virtio: add vhost support for virtio devices

This patch adds a get_vhost() callback function for VirtIODevices that
returns the device's corresponding vhost_dev structure, if the vhost
device is running. This patch also adds a vhost_started flag for
VirtIODevices.

Previously, a VirtIODevice wouldn't be able to tell if its corresponding
vhost device was active or not.

Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1648819405-25696-3-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jonah Palmer 2022-04-01 09:23:19 -04:00 committed by Michael S. Tsirkin
parent 3857cd5c7f
commit c255488d67
12 changed files with 76 additions and 1 deletions

View file

@ -273,6 +273,13 @@ static void vhost_scsi_unrealize(DeviceState *dev)
virtio_scsi_common_unrealize(dev);
}
static struct vhost_dev *vhost_scsi_get_vhost(VirtIODevice *vdev)
{
VHostSCSI *s = VHOST_SCSI(vdev);
VHostSCSICommon *vsc = VHOST_SCSI_COMMON(s);
return &vsc->dev;
}
static Property vhost_scsi_properties[] = {
DEFINE_PROP_STRING("vhostfd", VirtIOSCSICommon, conf.vhostfd),
DEFINE_PROP_STRING("wwpn", VirtIOSCSICommon, conf.wwpn),
@ -307,6 +314,7 @@ static void vhost_scsi_class_init(ObjectClass *klass, void *data)
vdc->get_features = vhost_scsi_common_get_features;
vdc->set_config = vhost_scsi_common_set_config;
vdc->set_status = vhost_scsi_set_status;
vdc->get_vhost = vhost_scsi_get_vhost;
fwc->get_dev_path = vhost_scsi_common_get_fw_dev_path;
}