1 files changed, 60 insertions, 0 deletions
diff --git a/hw/virtio/vhost-user-test-device.c b/hw/virtio/vhost-user-test-device.c
new file mode 100644
index 0000000..1b98ea3
--- /dev/null
+++ b/hw/virtio/vhost-user-test-device.c
@@ -0,0 +1,60 @@
+/*
+ * Generic vhost-user-test-device implementation for any vhost-user-backend
+ *
+ * This is a concrete implementation of vhost-user-base which can be
+ * configured via properties. It is useful for development and
+ * prototyping. It expects configuration details (if any) to be
+ * handled by the vhost-user daemon itself.
+ *
+ * Copyright (c) 2023 Linaro Ltd
+ * Author: Alex Bennée <alex.bennee@linaro.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/qdev-properties.h"
+#include "hw/virtio/virtio-bus.h"
+#include "hw/virtio/vhost-user-base.h"
+#include "qemu/error-report.h"
+
+/*
+ * The following is a concrete implementation of the base class which
+ * allows the user to define the key parameters via the command line.
+ */
+
+static const VMStateDescription vud_vmstate = {
+    .name = "vhost-user-test-device",
+    .unmigratable = 1,
+};
+
+static const Property vud_properties[] = {
+    DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
+    DEFINE_PROP_UINT16("virtio-id", VHostUserBase, virtio_id, 0),
+    DEFINE_PROP_UINT32("vq_size", VHostUserBase, vq_size, 64),
+    DEFINE_PROP_UINT32("num_vqs", VHostUserBase, num_vqs, 1),
+    DEFINE_PROP_UINT32("config_size", VHostUserBase, config_size, 0),
+};
+
+static void vud_class_init(ObjectClass *klass, const void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    device_class_set_props(dc, vud_properties);
+    dc->vmsd = &vud_vmstate;
+    set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
+}
+
+static const TypeInfo vud_info = {
+    .name = TYPE_VHOST_USER_TEST_DEVICE,
+    .parent = TYPE_VHOST_USER_BASE,
+    .class_init = vud_class_init,
+};
+
+static void vu_register_types(void)
+{
+    type_register_static(&vud_info);
+}
+
+type_init(vu_register_types)