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virtio-crypto: avoid one cryptodev device is used by multiple virtio crypto devices 

Add the check condition for cryptodev device in order
to avoid one cryptodev device is used by multiple
virtio crypto devices.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Gonglei 2016-12-22 11:12:41 +08:00 committed by Michael S. Tsirkin
parent 305f5131ac
commit b89f8c80cc
1 changed files with 15 additions and 1 deletions
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16
hw/virtio/virtio-crypto.c
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@ -877,6 +877,20 @@ static void virtio_crypto_class_init(ObjectClass *klass, void *data)
vdc->reset = virtio_crypto_reset;
}
static void
virtio_crypto_check_cryptodev_is_used(Object *obj, const char *name,
Object *val, Error **errp)
{
if (cryptodev_backend_is_used(CRYPTODEV_BACKEND(val))) {
char *path = object_get_canonical_path_component(val);
error_setg(errp,
"can't use already used cryptodev backend: %s", path);
g_free(path);
} else {
qdev_prop_allow_set_link_before_realize(obj, name, val, errp);
}
}
static void virtio_crypto_instance_init(Object *obj)
{
VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(obj);
@ -890,7 +904,7 @@ static void virtio_crypto_instance_init(Object *obj)
object_property_add_link(obj, "cryptodev",
TYPE_CRYPTODEV_BACKEND,
(Object **)&vcrypto->conf.cryptodev,
qdev_prop_allow_set_link_before_realize,
virtio_crypto_check_cryptodev_is_used,
OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
}