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.

Michael S. Tsirkin committed 11 years ago

Commit a4994b81 parent 87e7bf11 file · +10 −2Browse files

Showing the changes to include/uapi/linux (1 of 1 file). Show all

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include/uapi/linux/virtio_scsi.h+10−2

@@ -29,8 +29,16 @@ · 28 unmodified lines
29	29
30	30	#include <linux/virtio_types.h>
31	31
32		−#define VIRTIO_SCSI_CDB_SIZE 32
33		−#define VIRTIO_SCSI_SENSE_SIZE 96
	32	+/* Default values of the CDB and sense data size configuration fields */
	33	+#define VIRTIO_SCSI_CDB_DEFAULT_SIZE 32
	34	+#define VIRTIO_SCSI_SENSE_DEFAULT_SIZE 96
	35	+
	36	+#ifndef VIRTIO_SCSI_CDB_SIZE
	37	+#define VIRTIO_SCSI_CDB_SIZE VIRTIO_SCSI_CDB_DEFAULT_SIZE
	38	+#endif
	39	+#ifndef VIRTIO_SCSI_SENSE_SIZE
	40	+#define VIRTIO_SCSI_SENSE_SIZE VIRTIO_SCSI_SENSE_DEFAULT_SIZE
	41	+#endif
34	42
35	43	/* SCSI command request, followed by data-out */
36	44	struct virtio_scsi_cmd_req {