Add qemu 2.4.0

[kvmfornfv.git] / qemu / include / hw / virtio / virtio-rng.h

diff --git a/qemu/include/hw/virtio/virtio-rng.h b/qemu/include/hw/virtio/virtio-rng.h
new file mode 100644 (file)
index 0000000..3f07de7
--- /dev/null
+++ b/qemu/include/hw/virtio/virtio-rng.h
@@ -0,0 +1,50 @@
+/*
+ * Virtio RNG Support
+ *
+ * Copyright Red Hat, Inc. 2012
+ * Copyright Amit Shah <amit.shah@redhat.com>
+ *
+ * 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_VIRTIO_RNG_H
+#define _QEMU_VIRTIO_RNG_H
+
+#include "sysemu/rng.h"
+#include "sysemu/rng-random.h"
+#include "standard-headers/linux/virtio_rng.h"
+
+#define TYPE_VIRTIO_RNG "virtio-rng-device"
+#define VIRTIO_RNG(obj) \
+        OBJECT_CHECK(VirtIORNG, (obj), TYPE_VIRTIO_RNG)
+#define VIRTIO_RNG_GET_PARENT_CLASS(obj) \
+        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_RNG)
+
+struct VirtIORNGConf {
+    RngBackend *rng;
+    uint64_t max_bytes;
+    uint32_t period_ms;
+    RndRandom *default_backend;
+};
+
+typedef struct VirtIORNG {
+    VirtIODevice parent_obj;
+
+    /* Only one vq - guest puts buffer(s) on it when it needs entropy */
+    VirtQueue *vq;
+
+    VirtIORNGConf conf;
+
+    RngBackend *rng;
+
+    /* We purposefully don't migrate this state.  The quota will reset on the
+     * destination as a result.  Rate limiting is host state, not guest state.
+     */
+    QEMUTimer *rate_limit_timer;
+    int64_t quota_remaining;
+    bool activate_timer;
+} VirtIORNG;
+
+#endif