[Xen-devel] [PATCH v2 3/9] xen: introduce the header file for the Xen 9pfs transport protocol

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

It uses the new ring.h macros to declare rings and interfaces.

Signed-off-by: Stefano Stabellini <stefano@xxxxxxxxxxx>
CC: anthony.perard@xxxxxxxxxx
CC: jgross@xxxxxxxx
---
 hw/9pfs/xen_9pfs.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 hw/9pfs/xen_9pfs.h

diff --git a/hw/9pfs/xen_9pfs.h b/hw/9pfs/xen_9pfs.h
new file mode 100644
index 0000000..c4e8901
--- /dev/null
+++ b/hw/9pfs/xen_9pfs.h
@@ -0,0 +1,20 @@
+#ifndef XEN_9PFS_H
+#define XEN_9PFS_H
+
+#include "hw/xen/io/ring.h"
+#include <xen/io/protocols.h>
+
+struct xen_9pfs_header {
+       uint32_t size;
+       uint8_t id;
+       uint16_t tag;
+
+       /* uint8_t sdata[]; */
+} __attribute__((packed));
+
+#define PAGE_SHIFT XC_PAGE_SHIFT
+#define XEN_9PFS_RING_ORDER 6
+#define XEN_9PFS_RING_SIZE  XEN_FLEX_RING_SIZE(XEN_9PFS_RING_ORDER)
+DEFINE_XEN_FLEX_RING_AND_INTF(xen_9pfs);
+
+#endif
-- 
1.9.1


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