cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

virtio-rng.h (1229B)

      1/*
      2 * Virtio RNG Support
      3 *
      4 * Copyright Red Hat, Inc. 2012
      5 * Copyright Amit Shah <amit.shah@redhat.com>
      6 *
      7 * This work is licensed under the terms of the GNU GPL, version 2 or
      8 * (at your option) any later version.  See the COPYING file in the
      9 * top-level directory.
     10 */
     11
     12#ifndef QEMU_VIRTIO_RNG_H
     13#define QEMU_VIRTIO_RNG_H
     14
     15#include "hw/virtio/virtio.h"
     16#include "sysemu/rng.h"
     17#include "standard-headers/linux/virtio_rng.h"
     18#include "qom/object.h"
     19
     20#define TYPE_VIRTIO_RNG "virtio-rng-device"
     21OBJECT_DECLARE_SIMPLE_TYPE(VirtIORNG, VIRTIO_RNG)
     22#define VIRTIO_RNG_GET_PARENT_CLASS(obj) \
     23        OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_RNG)
     24
     25struct VirtIORNGConf {
     26    RngBackend *rng;
     27    uint64_t max_bytes;
     28    uint32_t period_ms;
     29};
     30
     31struct VirtIORNG {
     32    VirtIODevice parent_obj;
     33
     34    /* Only one vq - guest puts buffer(s) on it when it needs entropy */
     35    VirtQueue *vq;
     36
     37    VirtIORNGConf conf;
     38
     39    RngBackend *rng;
     40
     41    /* We purposefully don't migrate this state.  The quota will reset on the
     42     * destination as a result.  Rate limiting is host state, not guest state.
     43     */
     44    QEMUTimer *rate_limit_timer;
     45    int64_t quota_remaining;
     46    bool activate_timer;
     47
     48    VMChangeStateEntry *vmstate;
     49};
     50
     51#endif