aboutsummaryrefslogtreecommitdiff
path: root/backends/cryptodev.c
blob: ada4ebe78b166f2c78f37ccb97853befab748343 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
/*
 * 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);
    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)
{
    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, "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);
}

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);