mirror of https://github.com/proxmox/mirror_qemu
48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
/*
|
|
* 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 "qemu/rng.h"
|
|
#include "qemu/rng-random.h"
|
|
|
|
/* The Virtio ID for the virtio rng device */
|
|
#define VIRTIO_ID_RNG 4
|
|
|
|
struct VirtIORNGConf {
|
|
RngBackend *rng;
|
|
uint64_t max_bytes;
|
|
uint32_t period_ms;
|
|
RndRandom *default_backend;
|
|
};
|
|
|
|
typedef struct VirtIORNG {
|
|
VirtIODevice vdev;
|
|
|
|
DeviceState *qdev;
|
|
|
|
/* 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;
|
|
} VirtIORNG;
|
|
|
|
#endif
|