Merge remote-tracking branch 'bonzini/scsi-next' into staging

* bonzini/scsi-next:
  scsi: Support TEST UNIT READY in the dummy LUN0
  block: add .bdrv_reopen_prepare() stub for iscsi
  virtio-scsi: Prevent assertion on missed events
  virtio-scsi: Cleanup of I/Os that never started
  scsi: Assign cancel_io vector for scsi_disk_emulate_ops

Conflicts:
	block/iscsi.c

aliguori: resolve trivial merge conflict in block/iscsi.c

Signed-off-by: Anthony Liguori <aliguori@amazon.com>

block/iscsi.c

@@ -1334,7 +1334,14 @@ static int iscsi_refresh_limits(BlockDriverState *bs)
         bs->bl.opt_transfer_length = sector_lun2qemu(iscsilun->bl.opt_xfer_len,
                                                      iscsilun);
     }
+    return 0;
+}
 
+/* We have nothing to do for iSCSI reopen, stub just returns
+ * success */
+static int iscsi_reopen_prepare(BDRVReopenState *state,
+                                BlockReopenQueue *queue, Error **errp)
+{
     return 0;
 }
 
@@ -1446,6 +1453,7 @@ static BlockDriver bdrv_iscsi = {
     .bdrv_close      = iscsi_close,
     .bdrv_create     = iscsi_create,
     .create_options  = iscsi_create_options,
+    .bdrv_reopen_prepare  = iscsi_reopen_prepare,
 
     .bdrv_getlength  = iscsi_getlength,
     .bdrv_get_info   = iscsi_get_info,

hw/scsi/scsi-bus.c

@@ -469,6 +469,8 @@ static int32_t scsi_target_send_command(SCSIRequest *req, uint8_t *buf)
             r->req.dev->sense_is_ua = false;
         }
         break;
+    case TEST_UNIT_READY:
+        break;
     default:
         scsi_req_build_sense(req, SENSE_CODE(LUN_NOT_SUPPORTED));
         scsi_req_complete(req, CHECK_CONDITION);

hw/scsi/scsi-disk.c

@@ -2306,6 +2306,7 @@ static const SCSIReqOps scsi_disk_emulate_reqops = {
     .send_command = scsi_disk_emulate_command,
     .read_data    = scsi_disk_emulate_read_data,
     .write_data   = scsi_disk_emulate_write_data,
+    .cancel_io    = scsi_cancel_io,
     .get_buf      = scsi_get_buf,
 };
 

hw/scsi/virtio-scsi.c

@@ -306,6 +306,10 @@ static void virtio_scsi_command_complete(SCSIRequest *r, uint32_t status,
     VirtIOSCSIReq *req = r->hba_private;
     uint32_t sense_len;
 
+    if (r->io_canceled) {
+        return;
+    }
+
     req->resp.cmd->response = VIRTIO_SCSI_S_OK;
     req->resp.cmd->status = status;
     if (req->resp.cmd->status == GOOD) {
@@ -516,7 +520,7 @@ static void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
     evt->event = event;
     evt->reason = reason;
     if (!dev) {
-        assert(event == VIRTIO_SCSI_T_NO_EVENT);
+        assert(event == VIRTIO_SCSI_T_EVENTS_MISSED);
     } else {
         evt->lun[0] = 1;
         evt->lun[1] = dev->id;