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The Linux kernel already has a virtio-rng driver, this is the device implementation. When the guest asks for entropy from the virtio hwrng, it puts a buffer in the vq. We then put entropy into that buffer, and push it back to the guest. Signed-off-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- aliguori: converted to new RngBackend interface aliguori: remove entropy needed event aliguori: fix migration
25 lines
483 B
C
25 lines
483 B
C
/*
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* Virtio RNG Support
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*
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* Copyright Red Hat, Inc. 2012
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* Copyright Amit Shah <amit.shah@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*/
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#ifndef _QEMU_VIRTIO_RNG_H
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#define _QEMU_VIRTIO_RNG_H
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#include "qemu/rng.h"
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/* The Virtio ID for the virtio rng device */
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#define VIRTIO_ID_RNG 4
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struct VirtIORNGConf {
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RngBackend *rng;
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};
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#endif
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