From cd4c812acb8390a3cfa0a178b777979f9cdd3eeb Mon Sep 17 00:00:00 2001 From: Xuan Zhuo Date: Mon, 1 Aug 2022 14:38:28 +0800 Subject: [PATCH] virtio_ring: split: __vring_new_virtqueue() accept struct vring_virtqueue_split __vring_new_virtqueue() instead accepts struct vring_virtqueue_split. The purpose of this is to pass more information into __vring_new_virtqueue() to make the code simpler and the structure cleaner. Signed-off-by: Xuan Zhuo Acked-by: Jason Wang Message-Id: <20220801063902.129329-9-xuanzhuo@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin --- drivers/virtio/virtio_ring.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index 8ce6cc73d814..1d51ed46b295 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -205,7 +205,7 @@ struct vring_virtqueue { }; static struct virtqueue *__vring_new_virtqueue(unsigned int index, - struct vring vring, + struct vring_virtqueue_split *vring_split, struct virtio_device *vdev, bool weak_barriers, bool context, @@ -949,6 +949,7 @@ static struct virtqueue *vring_create_virtqueue_split( void (*callback)(struct virtqueue *), const char *name) { + struct vring_virtqueue_split vring_split = {}; struct virtqueue *vq; void *queue = NULL; dma_addr_t dma_addr; @@ -984,10 +985,10 @@ static struct virtqueue *vring_create_virtqueue_split( return NULL; queue_size_in_bytes = vring_size(num, vring_align); - vring_init(&vring, num, queue, vring_align); + vring_init(&vring_split.vring, num, queue, vring_align); - vq = __vring_new_virtqueue(index, vring, vdev, weak_barriers, context, - notify, callback, name); + vq = __vring_new_virtqueue(index, &vring_split, vdev, weak_barriers, + context, notify, callback, name); if (!vq) { vring_free_queue(vdev, queue_size_in_bytes, queue, dma_addr); @@ -2204,7 +2205,7 @@ EXPORT_SYMBOL_GPL(vring_interrupt); /* Only available for split ring */ static struct virtqueue *__vring_new_virtqueue(unsigned int index, - struct vring vring, + struct vring_virtqueue_split *vring_split, struct virtio_device *vdev, bool weak_barriers, bool context, @@ -2246,7 +2247,7 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, vq->split.queue_dma_addr = 0; vq->split.queue_size_in_bytes = 0; - vq->split.vring = vring; + vq->split.vring = vring_split->vring; vq->split.avail_flags_shadow = 0; vq->split.avail_idx_shadow = 0; @@ -2258,21 +2259,21 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, vq->split.avail_flags_shadow); } - vq->split.desc_state = kmalloc_array(vring.num, + vq->split.desc_state = kmalloc_array(vring_split->vring.num, sizeof(struct vring_desc_state_split), GFP_KERNEL); if (!vq->split.desc_state) goto err_state; - vq->split.desc_extra = vring_alloc_desc_extra(vring.num); + vq->split.desc_extra = vring_alloc_desc_extra(vring_split->vring.num); if (!vq->split.desc_extra) goto err_extra; /* Put everything in free lists. */ vq->free_head = 0; - memset(vq->split.desc_state, 0, vring.num * + memset(vq->split.desc_state, 0, vring_split->vring.num * sizeof(struct vring_desc_state_split)); - virtqueue_init(vq, vring.num); + virtqueue_init(vq, vring_split->vring.num); spin_lock(&vdev->vqs_list_lock); list_add_tail(&vq->vq.list, &vdev->vqs); @@ -2322,14 +2323,14 @@ struct virtqueue *vring_new_virtqueue(unsigned int index, void (*callback)(struct virtqueue *vq), const char *name) { - struct vring vring; + struct vring_virtqueue_split vring_split = {}; if (virtio_has_feature(vdev, VIRTIO_F_RING_PACKED)) return NULL; - vring_init(&vring, num, pages, vring_align); - return __vring_new_virtqueue(index, vring, vdev, weak_barriers, context, - notify, callback, name); + vring_init(&vring_split.vring, num, pages, vring_align); + return __vring_new_virtqueue(index, &vring_split, vdev, weak_barriers, + context, notify, callback, name); } EXPORT_SYMBOL_GPL(vring_new_virtqueue);