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-rw-r--r--include/hw/virtio/virtio-rng.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/hw/virtio/virtio-rng.h b/include/hw/virtio/virtio-rng.h
index c578c00..973d809 100644
--- a/include/hw/virtio/virtio-rng.h
+++ b/include/hw/virtio/virtio-rng.h
@@ -15,6 +15,10 @@
#include "sysemu/rng.h"
#include "sysemu/rng-random.h"
+#define TYPE_VIRTIO_RNG "virtio-rng-device"
+#define VIRTIO_RNG(obj) \
+ OBJECT_CHECK(VirtIORNG, (obj), TYPE_VIRTIO_RNG)
+
/* The Virtio ID for the virtio rng device */
#define VIRTIO_ID_RNG 4
@@ -44,4 +48,14 @@ typedef struct VirtIORNG {
int64_t quota_remaining;
} VirtIORNG;
+/* Set a default rate limit of 2^47 bytes per minute or roughly 2TB/s. If
+ you have an entropy source capable of generating more entropy than this
+ and you can pass it through via virtio-rng, then hats off to you. Until
+ then, this is unlimited for all practical purposes.
+*/
+#define DEFINE_VIRTIO_RNG_PROPERTIES(_state, _conf_field) \
+ DEFINE_PROP_UINT64("max-bytes", _state, _conf_field.max_bytes, \
+ INT64_MAX), \
+ DEFINE_PROP_UINT32("period", _state, _conf_field.period_ms, 1 << 16)
+
#endif
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