For now only add this definition from the spec. In the future, The drivers should negotiate this feature to optimize the performance. Signed-off-by: Max Gurtovoy <mgurtovoy@xxxxxxxxxx> --- include/uapi/linux/virtio_config.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/uapi/linux/virtio_config.h b/include/uapi/linux/virtio_config.h index b5eda06f0d57..3fcdc4ab6f19 100644 --- a/include/uapi/linux/virtio_config.h +++ b/include/uapi/linux/virtio_config.h @@ -82,6 +82,12 @@ /* This feature indicates support for the packed virtqueue layout. */ #define VIRTIO_F_RING_PACKED 34 +/* + * This feature indicates that all buffers are used by the device in the same + * order in which they have been made available. + */ +#define VIRTIO_F_IN_ORDER 35 + /* * This feature indicates that memory accesses by the driver and the * device are ordered in a way described by the platform. -- 2.18.1
