[PATCH v12 15/40] virtio_ring: packed: introduce vring_free_packed

Xuan Zhuo
Wed, 20 Jul 2022 03:04:11 -0000

Free the structure struct vring_vritqueue_packed.

Subsequent patches require it.

Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com>
---
 drivers/virtio/virtio_ring.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 2ea6d022cbd7..207a2b57270c 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1832,6 +1832,28 @@ static struct vring_desc_extra
*vring_alloc_desc_extra(unsigned int num)
 	return desc_extra;
 }

+static void vring_free_packed(struct vring_virtqueue_packed *vring_packed,
+			      struct virtio_device *vdev)
+{
+	if (vring_packed->vring.desc)
+		vring_free_queue(vdev, vring_packed->ring_size_in_bytes,
+				 vring_packed->vring.desc,
+				 vring_packed->ring_dma_addr);
+
+	if (vring_packed->vring.driver)
+		vring_free_queue(vdev, vring_packed->event_size_in_bytes,
+				 vring_packed->vring.driver,
+				 vring_packed->driver_event_dma_addr);
+
+	if (vring_packed->vring.device)
+		vring_free_queue(vdev, vring_packed->event_size_in_bytes,
+				 vring_packed->vring.device,
+				 vring_packed->device_event_dma_addr);
+
+	kfree(vring_packed->desc_state);
+	kfree(vring_packed->desc_extra);
+}
+
 static struct virtqueue *vring_create_virtqueue_packed(
 	unsigned int index,
 	unsigned int num,
--
2.31.0