Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Crypto Device Implementation |
| 3 | * |
| 4 | * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. |
| 5 | * |
| 6 | * Authors: |
| 7 | * Gonglei <arei.gonglei@huawei.com> |
| 8 | * |
| 9 | * This library is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU Lesser General Public |
| 11 | * License as published by the Free Software Foundation; either |
| 12 | * version 2 of the License, or (at your option) any later version. |
| 13 | * |
| 14 | * This library is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * Lesser General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Lesser General Public |
| 20 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include "qemu/osdep.h" |
| 25 | #include "sysemu/cryptodev.h" |
| 26 | #include "hw/boards.h" |
| 27 | #include "qapi/error.h" |
| 28 | #include "qapi/visitor.h" |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 29 | #include "qemu/config-file.h" |
| 30 | #include "qom/object_interfaces.h" |
Gonglei | d6634ac | 2016-10-28 16:33:29 +0800 | [diff] [blame] | 31 | #include "hw/virtio/virtio-crypto.h" |
| 32 | |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 33 | |
| 34 | static QTAILQ_HEAD(, CryptoDevBackendClient) crypto_clients; |
| 35 | |
| 36 | |
| 37 | CryptoDevBackendClient * |
| 38 | cryptodev_backend_new_client(const char *model, |
| 39 | const char *name) |
| 40 | { |
| 41 | CryptoDevBackendClient *cc; |
| 42 | |
| 43 | cc = g_malloc0(sizeof(CryptoDevBackendClient)); |
| 44 | cc->model = g_strdup(model); |
| 45 | if (name) { |
| 46 | cc->name = g_strdup(name); |
| 47 | } |
| 48 | |
| 49 | QTAILQ_INSERT_TAIL(&crypto_clients, cc, next); |
| 50 | |
| 51 | return cc; |
| 52 | } |
| 53 | |
| 54 | void cryptodev_backend_free_client( |
| 55 | CryptoDevBackendClient *cc) |
| 56 | { |
| 57 | QTAILQ_REMOVE(&crypto_clients, cc, next); |
| 58 | g_free(cc->name); |
| 59 | g_free(cc->model); |
| 60 | g_free(cc->info_str); |
| 61 | g_free(cc); |
| 62 | } |
| 63 | |
| 64 | void cryptodev_backend_cleanup( |
| 65 | CryptoDevBackend *backend, |
| 66 | Error **errp) |
| 67 | { |
| 68 | CryptoDevBackendClass *bc = |
| 69 | CRYPTODEV_BACKEND_GET_CLASS(backend); |
| 70 | |
| 71 | if (bc->cleanup) { |
| 72 | bc->cleanup(backend, errp); |
| 73 | } |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 74 | } |
| 75 | |
Gonglei | 9e4f86a | 2016-10-28 16:33:21 +0800 | [diff] [blame] | 76 | int64_t cryptodev_backend_sym_create_session( |
| 77 | CryptoDevBackend *backend, |
| 78 | CryptoDevBackendSymSessionInfo *sess_info, |
| 79 | uint32_t queue_index, Error **errp) |
| 80 | { |
| 81 | CryptoDevBackendClass *bc = |
| 82 | CRYPTODEV_BACKEND_GET_CLASS(backend); |
| 83 | |
| 84 | if (bc->create_session) { |
| 85 | return bc->create_session(backend, sess_info, queue_index, errp); |
| 86 | } |
| 87 | |
| 88 | return -1; |
| 89 | } |
| 90 | |
| 91 | int cryptodev_backend_sym_close_session( |
| 92 | CryptoDevBackend *backend, |
| 93 | uint64_t session_id, |
| 94 | uint32_t queue_index, Error **errp) |
| 95 | { |
| 96 | CryptoDevBackendClass *bc = |
| 97 | CRYPTODEV_BACKEND_GET_CLASS(backend); |
| 98 | |
| 99 | if (bc->close_session) { |
| 100 | return bc->close_session(backend, session_id, queue_index, errp); |
| 101 | } |
| 102 | |
