[PATCH 1/1] virtio: add VIRTIO_F_IN_ORDER to header file

Max Gurtovoy
2021-09-05T12:09:18Z

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@nvidia.com>
---
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