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d0ee7a13 GA |
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 | |
0dda001b | 12 | * version 2.1 of the License, or (at your option) any later version. |
d0ee7a13 GA |
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" | |
d0ee7a13 GA |
26 | #include "qapi/error.h" |
27 | #include "qapi/visitor.h" | |
d0ee7a13 GA |
28 | #include "qemu/config-file.h" |
29 | #include "qom/object_interfaces.h" | |
d6634ac0 GA |
30 | #include "hw/virtio/virtio-crypto.h" |
31 | ||
d0ee7a13 GA |
32 | |
33 | static QTAILQ_HEAD(, CryptoDevBackendClient) crypto_clients; | |
34 | ||
35 | ||
36 | CryptoDevBackendClient * | |
37 | cryptodev_backend_new_client(const char *model, | |
38 | const char *name) | |
39 | { | |
40 | CryptoDevBackendClient *cc; | |
41 | ||
b21e2380 | 42 | cc = g_new0(CryptoDevBackendClient, 1); |
d0ee7a13 GA |
43 | cc->model = g_strdup(model); |
44 | if (name) { | |
45 | cc->name = g_strdup(name); | |
46 | } | |
47 | ||
48 | QTAILQ_INSERT_TAIL(&crypto_clients, cc, next); | |
49 | ||
50 | return cc; | |
51 | } | |
52 | ||
53 | void cryptodev_backend_free_client( | |
54 | CryptoDevBackendClient *cc) | |
55 | { | |
56 | QTAILQ_REMOVE(&crypto_clients, cc, next); | |
57 | g_free(cc->name); | |
58 | g_free(cc->model); | |
59 | g_free(cc->info_str); | |
60 | g_free(cc); | |
61 | } | |
62 | ||
63 | void cryptodev_backend_cleanup( | |
64 | CryptoDevBackend *backend, | |
65 | Error **errp) | |
66 | { | |
67 | CryptoDevBackendClass *bc = | |
68 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
69 | ||
70 | if (bc->cleanup) { | |
71 | bc->cleanup(backend, errp); | |
72 | } | |
d0ee7a13 GA |
73 | } |
74 | ||
0e660a6f | 75 | int64_t cryptodev_backend_create_session( |
9e4f86a8 | 76 | CryptoDevBackend *backend, |
0e660a6f | 77 | CryptoDevBackendSessionInfo *sess_info, |
9e4f86a8 GA |
78 | uint32_t queue_index, Error **errp) |
79 | { | |
80 | CryptoDevBackendClass *bc = | |
81 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
82 | ||
83 | if (bc->create_session) { | |
84 | return bc->create_session(backend, sess_info, queue_index, errp); | |
85 | } | |
86 | ||
87 | return -1; | |
88 | } | |
89 | ||
0e660a6f | 90 | int cryptodev_backend_close_session( |
9e4f86a8 GA |
91 | CryptoDevBackend *backend, |
92 | uint64_t session_id, | |
93 | uint32_t queue_index, Error **errp) | |
94 | { | |
95 | CryptoDevBackendClass *bc = | |
96 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
97 | ||
98 | if (bc->close_session) { | |
99 | return bc->close_session(backend, session_id, queue_index, errp); | |
100 | } | |
101 | ||
102 | return -1; | |
103 | } | |
104 | ||
0e660a6f | 105 | static int cryptodev_backend_operation( |
9e4f86a8 | 106 | CryptoDevBackend *backend, |
0e660a6f | 107 | CryptoDevBackendOpInfo *op_info, |
9e4f86a8 GA |
108 | uint32_t queue_index, Error **errp) |
109 | { | |
110 | CryptoDevBackendClass *bc = | |
111 | CRYPTODEV_BACKEND_GET_CLASS(backend); | |
112 | ||
0e660a6f ZP |
113 | if (bc->do_op) { |
114 | return bc->do_op(backend, op_info, queue_index, errp); | |
9e4f86a8 GA |
115 | } |
116 | ||
d6634ac0 GA |
117 | return -VIRTIO_CRYPTO_ERR; |
118 | } | |
119 | ||
120 | int cryptodev_backend_crypto_operation( | |
121 | CryptoDevBackend *backend, | |
122 | void *opaque, | |
123 | uint32_t queue_index, Error **errp) | |
124 | { | |
125 | VirtIOCryptoReq *req = opaque; | |
0e660a6f ZP |
126 | CryptoDevBackendOpInfo *op_info = &req->op_info; |
127 | enum CryptoDevBackendAlgType algtype = req->flags; | |
d6634ac0 | 128 | |
0e660a6f ZP |
129 | if ((algtype != CRYPTODEV_BACKEND_ALG_SYM) |
130 | && (algtype != CRYPTODEV_BACKEND_ALG_ASYM)) { | |
d6634ac0 | 131 | error_setg(errp, "Unsupported cryptodev alg type: %" PRIu32 "", |
0e660a6f ZP |
132 | algtype); |
133 | ||
134 | return -VIRTIO_CRYPTO_NOTSUPP; | |
d6634ac0 GA |
135 | } |
136 | ||
0e660a6f | 137 | return cryptodev_backend_operation(backend, op_info, queue_index, errp); |
9e4f86a8 GA |
138 | } |
139 | ||
d0ee7a13 GA |
140 | static void |