| 103 | return -1; |
| 104 | } |
| 105 | |
Gonglei | d6634ac | 2016-10-28 16:33:29 +0800 | [diff] [blame] | 106 | static int cryptodev_backend_sym_operation( |
Gonglei | 9e4f86a | 2016-10-28 16:33:21 +0800 | [diff] [blame] | 107 | CryptoDevBackend *backend, |
| 108 | CryptoDevBackendSymOpInfo *op_info, |
| 109 | uint32_t queue_index, Error **errp) |
| 110 | { |
| 111 | CryptoDevBackendClass *bc = |
| 112 | CRYPTODEV_BACKEND_GET_CLASS(backend); |
| 113 | |
| 114 | if (bc->do_sym_op) { |
| 115 | return bc->do_sym_op(backend, op_info, queue_index, errp); |
| 116 | } |
| 117 | |
Gonglei | d6634ac | 2016-10-28 16:33:29 +0800 | [diff] [blame] | 118 | return -VIRTIO_CRYPTO_ERR; |
| 119 | } |
| 120 | |
| 121 | int cryptodev_backend_crypto_operation( |
| 122 | CryptoDevBackend *backend, |
| 123 | void *opaque, |
| 124 | uint32_t queue_index, Error **errp) |
| 125 | { |
| 126 | VirtIOCryptoReq *req = opaque; |
| 127 | |
| 128 | if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { |
| 129 | CryptoDevBackendSymOpInfo *op_info; |
| 130 | op_info = req->u.sym_op_info; |
| 131 | |
| 132 | return cryptodev_backend_sym_operation(backend, |
| 133 | op_info, queue_index, errp); |
| 134 | } else { |
| 135 | error_setg(errp, "Unsupported cryptodev alg type: %" PRIu32 "", |
| 136 | req->flags); |
| 137 | return -VIRTIO_CRYPTO_NOTSUPP; |
| 138 | } |
| 139 | |
| 140 | return -VIRTIO_CRYPTO_ERR; |
Gonglei | 9e4f86a | 2016-10-28 16:33:21 +0800 | [diff] [blame] | 141 | } |
| 142 | |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 143 | static void |
| 144 | cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name, |
| 145 | void *opaque, Error **errp) |
| 146 | { |
| 147 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); |
| 148 | uint32_t value = backend->conf.peers.queues; |
| 149 | |
| 150 | visit_type_uint32(v, name, &value, errp); |
| 151 | } |
| 152 | |
| 153 | static void |
| 154 | cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name, |
| 155 | void *opaque, Error **errp) |
| 156 | { |
| 157 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); |
| 158 | Error *local_err = NULL; |
| 159 | uint32_t value; |
| 160 | |
| 161 | visit_type_uint32(v, name, &value, &local_err); |
| 162 | if (local_err) { |
| 163 | goto out; |
| 164 | } |
| 165 | if (!value) { |
| 166 | error_setg(&local_err, "Property '%s.%s' doesn't take value '%" |
| 167 | PRIu32 "'", object_get_typename(obj), name, value); |
| 168 | goto out; |
| 169 | } |
| 170 | backend->conf.peers.queues = value; |
| 171 | out: |
| 172 | error_propagate(errp, local_err); |
| 173 | } |
| 174 | |
| 175 | static void |
| 176 | cryptodev_backend_complete(UserCreatable *uc, Error **errp) |
| 177 | { |
| 178 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(uc); |
| 179 | CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(uc); |
| 180 | Error *local_err = NULL; |
| 181 | |
| 182 | if (bc->init) { |
| 183 | bc->init(backend, &local_err); |
| 184 | if (local_err) { |
| 185 | goto out; |
| 186 | } |
| 187 | } |
Gonglei | 6138dbd | 2016-12-22 11:12:39 +0800 | [diff] [blame] | 188 | |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 189 | return; |
| 190 | |
| 191 | out: |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 192 | error_propagate(errp, local_err); |
| 193 | } |
