Add virtio-loopback-adapter

The virtio-loopback-adapter is part of the Virtio Loopback
architecture detailed in the following link:
  https://git.virtualopensystems.com/virtio-loopback/docs

The following vhost-user devices are supported:
- vhost-user-blk
- vhost-user-rng
- vhost-user-input
- vhost-user-gpio
- vhost-user-sound

Bug-AGL: SPEC-4834
Change-Id: I4edb28faf370992f5f45390f5c4240a0f5c3084c
Signed-off-by: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>

1 files changed, 44 insertions, 0 deletions

diff --git a/vhost_user_rng.h b/vhost_user_rng.h
new file mode 100644
index 0000000..69b5916
--- /dev/null
+++ b/vhost_user_rng.h
@@ -0,0 +1,44 @@
+/*
+ * Based on vhost-user-rng of QEMU project
+ *
+ * Copyright (c) 2021 Mathieu Poirier <mathieu.poirier@linaro.org>
+ *
+ * Copyright (c) 2022-2023 Virtual Open Systems SAS.
+ *
+ * Author:
+ *  Timos Ampelikiotis <t.ampelikiotis@virtualopensystems.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef VHOST_USER_RNG
+#define VHOST_USER_RNG
+
+#include "vhost_loopback.h"
+#include "virtio_rng.h"
+#include "vhost_user_loopback.h"
+#include "virtio_loopback.h"
+
+typedef struct VHostUserRNG {
+    VirtIODevice *parent;
+    struct vhost_virtqueue *vhost_vq;
+    struct vhost_dev *vhost_dev;
+    VirtQueue *req_vq;
+    bool connected;
+} VHostUserRNG;
+
+void vhost_user_rng_realize(void);
+
+#endif /* VHOST_USER_RNG */