Xuan Zhuo
2022-Jun-29 06:56 UTC
[PATCH v11 01/40] virtio: add helper virtqueue_get_vring_max_size()
Record the maximum queue num supported by the device.
virtio-net can display the maximum (supported by hardware) ring size in
ethtool -g eth0.
When the subsequent patch implements vring reset, it can judge whether
the ring size passed by the driver is legal based on this.
Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com>
---
arch/um/drivers/virtio_uml.c | 1 +
drivers/platform/mellanox/mlxbf-tmfifo.c | 2 ++
drivers/remoteproc/remoteproc_virtio.c | 2 ++
drivers/s390/virtio/virtio_ccw.c | 3 +++
drivers/virtio/virtio_mmio.c | 2 ++
drivers/virtio/virtio_pci_legacy.c | 2 ++
drivers/virtio/virtio_pci_modern.c | 2 ++
drivers/virtio/virtio_ring.c | 14 ++++++++++++++
drivers/virtio/virtio_vdpa.c | 2 ++
include/linux/virtio.h | 2 ++
10 files changed, 32 insertions(+)
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index 82ff3785bf69..e719af8bdf56 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -958,6 +958,7 @@ static struct virtqueue *vu_setup_vq(struct virtio_device
*vdev,
goto error_create;
}
vq->priv = info;
+ vq->num_max = num;
num = virtqueue_get_vring_size(vq);
if (vu_dev->protocol_features &
diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c
b/drivers/platform/mellanox/mlxbf-tmfifo.c
index 38800e86ed8a..1ae3c56b66b0 100644
--- a/drivers/platform/mellanox/mlxbf-tmfifo.c
+++ b/drivers/platform/mellanox/mlxbf-tmfifo.c
@@ -959,6 +959,8 @@ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device
*vdev,
goto error;
}
+ vq->num_max = vring->num;
+
vqs[i] = vq;
vring->vq = vq;
vq->priv = vring;
diff --git a/drivers/remoteproc/remoteproc_virtio.c
b/drivers/remoteproc/remoteproc_virtio.c
index d43d74733f0a..0f7706e23eb9 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -125,6 +125,8 @@ static struct virtqueue *rp_find_vq(struct virtio_device
*vdev,
return ERR_PTR(-ENOMEM);
}
+ vq->num_max = num;
+
rvring->vq = vq;
vq->priv = rvring;
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 161d3b141f0d..6b86d0280d6b 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -530,6 +530,9 @@ static struct virtqueue *virtio_ccw_setup_vq(struct
virtio_device *vdev,
err = -ENOMEM;
goto out_err;
}
+
+ vq->num_max = info->num;
+
/* it may have been reduced */
info->num = virtqueue_get_vring_size(vq);
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 083ff1eb743d..a20d5a6b5819 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -403,6 +403,8 @@ static struct virtqueue *vm_setup_vq(struct virtio_device
*vdev, unsigned int in
goto error_new_virtqueue;
}
+ vq->num_max = num;
+
/* Activate the queue */
writel(virtqueue_get_vring_size(vq), vm_dev->base + VIRTIO_MMIO_QUEUE_NUM);
if (vm_dev->version == 1) {
diff --git a/drivers/virtio/virtio_pci_legacy.c
b/drivers/virtio/virtio_pci_legacy.c
index a5e5721145c7..2257f1b3d8ae 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -135,6 +135,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device
*vp_dev,
if (!vq)
return ERR_PTR(-ENOMEM);
+ vq->num_max = num;
+
q_pfn = virtqueue_get_desc_addr(vq) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT;
if (q_pfn >> 32) {
dev_err(&vp_dev->pci_dev->dev,
diff --git a/drivers/virtio/virtio_pci_modern.c
b/drivers/virtio/virtio_pci_modern.c
index 623906b4996c..e7e0b8c850f6 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -218,6 +218,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device
*vp_dev,
if (!vq)
return ERR_PTR(-ENOMEM);
+ vq->num_max = num;
+
/* activate the queue */
vp_modern_set_queue_size(mdev, index, virtqueue_get_vring_size(vq));
vp_modern_queue_address(mdev, index, virtqueue_get_desc_addr(vq),
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index a5ec724c01d8..4cac600856ad 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -2385,6 +2385,20 @@ void vring_transport_features(struct virtio_device *vdev)
}
EXPORT_SYMBOL_GPL(vring_transport_features);
+/**
+ * virtqueue_get_vring_max_size - return the max size of the virtqueue's
vring
+ * @_vq: the struct virtqueue containing the vring of interest.
