From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53955) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WKu81-0001Hp-1D for qemu-devel@nongnu.org; Tue, 04 Mar 2014 13:31:50 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WKu7u-0007FV-UI for qemu-devel@nongnu.org; Tue, 04 Mar 2014 13:31:44 -0500 Received: from mail-wg0-f42.google.com ([74.125.82.42]:65285) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WKu7u-0007FG-Ds for qemu-devel@nongnu.org; Tue, 04 Mar 2014 13:31:38 -0500 Received: by mail-wg0-f42.google.com with SMTP id y10so5426932wgg.25 for ; Tue, 04 Mar 2014 10:31:37 -0800 (PST) From: Antonios Motakis Date: Tue, 4 Mar 2014 19:22:52 +0100 Message-Id: <1393957383-16685-10-git-send-email-a.motakis@virtualopensystems.com> In-Reply-To: <1393957383-16685-1-git-send-email-a.motakis@virtualopensystems.com> References: <1393957383-16685-1-git-send-email-a.motakis@virtualopensystems.com> Subject: [Qemu-devel] [PATCH v9 09/20] Add new virtio API virtio_queue_get_avail_idx List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org, snabb-devel@googlegroups.com Cc: Peter Maydell , mst@redhat.com, n.nikolaev@virtualopensystems.com, Anthony Liguori , Paolo Bonzini , lukego@gmail.com, Antonios Motakis , tech@virtualopensystems.com, =?UTF-8?q?Andreas=20F=C3=A4rber?= , KONRAD Frederic This function allows to get the current available ring index. Signed-off-by: Antonios Motakis Signed-off-by: Nikolay Nikolaev --- hw/virtio/virtio.c | 5 +++++ include/hw/virtio/virtio.h | 1 + 2 files changed, 6 insertions(+) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index aeabf3a..3c46e86 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1058,6 +1058,11 @@ hwaddr virtio_queue_get_ring_size(VirtIODevice *vdev, int n) virtio_queue_get_used_size(vdev, n); } +uint16_t virtio_queue_get_avail_idx(VirtIODevice *vdev, int n) +{ + return vring_avail_idx(&vdev->vq[n]); +} + uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n) { return vdev->vq[n].last_avail_idx; diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 3e54e90..3bb0db2 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -239,6 +239,7 @@ hwaddr virtio_queue_get_desc_size(VirtIODevice *vdev, int n); hwaddr virtio_queue_get_avail_size(VirtIODevice *vdev, int n); hwaddr virtio_queue_get_used_size(VirtIODevice *vdev, int n); hwaddr virtio_queue_get_ring_size(VirtIODevice *vdev, int n); +uint16_t virtio_queue_get_avail_idx(VirtIODevice *vdev, int n); uint16_t virtio_queue_get_last_avail_idx(VirtIODevice *vdev, int n); void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx); void virtio_queue_invalidate_signalled_used(VirtIODevice *vdev, int n); -- 1.8.3.2