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Diffstat (limited to 'include/linux/virtio_blk.h')
-rw-r--r--include/linux/virtio_blk.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/virtio_blk.h b/include/linux/virtio_blk.h
index e52029e98919..167720d695ed 100644
--- a/include/linux/virtio_blk.h
+++ b/include/linux/virtio_blk.h
@@ -17,6 +17,8 @@
#define VIRTIO_BLK_F_FLUSH 9 /* Cache flush command support */
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
+#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
+
struct virtio_blk_config {
/* The capacity (in 512-byte sectors). */
__u64 capacity;
@@ -67,6 +69,9 @@ struct virtio_blk_config {
/* Cache flush command */
#define VIRTIO_BLK_T_FLUSH 4
+/* Get device ID command */
+#define VIRTIO_BLK_T_GET_ID 8
+
/* Barrier before this op. */
#define VIRTIO_BLK_T_BARRIER 0x80000000