From 98ae454efe48b2a465dfe9bc3c412b6375f1fbfc Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Mon, 9 Dec 2019 11:46:13 -0500 Subject: [PATCH 1/9] virtio: add ability to delete vq through a pointer Devices tend to maintain vq pointers, allow deleting them trough a vq pointer. Signed-off-by: Michael S. Tsirkin Reviewed-by: David Hildenbrand Signed-off-by: AlexChen --- hw/virtio/virtio.c | 13 +++++++++---- include/hw/virtio/virtio.h | 2 ++ 2 files changed, 11 insertions(+), 4 deletions(-) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 79c2dcf..3d027d3 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1636,16 +1636,21 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, return &vdev->vq[i]; } +void virtio_delete_queue(VirtQueue *vq) +{ + vq->vring.num = 0; + vq->vring.num_default = 0; + vq->handle_output = NULL; + vq->handle_aio_output = NULL; +} + void virtio_del_queue(VirtIODevice *vdev, int n) { if (n < 0 || n >= VIRTIO_QUEUE_MAX) { abort(); } - vdev->vq[n].vring.num = 0; - vdev->vq[n].vring.num_default = 0; - vdev->vq[n].handle_output = NULL; - vdev->vq[n].handle_aio_output = NULL; + virtio_delete_queue(&vdev->vq[n]); } static void virtio_set_isr(VirtIODevice *vdev, int value) diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index f9f6237..ca2fbae 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -187,6 +187,8 @@ VirtQueue *virtio_add_queue(VirtIODevice *vdev, int queue_size, void virtio_del_queue(VirtIODevice *vdev, int n); +void virtio_delete_queue(VirtQueue *vq); + void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem, unsigned int len); void virtqueue_flush(VirtQueue *vq, unsigned int count); -- 1.8.3.1