| 194 | |
Gonglei | 46fd170 | 2016-12-22 11:12:38 +0800 | [diff] [blame] | 195 | void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used) |
| 196 | { |
| 197 | backend->is_used = used; |
| 198 | } |
| 199 | |
| 200 | bool cryptodev_backend_is_used(CryptoDevBackend *backend) |
| 201 | { |
| 202 | return backend->is_used; |
| 203 | } |
| 204 | |
Gonglei | 6138dbd | 2016-12-22 11:12:39 +0800 | [diff] [blame] | 205 | void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready) |
| 206 | { |
| 207 | backend->ready = ready; |
| 208 | } |
| 209 | |
| 210 | bool cryptodev_backend_is_ready(CryptoDevBackend *backend) |
| 211 | { |
| 212 | return backend->ready; |
| 213 | } |
| 214 | |
Gonglei | 46fd170 | 2016-12-22 11:12:38 +0800 | [diff] [blame] | 215 | static bool |
Eduardo Habkost | 3beacfb | 2017-08-29 19:03:37 -0300 | [diff] [blame] | 216 | cryptodev_backend_can_be_deleted(UserCreatable *uc) |
Gonglei | 46fd170 | 2016-12-22 11:12:38 +0800 | [diff] [blame] | 217 | { |
| 218 | return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc)); |
| 219 | } |
| 220 | |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 221 | static void cryptodev_backend_instance_init(Object *obj) |
| 222 | { |
Marc-André Lureau | 1e507bb | 2017-06-07 20:36:06 +0400 | [diff] [blame] | 223 | object_property_add(obj, "queues", "uint32", |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 224 | cryptodev_backend_get_queues, |
| 225 | cryptodev_backend_set_queues, |
| 226 | NULL, NULL, NULL); |
| 227 | /* Initialize devices' queues property to 1 */ |
| 228 | object_property_set_int(obj, 1, "queues", NULL); |
| 229 | } |
| 230 | |
| 231 | static void cryptodev_backend_finalize(Object *obj) |
| 232 | { |
Gonglei | 46fd170 | 2016-12-22 11:12:38 +0800 | [diff] [blame] | 233 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 234 | |
Gonglei | 46fd170 | 2016-12-22 11:12:38 +0800 | [diff] [blame] | 235 | cryptodev_backend_cleanup(backend, NULL); |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 236 | } |
| 237 | |
| 238 | static void |
| 239 | cryptodev_backend_class_init(ObjectClass *oc, void *data) |
| 240 | { |
| 241 | UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); |
| 242 | |
| 243 | ucc->complete = cryptodev_backend_complete; |
Gonglei | 46fd170 | 2016-12-22 11:12:38 +0800 | [diff] [blame] | 244 | ucc->can_be_deleted = cryptodev_backend_can_be_deleted; |
Gonglei | d0ee7a1 | 2016-10-28 16:33:20 +0800 | [diff] [blame] | 245 | |
| 246 | QTAILQ_INIT(&crypto_clients); |
| 247 | } |
| 248 | |
| 249 | static const TypeInfo cryptodev_backend_info = { |
| 250 | .name = TYPE_CRYPTODEV_BACKEND, |
| 251 | .parent = TYPE_OBJECT, |
| 252 | .instance_size = sizeof(CryptoDevBackend), |
| 253 | .instance_init = cryptodev_backend_instance_init, |
| 254 | .instance_finalize = cryptodev_backend_finalize, |
| 255 | .class_size = sizeof(CryptoDevBackendClass), |
| 256 | .class_init = cryptodev_backend_class_init, |
| 257 | .interfaces = (InterfaceInfo[]) { |
| 258 | { TYPE_USER_CREATABLE }, |
| 259 | { } |
| 260 | } |
| 261 | }; |
| 262 | |
| 263 | static void |
| 264 | cryptodev_backend_register_types(void) |
| 265 | { |
| 266 | type_register_static(&cryptodev_backend_info); |
| 267 | } |
| 268 | |
| 269 | type_init(cryptodev_backend_register_types); |