+ *
+ * Returns the max size of the vring.
+ *
+ * Unlike other operations, this need not be serialized.
+ */
+unsigned int virtqueue_get_vring_max_size(struct virtqueue *_vq)
+{
+ return _vq->num_max;
+}
+EXPORT_SYMBOL_GPL(virtqueue_get_vring_max_size);
+
/**
* virtqueue_get_vring_size - return the size of the virtqueue's vring
* @_vq: the struct virtqueue containing the vring of interest.
diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c
index c40f7deb6b5a..9670cc79371d 100644
--- a/drivers/virtio/virtio_vdpa.c
+++ b/drivers/virtio/virtio_vdpa.c
@@ -183,6 +183,8 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned
int index,
goto error_new_virtqueue;
}
+ vq->num_max = max_num;
+
/* Setup virtqueue callback */
cb.callback = callback ? virtio_vdpa_virtqueue_cb : NULL;
cb.private = info;
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index d8fdf170637c..a82620032e43 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -31,6 +31,7 @@ struct virtqueue {
struct virtio_device *vdev;
unsigned int index;
unsigned int num_free;
+ unsigned int num_max;
void *priv;
};
@@ -80,6 +81,7 @@ bool virtqueue_enable_cb_delayed(struct virtqueue *vq);
void *virtqueue_detach_unused_buf(struct virtqueue *vq);
+unsigned int virtqueue_get_vring_max_size(struct virtqueue *vq);
unsigned int virtqueue_get_vring_size(struct virtqueue *vq);
bool virtqueue_is_broken(struct virtqueue *vq);
--
2.31.0
Jason Wang
2022-Jun-30 06:35 UTC
[PATCH v11 01/40] virtio: add helper virtqueue_get_vring_max_size()
On Wed, Jun 29, 2022 at 2:57 PM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote:> > Record the maximum queue num supported by the device. > > virtio-net can display the maximum (supported by hardware) ring size in > ethtool -g eth0. > > When the subsequent patch implements vring reset, it can judge whether > the ring size passed by the driver is legal based on this. > > Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com> > --- > arch/um/drivers/virtio_uml.c | 1 + > drivers/platform/mellanox/mlxbf-tmfifo.c | 2 ++ > drivers/remoteproc/remoteproc_virtio.c | 2 ++ > drivers/s390/virtio/virtio_ccw.c | 3 +++ > drivers/virtio/virtio_mmio.c | 2 ++ > drivers/virtio/virtio_pci_legacy.c | 2 ++ > drivers/virtio/virtio_pci_modern.c | 2 ++ > drivers/virtio/virtio_ring.c | 14 ++++++++++++++ > drivers/virtio/virtio_vdpa.c | 2 ++ > include/linux/virtio.h | 2 ++ > 10 files changed, 32 insertions(+) > > diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c > index 82ff3785bf69..e719af8bdf56 100644 > --- a/arch/um/drivers/virtio_uml.c > +++ b/arch/um/drivers/virtio_uml.c > @@ -958,6 +958,7 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev, > goto error_create; > } > vq->priv = info; > + vq->num_max = num; > num = virtqueue_get_vring_size(vq); > > if (vu_dev->protocol_features & > diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c b/drivers/platform/mellanox/mlxbf-tmfifo.c > index 38800e86ed8a..1ae3c56b66b0 100644 > --- a/drivers/platform/mellanox/mlxbf-tmfifo.c > +++ b/drivers/platform/mellanox/mlxbf-tmfifo.c > @@ -959,6 +959,8 @@ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device *vdev, > goto error; > } > > + vq->num_max = vring->num; > + > vqs[i] = vq; > vring->vq = vq; > vq->priv = vring; > diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c > index d43d74733f0a..0f7706e23eb9 100644 > --- a/drivers/remoteproc/remoteproc_virtio.c > +++ b/drivers/remoteproc/remoteproc_virtio.c > @@ -125,6 +125,8 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev, > return ERR_PTR(-ENOMEM); > } > > + vq->num_max = num; > + > rvring->vq = vq; > vq->priv = rvring; > > diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > index 161d3b141f0d..6b86d0280d6b 100644 > --- a/drivers/s390/virtio/virtio_ccw.c > +++ b/drivers/s390/virtio/virtio_ccw.c > @@ -530,6 +530,9 @@ static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, > err = -ENOMEM; > goto out_err; > } > + > + vq->num_max = info->num; > + > /* it may have been reduced */ > info->num = virtqueue_get_vring_size(vq); > > diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > index 083ff1eb743d..a20d5a6b5819 100644 > --- a/drivers/virtio/virtio_mmio.c > +++ b/drivers/virtio/virtio_mmio.c > @@ -403,6 +403,8 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int in > goto error_new_virtqueue; > } > > + vq->num_max = num; > + > /* Activate the queue */ > writel(virtqueue_get_vring_size(vq), vm_dev->base + VIRTIO_MMIO_QUEUE_NUM); > if (vm_dev->version == 1) { > diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c > index a5e5721145c7..2257f1b3d8ae 100644 > --- a/drivers/virtio/virtio_pci_legacy.c > +++ b/drivers/virtio/virtio_pci_legacy.c > @@ -135,6 +135,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, > if (!vq) > return ERR_PTR(-ENOMEM); > > + vq->num_max = num; > + > q_pfn = virtqueue_get_desc_addr(vq) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; > if (q_pfn >> 32) { > dev_err(&vp_dev->pci_dev->dev, > diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c > index 623906b4996c..e7e0b8c850f6 100644 > --- a/drivers/virtio/virtio_pci_modern.c > +++ b/drivers/virtio/virtio_pci_modern.c > @@ -218,6 +218,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, > if (!vq) > return ERR_PTR(-ENOMEM); > > + vq->num_max = num; > + > /* activate the queue */ > vp_modern_set_queue_size(mdev, index, virtqueue_get_vring_size(vq)); > vp_modern_queue_address(mdev, index, virtqueue_get_desc_addr(vq), > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > index a5ec724c01d8..4cac600856ad 100644 > --- a/drivers/virtio/virtio_ring.c > +++ b/drivers/virtio/virtio_ring.c > @@ -2385,6 +2385,20 @@ void vring_transport_features(struct virtio_device *vdev) > } > EXPORT_SYMBOL_GPL(vring_transport_features); > > +/** > + * virtqueue_get_vring_max_size - return the max size of the virtqueue's vring > + * @_vq: the struct virtqueue containing the vring of interest. > + * > + * Returns the max size of the vring. > + * > + * Unlike other operations, this need not be serialized. > + */ > +unsigned int virtqueue_get_vring_max_size(struct virtqueue *_vq) > +{ > + return _vq->num_max; > +} > +EXPORT_SYMBOL_GPL(virtqueue_get_vring_max_size); > + > /** > * virtqueue_get_vring_size - return the size of the virtqueue's vring > * @_vq: the struct virtqueue containing the vring of interest. > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c > index c40f7deb6b5a..9670cc79371d 100644 > --- a/drivers/virtio/virtio_vdpa.c > +++ b/drivers/virtio/virtio_vdpa.c > @@ -183,6 +183,8 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, > goto error_new_virtqueue; > } > > + vq->num_max = max_num; > + > /* Setup virtqueue callback */ > cb.callback = callback ? virtio_vdpa_virtqueue_cb : NULL; > cb.private = info; > diff --git a/include/linux/virtio.h b/include/linux/virtio.h > index d8fdf170637c..a82620032e43 100644 > --- a/include/linux/virtio.h > +++ b/include/linux/virtio.h > @@ -31,6 +31,7 @@ struct virtqueue { > struct virtio_device *vdev; > unsigned int index; > unsigned int num_free; > + unsigned int num_max;A question, since we export virtqueue to drivers, this means they can access vq->num_max directly. So we probably don't need a helper here. Thanks> void *priv; > }; > > @@ -80,6 +81,7 @@ bool virtqueue_enable_cb_delayed(struct virtqueue *vq); > > void *virtqueue_detach_unused_buf(struct virtqueue *vq); > > +unsigned int virtqueue_get_vring_max_size(struct virtqueue *vq); > unsigned int virtqueue_get_vring_size(struct virtqueue *vq); > > bool virtqueue_is_broken(struct virtqueue *vq); > -- > 2.31.0 >
