static void vhost_scsi_realize(DeviceState *dev, Error **errp)
{
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(dev);
VHostSCSI *s = VHOST_SCSI(dev);
Error *err = NULL;
int vhostfd = -1;
int ret;
if (!vs->conf.wwpn) {
error_setg(errp, "vhost-scsi: missing wwpn");
return;
}
if (vs->conf.vhostfd) {
vhostfd = monitor_fd_param(cur_mon, vs->conf.vhostfd, errp);
if (vhostfd == -1) {
error_prepend(errp, "vhost-scsi: unable to parse vhostfd: ");
return;
}
} else {
vhostfd = open("/dev/vhost-scsi", O_RDWR);
if (vhostfd < 0) {
error_setg(errp, "vhost-scsi: open vhost char device failed: %s",
strerror(errno));
return;
}
}
virtio_scsi_common_realize(dev, &err, vhost_dummy_handle_output,
vhost_dummy_handle_output,
vhost_dummy_handle_output);
if (err != NULL) {
error_propagate(errp, err);
close(vhostfd);
return;
}
s->dev.nvqs = VHOST_SCSI_VQ_NUM_FIXED + vs->conf.num_queues;
s->dev.vqs = g_new(struct vhost_virtqueue, s->dev.nvqs);
s->dev.vq_index = 0;
s->dev.backend_features = 0;
ret = vhost_dev_init(&s->dev, (void *)(uintptr_t)vhostfd,
VHOST_BACKEND_TYPE_KERNEL);
if (ret < 0) {
error_setg(errp, "vhost-scsi: vhost initialization failed: %s",
strerror(-ret));
return;
}
/* At present, channel and lun both are 0 for bootable vhost-scsi disk */
s->channel = 0;
s->lun = 0;
/* Note: we can also get the minimum tpgt from kernel */
s->target = vs->conf.boot_tpgt;
error_setg(&s->migration_blocker,
"vhost-scsi does not support migration");
migrate_add_blocker(s->migration_blocker);
}
static void vhost_user_scsi_realize(DeviceState *dev, Error **errp)
{
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(dev);
VHostUserSCSI *s = VHOST_USER_SCSI(dev);
VHostSCSICommon *vsc = VHOST_SCSI_COMMON(s);
Error *err = NULL;
int ret;
if (!vs->conf.chardev.chr) {
error_setg(errp, "vhost-user-scsi: missing chardev");
return;
}
virtio_scsi_common_realize(dev, vhost_dummy_handle_output,
vhost_dummy_handle_output,
vhost_dummy_handle_output, &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
if (!vhost_user_init(&s->vhost_user, &vs->conf.chardev, errp)) {
return;
}
vsc->dev.nvqs = 2 + vs->conf.num_queues;
vsc->dev.vqs = g_new(struct vhost_virtqueue, vsc->dev.nvqs);
vsc->dev.vq_index = 0;
vsc->dev.backend_features = 0;
ret = vhost_dev_init(&vsc->dev, &s->vhost_user,
VHOST_BACKEND_TYPE_USER, 0);
if (ret < 0) {
error_setg(errp, "vhost-user-scsi: vhost initialization failed: %s",
strerror(-ret));
vhost_user_cleanup(&s->vhost_user);
return;
}
/* Channel and lun both are 0 for bootable vhost-user-scsi disk */
vsc->channel = 0;
vsc->lun = 0;
vsc->target = vs->conf.boot_tpgt;
}
static void vhost_scsi_realize(DeviceState *dev, Error **errp)
{
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(dev);
VHostSCSI *s = VHOST_SCSI(dev);
Error *err = NULL;
int vhostfd = -1;
int ret;
if (!vs->conf.wwpn) {
error_setg(errp, "vhost-scsi: missing wwpn");
return;
}
if (vs->conf.vhostfd) {
vhostfd = monitor_handle_fd_param(cur_mon, vs->conf.vhostfd);
if (vhostfd == -1) {
error_setg(errp, "vhost-scsi: unable to parse vhostfd");
return;
}
}
virtio_scsi_common_realize(dev, &err);
if (err != NULL) {
error_propagate(errp, err);
return;
}
s->dev.nvqs = VHOST_SCSI_VQ_NUM_FIXED + vs->conf.num_queues;
s->dev.vqs = g_new(struct vhost_virtqueue, s->dev.nvqs);
s->dev.vq_index = 0;
ret = vhost_dev_init(&s->dev, vhostfd, "/dev/vhost-scsi", true);
if (ret < 0) {
error_setg(errp, "vhost-scsi: vhost initialization failed: %s",
strerror(-ret));
return;
}
s->dev.backend_features = 0;
error_setg(&s->migration_blocker,
"vhost-scsi does not support migration");
migrate_add_blocker(s->migration_blocker);
}
