9pfs: factor out virtio_9p_push_and_notify

The new function resides in virtio specific file.
Signed-off-by: NWei Liu <wei.liu2@citrix.com>
Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

hw/9pfs/virtio-9p-device.c

@@ -20,6 +20,17 @@
 #include "coth.h"
 #include "hw/virtio/virtio-access.h"
 
+void virtio_9p_push_and_notify(V9fsPDU *pdu)
+{
+    V9fsState *s = pdu->s;
+
+    /* push onto queue and notify */
+    virtqueue_push(s->vq, &pdu->elem, pdu->size);
+
+    /* FIXME: we should batch these completions */
+    virtio_notify(VIRTIO_DEVICE(s), s->vq);
+}
+
 static uint64_t virtio_9p_get_features(VirtIODevice *vdev, uint64_t features,
                                        Error **errp)
 {

hw/9pfs/virtio-9p.c

@@ -65,13 +65,7 @@ ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...)
 
 static void pdu_push_and_notify(V9fsPDU *pdu)
 {
-    V9fsState *s = pdu->s;
-
-    /* push onto queue and notify */
-    virtqueue_push(s->vq, &pdu->elem, pdu->size);
-
-    /* FIXME: we should batch these completions */
-    virtio_notify(VIRTIO_DEVICE(s), s->vq);
+    virtio_9p_push_and_notify(pdu);
 }
 
 static int omode_to_uflags(int8_t mode)

hw/9pfs/virtio-9p.h

@@ -6,6 +6,8 @@
 #include "9p.h"
 
 extern void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq);
+extern void virtio_9p_push_and_notify(V9fsPDU *pdu);
+
 ssize_t virtio_pdu_vmarshal(V9fsPDU *pdu, size_t offset,
                             const char *fmt, va_list ap);
 ssize_t virtio_pdu_vunmarshal(V9fsPDU *pdu, size_t offset,