vhost-vsock: add vhost-vsock-common abstraction

This patch prepares the introduction of vhost-user-vsock, moving
the common code usable for both vhost-vsock and vhost-user-vsock
devices, in the new vhost-vsock-common parent class.

While moving the code, fixed checkpatch warnings about block comments.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20200522122512.87413-2-sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/include/hw/virtio/vhost-vsock-common.h b/include/hw/virtio/vhost-vsock-common.h
new file mode 100644
index 0000000000..f8b4aaae00
--- /dev/null
+++ b/include/hw/virtio/vhost-vsock-common.h
@@ -0,0 +1,47 @@
+/*
+ * Parent class for vhost-vsock devices
+ *
+ * Copyright 2015-2020 Red Hat, Inc.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or
+ * (at your option) any later version.  See the COPYING file in the
+ * top-level directory.
+ */
+
+#ifndef _QEMU_VHOST_VSOCK_COMMON_H
+#define _QEMU_VHOST_VSOCK_COMMON_H
+
+#include "hw/virtio/virtio.h"
+#include "hw/virtio/vhost.h"
+
+#define TYPE_VHOST_VSOCK_COMMON "vhost-vsock-common"
+#define VHOST_VSOCK_COMMON(obj) \
+        OBJECT_CHECK(VHostVSockCommon, (obj), TYPE_VHOST_VSOCK_COMMON)
+
+enum {
+    VHOST_VSOCK_SAVEVM_VERSION = 0,
+
+    VHOST_VSOCK_QUEUE_SIZE = 128,
+};
+
+typedef struct {
+    VirtIODevice parent;
+
+    struct vhost_virtqueue vhost_vqs[2];
+    struct vhost_dev vhost_dev;
+
+    VirtQueue *event_vq;
+    VirtQueue *recv_vq;
+    VirtQueue *trans_vq;
+
+    QEMUTimer *post_load_timer;
+} VHostVSockCommon;
+
+int vhost_vsock_common_start(VirtIODevice *vdev);
+void vhost_vsock_common_stop(VirtIODevice *vdev);
+int vhost_vsock_common_pre_save(void *opaque);
+int vhost_vsock_common_post_load(void *opaque, int version_id);
+void vhost_vsock_common_realize(VirtIODevice *vdev, const char *name);
+void vhost_vsock_common_unrealize(VirtIODevice *vdev);
+
+#endif /* _QEMU_VHOST_VSOCK_COMMON_H */