141 | cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name, | |
142 | void *opaque, Error **errp) | |
143 | { | |
144 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); | |
145 | uint32_t value = backend->conf.peers.queues; | |
146 | ||
147 | visit_type_uint32(v, name, &value, errp); | |
148 | } | |
149 | ||
150 | static void | |
151 | cryptodev_backend_set_queues(Object *obj, Visitor *v, const char *name, | |
152 | void *opaque, Error **errp) | |
153 | { | |
154 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); | |
d0ee7a13 GA |
155 | uint32_t value; |
156 | ||
668f62ec | 157 | if (!visit_type_uint32(v, name, &value, errp)) { |
dcfe4805 | 158 | return; |
d0ee7a13 GA |
159 | } |
160 | if (!value) { | |
dcfe4805 MA |
161 | error_setg(errp, "Property '%s.%s' doesn't take value '%" PRIu32 "'", |
162 | object_get_typename(obj), name, value); | |
163 | return; | |
d0ee7a13 GA |
164 | } |
165 | backend->conf.peers.queues = value; | |
d0ee7a13 GA |
166 | } |
167 | ||
168 | static void | |
169 | cryptodev_backend_complete(UserCreatable *uc, Error **errp) | |
170 | { | |
171 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(uc); | |
172 | CryptoDevBackendClass *bc = CRYPTODEV_BACKEND_GET_CLASS(uc); | |
d0ee7a13 GA |
173 | |
174 | if (bc->init) { | |
7dc75edb | 175 | bc->init(backend, errp); |
d0ee7a13 | 176 | } |
d0ee7a13 GA |
177 | } |
178 | ||
46fd1705 GA |
179 | void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used) |
180 | { | |
181 | backend->is_used = used; | |
182 | } | |
183 | ||
184 | bool cryptodev_backend_is_used(CryptoDevBackend *backend) | |
185 | { | |
186 | return backend->is_used; | |
187 | } | |
188 | ||
6138dbda GA |
189 | void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready) |
190 | { | |
191 | backend->ready = ready; | |
192 | } | |
193 | ||
194 | bool cryptodev_backend_is_ready(CryptoDevBackend *backend) | |
195 | { | |
196 | return backend->ready; | |
197 | } | |
198 | ||
46fd1705 | 199 | static bool |
3beacfb9 | 200 | cryptodev_backend_can_be_deleted(UserCreatable *uc) |
46fd1705 GA |
201 | { |
202 | return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc)); | |
203 | } | |
204 | ||
d0ee7a13 GA |
205 | static void cryptodev_backend_instance_init(Object *obj) |
206 | { | |
d0ee7a13 | 207 | /* Initialize devices' queues property to 1 */ |
5325cc34 | 208 | object_property_set_int(obj, "queues", 1, NULL); |
d0ee7a13 GA |
209 | } |
210 | ||
211 | static void cryptodev_backend_finalize(Object *obj) | |
212 | { | |
46fd1705 | 213 | CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj); |
d0ee7a13 | 214 | |
46fd1705 | 215 | cryptodev_backend_cleanup(backend, NULL); |
d0ee7a13 GA |
216 | } |
217 | ||
218 | static void | |
219 | cryptodev_backend_class_init(ObjectClass *oc, void *data) | |
220 | { | |
221 | UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); | |
222 | ||
223 | ucc->complete = cryptodev_backend_complete; | |
46fd1705 | 224 | ucc->can_be_deleted = cryptodev_backend_can_be_deleted; |
d0ee7a13 GA |
225 | |
226 | QTAILQ_INIT(&crypto_clients); | |
1f14e388 EH |
227 | object_class_property_add(oc, "queues", "uint32", |
228 | cryptodev_backend_get_queues, | |
229 | cryptodev_backend_set_queues, | |
230 | NULL, NULL); | |
d0ee7a13 GA |
231 | } |
232 | ||
233 | static const TypeInfo cryptodev_backend_info = { | |
234 | .name = TYPE_CRYPTODEV_BACKEND, | |
235 | .parent = TYPE_OBJECT, | |
236 | .instance_size = sizeof(CryptoDevBackend), | |
237 | .instance_init = cryptodev_backend_instance_init, | |
238 | .instance_finalize = cryptodev_backend_finalize, | |
239 | .class_size = sizeof(CryptoDevBackendClass), | |
240 | .class_init = cryptodev_backend_class_init, | |
241 | .interfaces = (InterfaceInfo[]) { | |
242 | { TYPE_USER_CREATABLE }, | |
243 | { } | |
244 | } | |
245 | }; | |
246 | ||
247 | static void | |
248 | cryptodev_backend_register_types(void) | |
249 | { | |
250 | type_register_static(&cryptodev_backend_info); | |
251 | } | |
252 | ||
253 | type_init(cryptodev_backend_register_types); |