cryptodev_backend_cleanup( + QCryptoCryptoDevBackend *backend, + Error **errp); + +#endif /* QCRYPTO_CRYPTODEV_H */ -- 1.7.12.4
