sndif: Introduce protocol version

Protocol version was referenced in the protocol description,
but missed its definition. Fix this by adding a constant
for current protocol version.

Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Release-acked-by: Juergen Gross <jgross@suse.com>

diff --git a/xen/include/public/io/sndif.h b/xen/include/public/io/sndif.h
index c5c1978406b3a6591d982b330e730a4af3d2b9ef..667e610fda2b9b5a2d0aec64d951428bdb4c72ca 100644 (file)
--- a/xen/include/public/io/sndif.h
+++ b/xen/include/public/io/sndif.h
@@ -36,6 +36,13 @@
 #include "ring.h"
 #include "../grant_table.h"
 
+/*
+ ******************************************************************************
+ *                           Protocol version
+ ******************************************************************************
+ */
+#define XENSND_PROTOCOL_VERSION         1
+
 /*
  ******************************************************************************
  *                  Feature and Parameter Negotiation