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authorMichael S. Tsirkin <mst@redhat.com>2018-04-20 19:22:40 +0200
committerMichael S. Tsirkin <mst@redhat.com>2018-04-25 19:33:19 +0200
commit24a7e4d20783c0514850f24a5c41ede46ab058f0 (patch)
tree5d012612c580d047f5300f0b3333bf7bee9ac106 /include
parentvirtio_console: don't tie bufs to a vq (diff)
downloadlinux-24a7e4d20783c0514850f24a5c41ede46ab058f0.tar.xz
linux-24a7e4d20783c0514850f24a5c41ede46ab058f0.zip
virtio: add ability to iterate over vqs
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>
Diffstat (limited to 'include')
-rw-r--r--include/linux/virtio.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index 988c7355bc22..fa1b5da2804e 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -157,6 +157,9 @@ int virtio_device_freeze(struct virtio_device *dev);
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).