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authorMichael S. Tsirkin <mst@redhat.com>2015-03-11 14:19:03 +0100
committerMichael S. Tsirkin <mst@redhat.com>2015-03-11 18:24:29 +0100
commit2106ba30105969262a7810417a57524d9a225b91 (patch)
tree044e69f4438dd48eb912212677df09d09f7a0cc3
parente7cc8ba22ece189a44fa08671426cbc4377e2056 (diff)
uapi/virtio_scsi: allow overriding CDB/SENSE size
QEMU wants to use virtio scsi structures with a different VIRTIO_SCSI_CDB_SIZE/VIRTIO_SCSI_SENSE_SIZE, let's add ifdefs to allow overriding them. Keep the old defines under new names: VIRTIO_SCSI_CDB_DEFAULT_SIZE/VIRTIO_SCSI_SENSE_DEFAULT_SIZE, since that's what these values really are: defaults for cdb/sense size fields. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--include/standard-headers/linux/virtio_scsi.h12
1 files changed, 10 insertions, 2 deletions
diff --git a/include/standard-headers/linux/virtio_scsi.h b/include/standard-headers/linux/virtio_scsi.h
index 78ba9d3635..ab66166b6a 100644
--- a/include/standard-headers/linux/virtio_scsi.h
+++ b/include/standard-headers/linux/virtio_scsi.h
@@ -29,8 +29,16 @@
#include "standard-headers/linux/virtio_types.h"
-#define VIRTIO_SCSI_CDB_SIZE 32
-#define VIRTIO_SCSI_SENSE_SIZE 96
+/* Default values of the CDB and sense data size configuration fields */
+#define VIRTIO_SCSI_CDB_DEFAULT_SIZE 32
+#define VIRTIO_SCSI_SENSE_DEFAULT_SIZE 96
+
+#ifndef VIRTIO_SCSI_CDB_SIZE
+#define VIRTIO_SCSI_CDB_SIZE VIRTIO_SCSI_CDB_DEFAULT_SIZE
+#endif
+#ifndef VIRTIO_SCSI_SENSE_SIZE
+#define VIRTIO_SCSI_SENSE_SIZE VIRTIO_SCSI_SENSE_DEFAULT_SIZE
+#endif
/* SCSI command request, followed by data-out */
struct virtio_scsi_cmd_req {