svn commit: r270270 - stable/10/sys/dev/virtio

[Bryan Venteicher]

Author: bryanv
Date: Thu Aug 21 13:27:05 2014
New Revision: 270270
URL: http://svnweb.freebsd.org/changeset/base/270270

Log:
  MFC r268480:
  
    Add accessor to get the number of free descriptors in the virtqueue

Modified:
  stable/10/sys/dev/virtio/virtqueue.c
  stable/10/sys/dev/virtio/virtqueue.h
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/virtio/virtqueue.c
==============================================================================
--- stable/10/sys/dev/virtio/virtqueue.c	Thu Aug 21 13:04:34 2014	(r270269)
+++ stable/10/sys/dev/virtio/virtqueue.c	Thu Aug 21 13:27:05 2014	(r270270)
@@ -375,6 +375,13 @@ virtqueue_size(struct virtqueue *vq)
 }
 
 int
+virtqueue_nfree(struct virtqueue *vq)
+{
+
+	return (vq->vq_free_cnt);
+}
+
+int
 virtqueue_empty(struct virtqueue *vq)
 {
 

Modified: stable/10/sys/dev/virtio/virtqueue.h
==============================================================================
--- stable/10/sys/dev/virtio/virtqueue.h	Thu Aug 21 13:04:34 2014	(r270269)
+++ stable/10/sys/dev/virtio/virtqueue.h	Thu Aug 21 13:27:05 2014	(r270270)
@@ -86,6 +86,7 @@ vm_paddr_t virtqueue_paddr(struct virtqu
 int	 virtqueue_full(struct virtqueue *vq);
 int	 virtqueue_empty(struct virtqueue *vq);
 int	 virtqueue_size(struct virtqueue *vq);
+int	 virtqueue_nfree(struct virtqueue *vq);
 int	 virtqueue_nused(struct virtqueue *vq);
 void	 virtqueue_notify(struct virtqueue *vq);
 void	 virtqueue_dump(struct virtqueue *vq);