256 lines
6.7 KiB
C
256 lines
6.7 KiB
C
/*
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* QEMU Crypto Device Implementation
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*
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* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
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*
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* Authors:
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* Gonglei <arei.gonglei@huawei.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "qemu/osdep.h"
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#include "sysemu/cryptodev.h"
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#include "qapi/error.h"
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#include "qapi/visitor.h"
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#include "qemu/config-file.h"
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#include "qom/object_interfaces.h"
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#include "hw/virtio/virtio-crypto.h"
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static QTAILQ_HEAD(, CryptoDevBackendClient) crypto_clients;
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CryptoDevBackendClient *
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cryptodev_backend_new_client(const char *model,
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const char *name)
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{
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CryptoDevBackendClient *cc;
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cc = g_new0(CryptoDevBackendClient, 1);
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cc->model = g_strdup(model);
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if (name) {
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cc->name = g_strdup(name);
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}
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QTAILQ_INSERT_TAIL(&crypto_clients, cc, next);
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return cc;
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}
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void cryptodev_backend_free_client(
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CryptoDevBackendClient *cc)
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{
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QTAILQ_REMOVE(&crypto_clients, cc, next);
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g_free(cc->name);
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g_free(cc->model);
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g_free(cc->info_str);
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g_free(cc);
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}
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void cryptodev_backend_cleanup(
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CryptoDevBackend *backend,
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Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->cleanup) {
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bc->cleanup(backend, errp);
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}
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}
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int64_t cryptodev_backend_sym_create_session(
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CryptoDevBackend *backend,
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CryptoDevBackendSymSessionInfo *sess_info,
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uint32_t queue_index, Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->create_session) {
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return bc->create_session(backend, sess_info, queue_index, errp);
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}
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return -1;
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}
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int cryptodev_backend_sym_close_session(
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CryptoDevBackend *backend,
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uint64_t session_id,
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uint32_t queue_index, Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->close_session) {
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return bc->close_session(backend, session_id, queue_index, errp);
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}
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return -1;
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}
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static int cryptodev_backend_sym_operation(
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CryptoDevBackend *backend,
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CryptoDevBackendSymOpInfo *op_info,
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uint32_t queue_index, Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->do_sym_op) {
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return bc->do_sym_op(backend, op_info, queue_index, errp);
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}
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return -VIRTIO_CRYPTO_ERR;
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}
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int cryptodev_backend_crypto_operation(
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CryptoDevBackend *backend,
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void *opaque,
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uint32_t queue_index, Error **errp)
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{
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VirtIOCryptoReq *req = opaque;
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if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) {
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CryptoDevBackendSymOpInfo *op_info;
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op_info = req->u.sym_op_info;
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return cryptodev_backend_sym_operation(backend,
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op_info, queue_index, errp);
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} else {
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error_setg(errp, "Unsupported cryptodev alg type: %" PRIu32 "",
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req->flags);
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return -VIRTIO_CRYPTO_NOTSUPP;
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}
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return -VIRTIO_CRYPTO_ERR;
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}
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static void
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cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
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uint32_t value = backend->conf.peers.queues;
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visit_type_uint32(v, name, &value, errp);
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}
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static void
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cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
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uint32_t value;
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if (!visit_type_uint32(v, name, &value, errp)) {
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return;
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}
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if (!value) {
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error_setg(errp, "Property '%s.%s' doesn't take value '%" PRIu32 "'",
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object_get_typename(obj), name, value);
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return;
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}
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backend->conf.peers.queues = value;
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}
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static void
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cryptodev_backend_complete(UserCreatable *uc, Error **errp)
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{
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CryptoDevBackend *backend = CRYPTODEV_BACKEND(uc);
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CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(uc);
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if (bc->init) {
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bc->init(backend, errp);
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}
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}
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void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used)
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{
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backend->is_used = used;
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}
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bool cryptodev_backend_is_used(CryptoDevBackend *backend)
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{
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return backend->is_used;
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}
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void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready)
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{
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backend->ready = ready;
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}
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bool cryptodev_backend_is_ready(CryptoDevBackend *backend)
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{
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return backend->ready;
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}
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static bool
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cryptodev_backend_can_be_deleted(UserCreatable *uc)
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{
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return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc));
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}
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static void cryptodev_backend_instance_init(Object *obj)
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{
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/* Initialize devices' queues property to 1 */
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object_property_set_int(obj, "queues", 1, NULL);
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}
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static void cryptodev_backend_finalize(Object *obj)
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{
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CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
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cryptodev_backend_cleanup(backend, NULL);
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}
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static void
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cryptodev_backend_class_init(ObjectClass *oc, void *data)
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{
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UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
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ucc->complete = cryptodev_backend_complete;
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ucc->can_be_deleted = cryptodev_backend_can_be_deleted;
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QTAILQ_INIT(&crypto_clients);
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object_class_property_add(oc, "queues", "uint32",
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cryptodev_backend_get_queues,
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cryptodev_backend_set_queues,
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NULL, NULL);
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}
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static const TypeInfo cryptodev_backend_info = {
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.name = TYPE_CRYPTODEV_BACKEND,
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.parent = TYPE_OBJECT,
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.instance_size = sizeof(CryptoDevBackend),
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.instance_init = cryptodev_backend_instance_init,
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.instance_finalize = cryptodev_backend_finalize,
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.class_size = sizeof(CryptoDevBackendClass),
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.class_init = cryptodev_backend_class_init,
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.interfaces = (InterfaceInfo[]) {
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{ TYPE_USER_CREATABLE },
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{ }
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}
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};
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static void
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cryptodev_backend_register_types(void)
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{
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type_register_static(&cryptodev_backend_info);
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}
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type_init(cryptodev_backend_register_types);
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