Commit 4913e854 authored by Xuan Zhuo's avatar Xuan Zhuo Committed by Michael S. Tsirkin
Browse files

virtio_ring: struct virtqueue introduce reset 



Introduce a new member reset to the structure virtqueue to determine
whether the current vq is in the reset state. Subsequent patches will
use it.

Signed-off-by: default avatarXuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
Message-Id: <20220801063902.129329-29-xuanzhuo@linux.alibaba.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent d94587b5

drivers/virtio/virtio_ring.c

+2 −0
Original line number Diff line number Diff line
@@ -1996,6 +1996,7 @@ static struct virtqueue *vring_create_virtqueue_packed( 
	vq->vq.vdev = vdev;

	vq->vq.name = name;

	vq->vq.index = index;

	vq->vq.reset = false;

	vq->we_own_ring = true;

	vq->notify = notify;

	vq->weak_barriers = weak_barriers;
@@ -2481,6 +2482,7 @@ static struct virtqueue *__vring_new_virtqueue(unsigned int index, 
	vq->vq.vdev = vdev;

	vq->vq.name = name;

	vq->vq.index = index;

	vq->vq.reset = false;

	vq->we_own_ring = false;

	vq->notify = notify;

	vq->weak_barriers = weak_barriers;

include/linux/virtio.h

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
 * @index: the zero-based ordinal number for this queue.

 * @num_free: number of elements we expect to be able to fit.

 * @num_max: the maximum number of elements supported by the device.

 * @reset: vq is in reset state or not.

 *

 * A note on @num_free: with indirect buffers, each buffer needs one

 * element in the queue, otherwise a buffer will need one element per
@@ -34,6 +35,7 @@ struct virtqueue { 
	unsigned int num_free;

	unsigned int num_max;

	void *priv;

	bool reset;

};



int virtqueue_add_outbuf(struct virtqueue *vq,