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Message-Id: <20220720030436.79520-27-xuanzhuo@linux.alibaba.com>
Date: Wed, 20 Jul 2022 11:04:22 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: virtualization@...ts.linux-foundation.org
Cc: Richard Weinberger <richard@....at>,
Anton Ivanov <anton.ivanov@...bridgegreys.com>,
Johannes Berg <johannes@...solutions.net>,
"Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Hans de Goede <hdegoede@...hat.com>,
Mark Gross <markgross@...nel.org>,
Vadim Pasternak <vadimp@...dia.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Cornelia Huck <cohuck@...hat.com>,
Halil Pasic <pasic@...ux.ibm.com>,
Eric Farman <farman@...ux.ibm.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>,
Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
Vincent Whitchurch <vincent.whitchurch@...s.com>,
linux-um@...ts.infradead.org, netdev@...r.kernel.org,
platform-driver-x86@...r.kernel.org,
linux-remoteproc@...r.kernel.org, linux-s390@...r.kernel.org,
kvm@...r.kernel.org, bpf@...r.kernel.org,
kangjie.xu@...ux.alibaba.com
Subject: [PATCH v12 26/40] 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: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
---
drivers/virtio/virtio_ring.c | 2 ++
include/linux/virtio.h | 2 ++
2 files changed, 4 insertions(+)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index bf666dad9904..8278b917ad64 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -2011,6 +2011,7 @@ 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;
@@ -2490,6 +2491,7 @@ 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;
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index d45ee82a4470..a3f73bb6733e 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -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,
--
2.31.0
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