/* * 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 2.1 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 "qapi/visitor.h" #include "qemu/config-file.h" #include "qemu/error-report.h" #include "qom/object_interfaces.h" #include "hw/virtio/virtio-crypto.h" static QTAILQ_HEAD(, CryptoDevBackendClient) crypto_clients; CryptoDevBackendClient * cryptodev_backend_new_client(const char *model, const char *name) { CryptoDevBackendClient *cc; cc = g_new0(CryptoDevBackendClient, 1); cc->model = g_strdup(model); if (name) { cc->name = g_strdup(name); } QTAILQ_INSERT_TAIL(&crypto_clients, cc, next); return cc; } void cryptodev_backend_free_client( CryptoDevBackendClient *cc) { QTAILQ_REMOVE(&crypto_clients, cc, next); g_free(cc->name); g_free(cc->model); g_free(cc->info_str); g_free(cc); } void cryptodev_backend_cleanup( CryptoDevBackend *backend, Error **errp) { CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(backend); if (bc->cleanup) { bc->cleanup(backend, errp); } } int cryptodev_backend_create_session( CryptoDevBackend *backend, CryptoDevBackendSessionInfo *sess_info, uint32_t queue_index, CryptoDevCompletionFunc cb, void *opaque) { CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(backend); if (bc->create_session) { return bc->create_session(backend, sess_info, queue_index, cb, opaque); } return -VIRTIO_CRYPTO_NOTSUPP; } int cryptodev_backend_close_session( CryptoDevBackend *backend, uint64_t session_id, uint32_t queue_index, CryptoDevCompletionFunc cb, void *opaque) { CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(backend); if (bc->close_session) { return bc->close_session(backend, session_id, queue_index, cb, opaque); } return -VIRTIO_CRYPTO_NOTSUPP; } static int cryptodev_backend_operation( CryptoDevBackend *backend, CryptoDevBackendOpInfo *op_info, uint32_t queue_index, CryptoDevCompletionFunc cb, void *opaque) { CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(backend); if (bc->do_op) { return bc->do_op(backend, op_info, queue_index, cb, opaque); } return -VIRTIO_CRYPTO_NOTSUPP; } int cryptodev_backend_crypto_operation( CryptoDevBackend *backend, void *opaque1, uint32_t queue_index, CryptoDevCompletionFunc cb, void *opaque2) { VirtIOCryptoReq *req = opaque1; CryptoDevBackendOpInfo *op_info = &req->op_info; enum CryptoDevBackendAlgType algtype = req->flags; if ((algtype != CRYPTODEV_BACKEND_ALG_SYM) && (algtype != CRYPTODEV_BACKEND_ALG_ASYM)) { error_report("Unsupported cryptodev alg type: %" PRIu32 "", algtype); return -VIRTIO_CRYPTO_NOTSUPP; } return cryptodev_backend_operation(backend, op_info, queue_index, cb, opaque2); } static void cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); uint32_t value = backend->conf.peers.queues; visit_type_uint32(v, name, &value, errp); } static void cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); uint32_t value; if (!visit_type_uint32(v, name, &value, errp)) { return; } if (!value) { error_setg(errp, "Property '%s.%s' doesn't take value '%" PRIu32 "'", object_get_typename(obj), name, value); return; } backend->conf.peers.queues = value; } static void cryptodev_backend_complete(UserCreatable *uc, Error **errp) { CryptoDevBackend *backend = CRYPTODEV_BACKEND(uc); CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(uc); if (bc->init) { bc->init(backend, errp); } } void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used) { backend->is_used = used; } bool cryptodev_backend_is_used(CryptoDevBackend *backend) { return backend->is_used; } void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready) { backend->ready = ready; } bool cryptodev_backend_is_ready(CryptoDevBackend *backend) { return backend->ready; } static bool cryptodev_backend_can_be_deleted(UserCreatable *uc) { return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc)); } static void cryptodev_backend_instance_init(Object *obj) { /* Initialize devices' queues property to 1 */ object_property_set_int(obj, "queues", 1, NULL); } static void cryptodev_backend_finalize(Object *obj) { CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); cryptodev_backend_cleanup(backend, NULL); } static void cryptodev_backend_class_init(ObjectClass *oc, void *data) { UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); ucc->complete = cryptodev_backend_complete; ucc->can_be_deleted = cryptodev_backend_can_be_deleted; QTAILQ_INIT(&crypto_clients); object_class_property_add(oc, "queues", "uint32", cryptodev_backend_get_queues, cryptodev_backend_set_queues, NULL, NULL); } static const TypeInfo cryptodev_backend_info = { .name = TYPE_CRYPTODEV_BACKEND, .parent = TYPE_OBJECT, .instance_size = sizeof(CryptoDevBackend), .instance_init = cryptodev_backend_instance_init, .instance_finalize = cryptodev_backend_finalize, .class_size = sizeof(CryptoDevBackendClass), .class_init = cryptodev_backend_class_init, .interfaces = (InterfaceInfo[]) { { TYPE_USER_CREATABLE }, { } } }; static void cryptodev_backend_register_types(void) { type_register_static(&cryptodev_backend_info); } type_init(cryptodev_backend_register_types);