diff options
| author | Alex Bennée <alex.bennee@linaro.org> | 2023-07-10 16:35:09 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-10-04 04:54:04 -0400 |
| commit | eee77809733d3a94c0d78a29a93d032c1faefd2c (patch) | |
| tree | 857c5e00e2aff1801c844f7722b09895d50ac4ca /include | |
| parent | f05356f84d2e3cb4f6437716cc9b5dc59baf769d (diff) | |
virtio: add vhost-user-base and a generic vhost-user-device
In theory we shouldn't need to repeat so much boilerplate to support
vhost-user backends. This provides a generic vhost-user-base QOM
object and a derived vhost-user-device for which the user needs to
provide the few bits of information that aren't currently provided by
the vhost-user protocol. This should provide a baseline implementation
from which the other vhost-user stub can specialise.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230710153522.3469097-8-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/virtio/vhost-user-device.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/hw/virtio/vhost-user-device.h b/include/hw/virtio/vhost-user-device.h new file mode 100644 index 0000000000..9105011e25 --- /dev/null +++ b/include/hw/virtio/vhost-user-device.h @@ -0,0 +1,45 @@ +/* + * Vhost-user generic virtio device + * + * Copyright (c) 2023 Linaro Ltd + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef QEMU_VHOST_USER_DEVICE_H +#define QEMU_VHOST_USER_DEVICE_H + +#include "hw/virtio/vhost.h" +#include "hw/virtio/vhost-user.h" + +#define TYPE_VHOST_USER_BASE "vhost-user-base" + +OBJECT_DECLARE_TYPE(VHostUserBase, VHostUserBaseClass, VHOST_USER_BASE) + +struct VHostUserBase { + VirtIODevice parent; + /* Properties */ + CharBackend chardev; + uint16_t virtio_id; + uint32_t num_vqs; + /* State tracking */ + VhostUserState vhost_user; + struct vhost_virtqueue *vhost_vq; + struct vhost_dev vhost_dev; + GPtrArray *vqs; + bool connected; +}; + + /* needed so we can use the base realize after specialisation + tweaks */ +struct VHostUserBaseClass { + /*< private >*/ + VirtioDeviceClass parent_class; + /*< public >*/ + DeviceRealize parent_realize; +}; + +/* shared for the benefit of the derived pci class */ +#define TYPE_VHOST_USER_DEVICE "vhost-user-device" + +#endif /* QEMU_VHOST_USER_DEVICE_H */ |