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| author | Mathieu Poirier | 2021-10-12 22:59:02 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin | 2021-10-20 10:37:55 +0200 |
| commit | 821d28b88f850e5fbc66ee62bdd155eb2d474a29 (patch) | |
| tree | 05d9a58b5475b64acfc20c5d2cda7452660c99d3 /include/hw | |
| parent | libvhost-user: fix VHOST_USER_REM_MEM_REG skipping mmap_addr (diff) | |
| download | qemu-821d28b88f850e5fbc66ee62bdd155eb2d474a29.tar.gz qemu-821d28b88f850e5fbc66ee62bdd155eb2d474a29.tar.xz qemu-821d28b88f850e5fbc66ee62bdd155eb2d474a29.zip | |
vhost-user-rng: Add vhost-user-rng implementation
Introduce a random number generator (RNG) backend that communicates
with a vhost-user server to retrieve entropy. That way other VMM
that comply with the vhost user protocl can use the same vhost-user
daemon without having to write yet another RNG driver.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Message-Id: <20211012205904.4106769-2-mathieu.poirier@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw')
| -rw-r--r-- | include/hw/virtio/vhost-user-rng.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/hw/virtio/vhost-user-rng.h b/include/hw/virtio/vhost-user-rng.h new file mode 100644 index 0000000000..071539996d --- /dev/null +++ b/include/hw/virtio/vhost-user-rng.h @@ -0,0 +1,33 @@ +/* + * Vhost-user RNG virtio device + * + * Copyright (c) 2021 Mathieu Poirier <mathieu.poirier@linaro.org> + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef _QEMU_VHOST_USER_RNG_H +#define _QEMU_VHOST_USER_RNG_H + +#include "hw/virtio/virtio.h" +#include "hw/virtio/vhost.h" +#include "hw/virtio/vhost-user.h" +#include "chardev/char-fe.h" + +#define TYPE_VHOST_USER_RNG "vhost-user-rng" +OBJECT_DECLARE_SIMPLE_TYPE(VHostUserRNG, VHOST_USER_RNG) + +struct VHostUserRNG { + /*< private >*/ + VirtIODevice parent; + CharBackend chardev; + struct vhost_virtqueue *vhost_vq; + struct vhost_dev vhost_dev; + VhostUserState vhost_user; + VirtQueue *req_vq; + bool connected; + + /*< public >*/ +}; + +#endif /* _QEMU_VHOST_USER_RNG_H */ |