[QEMU v2 4/9] virtio-balloon: update linux head file for new feature

[Liang Li <liang.z.li@intel.com>]

Update the new feature bit definition for the new virt queue and
the request header struct to keep consistent with kernel side.

Signed-off-by: Liang Li <liang.z.li@intel.com>
---
 include/standard-headers/linux/virtio_balloon.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/standard-headers/linux/virtio_balloon.h b/include/standard-headers/linux/virtio_balloon.h
index d577359..797a868 100644
--- a/include/standard-headers/linux/virtio_balloon.h
+++ b/include/standard-headers/linux/virtio_balloon.h
@@ -35,6 +35,7 @@
 #define VIRTIO_BALLOON_F_STATS_VQ	1 /* Memory Stats virtqueue */
 #define VIRTIO_BALLOON_F_DEFLATE_ON_OOM	2 /* Deflate balloon on OOM */
 #define VIRTIO_BALLOON_F_PAGE_BITMAP	3 /* Send page info with bitmap */
+#define VIRTIO_BALLOON_F_MISC_VQ	4 /* Misc info virtqueue */
 
 /* Size of a PFN in the balloon interface. */
 #define VIRTIO_BALLOON_PFN_SHIFT 12
@@ -101,4 +102,25 @@ struct balloon_bmap_hdr {
 	__virtio64 bmap_len;
 };
 
+enum balloon_req_id {
+	/* Get free pages information */
+	BALLOON_GET_FREE_PAGES,
+};
+
+enum balloon_flag {
+	/* Have more data for a request */
+	BALLOON_FLAG_CONT,
+	/* No more data for a request */
+	BALLOON_FLAG_DONE,
+};
+
+struct balloon_req_hdr {
+	/* Used to distinguish different request */
+	__virtio16 cmd;
+	/* Reserved */
+	__virtio16 reserved[3];
+	/* Request parameter */
+	__virtio64 param;
+};
+
 #endif /* _LINUX_VIRTIO_BALLOON_H */
-- 
1.9.1