Add multiple-device support virtio-loopback-adapter

Updates [v1]:
- The adapter supports multiple vhost-user devices running in
  parallel.
- Redesign the devices interfaces. Unified their common functionality
  and add it into vhost-user-loopback lib. This eases the addition of
  new vhost-user devices and makes the virtio-loopback adapter more
  device agnostic.

Bug-AGL: SPEC-4834
Change-Id: I9aff91dce0207ccdd8c2d1c5d0769a13b4e9ae04
Signed-off-by: Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/include/vhost_user_input.h b/include/vhost_user_input.h
new file mode 100644
index 0000000..8137694
--- /dev/null
+++ b/include/vhost_user_input.h
@@ -0,0 +1,30 @@
+/*
+ * Based on virtio-input.h of QEMU project
+ *
+ * Copyright (c) 2022-2024 Virtual Open Systems SAS.
+ *
+ * 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 VHOST_USER_INPUT
+#define VHOST_USER_INPUT
+
+#include "vhost_loopback.h"
+#include "vhost_user_loopback.h"
+#include "virtio_loopback.h"
+#include <linux/virtio_input.h>
+
+typedef struct VhostUserInput {
+    VirtIODevice *parent;
+    struct vhost_dev *vhost_dev;
+    struct virtio_input_config        config;
+    VirtQueue                         *evt, *sts;
+    bool started;
+    bool completed;
+} VhostUserInput;
+
+void virtio_input_device_realize(struct adapter_dev *adev);
+
+#endif /* VHOST_USER_INPUT */