| From 24a7e4d20783c0514850f24a5c41ede46ab058f0 Mon Sep 17 00:00:00 2001 |
| From: "Michael S. Tsirkin" <mst@redhat.com> |
| Date: Fri, 20 Apr 2018 20:22:40 +0300 |
| Subject: virtio: add ability to iterate over vqs |
| |
| From: Michael S. Tsirkin <mst@redhat.com> |
| |
| commit 24a7e4d20783c0514850f24a5c41ede46ab058f0 upstream. |
| |
| For cleanup it's helpful to be able to simply scan all vqs and discard |
| all data. Add an iterator to do that. |
| |
| Cc: stable@vger.kernel.org |
| Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| include/linux/virtio.h | 3 +++ |
| 1 file changed, 3 insertions(+) |
| |
| --- a/include/linux/virtio.h |
| +++ b/include/linux/virtio.h |
| @@ -124,6 +124,9 @@ int virtio_device_freeze(struct virtio_d |
| int virtio_device_restore(struct virtio_device *dev); |
| #endif |
| |
| +#define virtio_device_for_each_vq(vdev, vq) \ |
| + list_for_each_entry(vq, &vdev->vqs, list) |
| + |
| /** |
| * virtio_driver - operations for a virtio I/O driver |
| * @driver: underlying device driver (populate name and owner). |
