Once it completes, calling scsi_req_continue will restart I/O. */
void scsi_req_data(SCSIRequest *req, int len)
{
- trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
- req->bus->info->transfer_data(req, len);
+ if (req->io_canceled) {
+ trace_scsi_req_data_canceled(req->dev->id, req->lun, req->tag, len);
+ } else {
+ trace_scsi_req_data(req->dev->id, req->lun, req->tag, len);
+ req->bus->info->transfer_data(req, len);
+ }
}
void scsi_req_print(SCSIRequest *req)
void scsi_req_cancel(SCSIRequest *req)
{
- if (req->ops->cancel_io) {
- req->ops->cancel_io(req);
+ if (!req->enqueued) {
+ return;
}
scsi_req_ref(req);
scsi_req_dequeue(req);
+ req->io_canceled = true;
+ if (req->ops->cancel_io) {
+ req->ops->cancel_io(req);
+ }
if (req->bus->info->cancel) {
req->bus->info->cancel(req);
}
void scsi_req_abort(SCSIRequest *req, int status)
{
+ if (!req->enqueued) {
+ return;
+ }
+ scsi_req_ref(req);
+ scsi_req_dequeue(req);
+ req->io_canceled = true;
if (req->ops->cancel_io) {
req->ops->cancel_io(req);
}
scsi_req_complete(req, status);
+ scsi_req_unref(req);
}
void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense)
# hw/scsi-bus.c
scsi_req_alloc(int target, int lun, int tag) "target %d lun %d tag %d"
scsi_req_data(int target, int lun, int tag, int len) "target %d lun %d tag %d len %d"
+scsi_req_data_canceled(int target, int lun, int tag, int len) "target %d lun %d tag %d len %d"
scsi_req_dequeue(int target, int lun, int tag) "target %d lun %d tag %d"
scsi_req_continue(int target, int lun, int tag) "target %d lun %d tag %d"
scsi_req_parsed(int target, int lun, int tag, int cmd, int mode, int xfer) "target %d lun %d tag %d command %d dir %d length %d"