[Qemu-devel] [PULL 30/42] dataplane: Support VIRTIO_BLK_T_SCSI_CMD

[Stefan Hajnoczi <stefanha@redhat.com>]

From: Fam Zheng <famz@redhat.com>

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 hw/block/dataplane/virtio-blk.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index 217992b..c10b7b7 100644
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -204,6 +204,15 @@ static void do_flush_cmd(VirtIOBlockDataPlane *s, VirtQueueElement *elem,
     bdrv_aio_flush(s->blk->conf.bs, complete_flush, req);
 }
 
+static void do_scsi_cmd(VirtIOBlockDataPlane *s, VirtQueueElement *elem,
+                        QEMUIOVector *inhdr)
+{
+    int status;
+
+    status = virtio_blk_handle_scsi_req(VIRTIO_BLK(s->vdev), elem);
+    complete_request_early(s, elem, inhdr, status);
+}
+
 static int process_request(VirtIOBlockDataPlane *s, VirtQueueElement *elem)
 {
     struct iovec *iov = elem->out_sg;
@@ -252,8 +261,7 @@ static int process_request(VirtIOBlockDataPlane *s, VirtQueueElement *elem)
         return 0;
 
     case VIRTIO_BLK_T_SCSI_CMD:
-        /* TODO support SCSI commands */
-        complete_request_early(s, elem, inhdr, VIRTIO_BLK_S_UNSUPP);
+        do_scsi_cmd(s, elem, inhdr);
         return 0;
 
     case VIRTIO_BLK_T_FLUSH:
@@ -330,12 +338,6 @@ void virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *blk,
         return;
     }
 
-    if (blk->scsi) {
-        error_setg(errp,
-                   "device is incompatible with x-data-plane, use scsi=off");
-        return;
-    }
-
     /* If dataplane is (re-)enabled while the guest is running there could be
      * block jobs that can conflict.
      */
-- 
1.9.3