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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> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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1 changed files with 10 additions and 2 deletions
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#include <linux/virtio_types.h>
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#include <linux/virtio_types.h>
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#define VIRTIO_SCSI_CDB_SIZE 32
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/* Default values of the CDB and sense data size configuration fields */
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#define VIRTIO_SCSI_SENSE_SIZE 96
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#define VIRTIO_SCSI_CDB_DEFAULT_SIZE 32
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#define VIRTIO_SCSI_SENSE_DEFAULT_SIZE 96
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#ifndef VIRTIO_SCSI_CDB_SIZE
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#define VIRTIO_SCSI_CDB_SIZE VIRTIO_SCSI_CDB_DEFAULT_SIZE
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#endif
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#ifndef VIRTIO_SCSI_SENSE_SIZE
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#define VIRTIO_SCSI_SENSE_SIZE VIRTIO_SCSI_SENSE_DEFAULT_SIZE
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#endif
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/* SCSI command request, followed by data-out */
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/* SCSI command request, followed by data-out */
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struct virtio_scsi_cmd_req {
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struct virtio_scsi_cmd_req {
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