virtio-blk: Move VirtIOBlockReq to header

For later reusing by dataplane code.
Signed-off-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

hw/block/virtio-blk.c

@@ -27,17 +27,6 @@
 #endif
 #include "hw/virtio/virtio-bus.h"
 
-typedef struct VirtIOBlockReq
-{
-    VirtIOBlock *dev;
-    VirtQueueElement elem;
-    struct virtio_blk_inhdr *in;
-    struct virtio_blk_outhdr *out;
-    QEMUIOVector qiov;
-    struct VirtIOBlockReq *next;
-    BlockAcctCookie acct;
-} VirtIOBlockReq;
-
 static void virtio_blk_req_complete(VirtIOBlockReq *req, int status)
 {
     VirtIOBlock *s = req->dev;

include/hw/virtio/virtio-blk.h

@@ -17,6 +17,7 @@
 #include "hw/virtio/virtio.h"
 #include "hw/block/block.h"
 #include "sysemu/iothread.h"
+#include "block/block.h"
 
 #define TYPE_VIRTIO_BLK "virtio-blk-device"
 #define VIRTIO_BLK(obj) \
@@ -133,6 +134,16 @@ typedef struct VirtIOBlock {
 #endif
 } VirtIOBlock;
 
+typedef struct VirtIOBlockReq {
+    VirtIOBlock *dev;
+    VirtQueueElement elem;
+    struct virtio_blk_inhdr *in;
+    struct virtio_blk_outhdr *out;
+    QEMUIOVector qiov;
+    struct VirtIOBlockReq *next;
+    BlockAcctCookie acct;
+} VirtIOBlockReq;
+
 #define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
         DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)