cryptodev.c 6.98 KB
Newer Older
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
/*
 * 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 "hw/boards.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "qapi-types.h"
#include "qapi-visit.h"
#include "qemu/config-file.h"
#include "qom/object_interfaces.h"
33 34
#include "hw/virtio/virtio-crypto.h"

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

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);
    }
}

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
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;
}

108
static int cryptodev_backend_sym_operation(
109 110 111 112 113 114 115 116 117 118 119
                 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);
    }

120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
    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;
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
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);
    Error *local_err = NULL;

    if (bc->init) {
        bc->init(backend, &local_err);
        if (local_err) {
            goto out;
        }
    }
Gonglei's avatar
Gonglei committed
190

191 192 193 194 195 196
    return;

out:
    error_propagate(errp, local_err);
}

197 198 199 200 201 202 203 204 205 206
void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used)
{
    backend->is_used = used;
}

bool cryptodev_backend_is_used(CryptoDevBackend *backend)
{
    return backend->is_used;
}

Gonglei's avatar
Gonglei committed
207 208 209 210 211 212 213 214 215 216
void cryptodev_backend_set_ready(CryptoDevBackend *backend, bool ready)
{
    backend->ready = ready;
}

bool cryptodev_backend_is_ready(CryptoDevBackend *backend)
{
    return backend->ready;
}

217 218 219 220 221 222
static bool
cryptodev_backend_can_be_deleted(UserCreatable *uc, Error **errp)
{
    return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc));
}

223 224 225 226 227 228 229 230 231 232 233 234
static void cryptodev_backend_instance_init(Object *obj)
{
    object_property_add(obj, "queues", "int",
                          cryptodev_backend_get_queues,
                          cryptodev_backend_set_queues,
                          NULL, NULL, NULL);
    /* Initialize devices' queues property to 1 */
    object_property_set_int(obj, 1, "queues", NULL);
}

static void cryptodev_backend_finalize(Object *obj)
{
235
    CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
236

237
    cryptodev_backend_cleanup(backend, NULL);
238 239 240 241 242 243 244 245
}

static void
cryptodev_backend_class_init(ObjectClass *oc, void *data)
{
    UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);

    ucc->complete = cryptodev_backend_complete;
246
    ucc->can_be_deleted = cryptodev_backend_can_be_deleted;
247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271

    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);