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cryptodev: introduce a new is_used property

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This property is used to Tag the cryptodev backend
is used by virtio-crypto or not. Making cryptodev
can't be hot unplugged when it's in use. Cleanup
resources when cryptodev is finalized.

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 11:12:38 +08:00
committed by Michael S. Tsirkin
parent c159a4d1d0
commit 46fd170545
3 changed files with 44 additions and 0 deletions
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19
backends/cryptodev.c
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@ -197,6 +197,22 @@ out:
error_propagate(errp, local_err);
}
void cryptodev_backend_set_used(CryptoDevBackend *backend, bool used)
{
backend->is_used = used;
}
bool cryptodev_backend_is_used(CryptoDevBackend *backend)
{
return backend->is_used;
}
static bool
cryptodev_backend_can_be_deleted(UserCreatable *uc, Error **errp)
{
return !cryptodev_backend_is_used(CRYPTODEV_BACKEND(uc));
}
static void cryptodev_backend_instance_init(Object *obj)
{
object_property_add(obj, "queues", "int",
@ -209,7 +225,9 @@ static void cryptodev_backend_instance_init(Object *obj)
static void cryptodev_backend_finalize(Object *obj)
{
CryptoDevBackend *backend = CRYPTODEV_BACKEND(obj);
cryptodev_backend_cleanup(backend, NULL);
}
static void
@ -218,6 +236,7 @@ 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);
}