| /* |
| * 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/>. |
| * |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "sysemu/cryptodev.h" |
| #include "qapi/error.h" |
| #include "qapi/visitor.h" |
| #include "qemu/config-file.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_malloc0(sizeof(CryptoDevBackendClient)); |
| 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); |
| } |
| } |
| |
| int64_t cryptodev_backend_sym_create_session( |
| CryptoDevBackend *backend, |
| CryptoDevBackendSymSessionInfo *sess_info, |
| uint32_t queue_index, Error **errp) |
| { |
| CryptoDevBackendClass *bc = |
| CRYPTODEV_BACKEND_GET_CLASS(backend); |
| |
| if (bc->create_session) { |
| return bc->create_session(backend, sess_info, queue_index, errp); |
| } |
| |
| return -1; |
| } |
| |
| int cryptodev_backend_sym_close_session( |
| CryptoDevBackend *backend, |
| uint64_t session_id, |
| uint32_t queue_index, Error **errp) |
| { |
| CryptoDevBackendClass *bc = |
| CRYPTODEV_BACKEND_GET_CLASS(backend); |
| |
| if (bc->close_session) { |
| return bc->close_session(backend, session_id, queue_index, errp); |
| } |
| |
| return -1; |
| } |
| |
| static int cryptodev_backend_sym_operation( |
| CryptoDevBackend *backend, |
| CryptoDevBackendSymOpInfo *op_info, |
| uint32_t queue_index, Error **errp) |
| { |
| CryptoDevBackendClass *bc = |
| CRYPTODEV_BACKEND_GET_CLASS(backend); |
| |
| if (bc->do_sym_op) { |
| return bc->do_sym_op(backend, op_info, queue_index, errp); |
| } |
| |
| return -VIRTIO_CRYPTO_ERR; |
| } |
| |
| int cryptodev_backend_crypto_operation( |
| CryptoDevBackend *backend, |
| void *opaque, |
| uint32_t queue_index, Error **errp) |
| { |
| VirtIOCryptoReq *req = opaque; |
| |
| if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { |
| CryptoDevBackendSymOpInfo *op_info; |
| op_info = req->u.sym_op_info; |
| |
| return cryptodev_backend_sym_operation(backend, |
| op_info, queue_index, errp); |
| } else { |
| error_setg(errp, "Unsupported cryptodev alg type: %" PRIu32 "", |
| req->flags); |
| return -VIRTIO_CRYPTO_NOTSUPP; |
| } |
| |
| return -VIRTIO_CRYPTO_ERR; |
| } |
| |
| 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); |
| 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 |
| 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) |
| { |
| object_property_add(obj, "queues", "uint32", |
| cryptodev_backend_get_queues, |
| cryptodev_backend_set_queues, |
| NULL, NULL); |
| /* Initialize devices' queues property to 1 */ |
| object_property_set_int(obj, 1, "queues", 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); |
| } |
| |
| 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); |