Xuan Zhuo
2022-Jul-01 06:43 UTC
[PATCH v11 01/40] virtio: add helper virtqueue_get_vring_max_size()
On Thu, 30 Jun 2022 14:35:38 +0800, Jason Wang <jasowang at redhat.com> wrote:> On Wed, Jun 29, 2022 at 2:57 PM Xuan Zhuo <xuanzhuo at linux.alibaba.com> wrote: > > > > Record the maximum queue num supported by the device. > > > > virtio-net can display the maximum (supported by hardware) ring size in > > ethtool -g eth0. > > > > When the subsequent patch implements vring reset, it can judge whether > > the ring size passed by the driver is legal based on this. > > > > Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com> > > --- > > arch/um/drivers/virtio_uml.c | 1 + > > drivers/platform/mellanox/mlxbf-tmfifo.c | 2 ++ > > drivers/remoteproc/remoteproc_virtio.c | 2 ++ > > drivers/s390/virtio/virtio_ccw.c | 3 +++ > > drivers/virtio/virtio_mmio.c | 2 ++ > > drivers/virtio/virtio_pci_legacy.c | 2 ++ > > drivers/virtio/virtio_pci_modern.c | 2 ++ > > drivers/virtio/virtio_ring.c | 14 ++++++++++++++ > > drivers/virtio/virtio_vdpa.c | 2 ++ > > include/linux/virtio.h | 2 ++ > > 10 files changed, 32 insertions(+) > > > > diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c > > index 82ff3785bf69..e719af8bdf56 100644 > > --- a/arch/um/drivers/virtio_uml.c > > +++ b/arch/um/drivers/virtio_uml.c > > @@ -958,6 +958,7 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev, > > goto error_create; > > } > > vq->priv = info; > > + vq->num_max = num; > > num = virtqueue_get_vring_size(vq); > > > > if (vu_dev->protocol_features & > > diff --git a/drivers/platform/mellanox/mlxbf-tmfifo.c b/drivers/platform/mellanox/mlxbf-tmfifo.c > > index 38800e86ed8a..1ae3c56b66b0 100644 > > --- a/drivers/platform/mellanox/mlxbf-tmfifo.c > > +++ b/drivers/platform/mellanox/mlxbf-tmfifo.c > > @@ -959,6 +959,8 @@ static int mlxbf_tmfifo_virtio_find_vqs(struct virtio_device *vdev, > > goto error; > > } > > > > + vq->num_max = vring->num; > > + > > vqs[i] = vq; > > vring->vq = vq; > > vq->priv = vring; > > diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c > > index d43d74733f0a..0f7706e23eb9 100644 > > --- a/drivers/remoteproc/remoteproc_virtio.c > > +++ b/drivers/remoteproc/remoteproc_virtio.c > > @@ -125,6 +125,8 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev, > > return ERR_PTR(-ENOMEM); > > } > > > > + vq->num_max = num; > > + > > rvring->vq = vq; > > vq->priv = rvring; > > > > diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > > index 161d3b141f0d..6b86d0280d6b 100644 > > --- a/drivers/s390/virtio/virtio_ccw.c > > +++ b/drivers/s390/virtio/virtio_ccw.c > > @@ -530,6 +530,9 @@ static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, > > err = -ENOMEM; > > goto out_err; > > } > > + > > + vq->num_max = info->num; > > + > > /* it may have been reduced */ > > info->num = virtqueue_get_vring_size(vq); > > > > diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c > > index 083ff1eb743d..a20d5a6b5819 100644 > > --- a/drivers/virtio/virtio_mmio.c > > +++ b/drivers/virtio/virtio_mmio.c > > @@ -403,6 +403,8 @@ static struct virtqueue *vm_setup_vq(struct virtio_device *vdev, unsigned int in > > goto error_new_virtqueue; > > } > > > > + vq->num_max = num; > > + > > /* Activate the queue */ > > writel(virtqueue_get_vring_size(vq), vm_dev->base + VIRTIO_MMIO_QUEUE_NUM); > > if (vm_dev->version == 1) { > > diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c > > index a5e5721145c7..2257f1b3d8ae 100644 > > --- a/drivers/virtio/virtio_pci_legacy.c > > +++ b/drivers/virtio/virtio_pci_legacy.c > > @@ -135,6 +135,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, > > if (!vq) > > return ERR_PTR(-ENOMEM); > > > > + vq->num_max = num; > > + > > q_pfn = virtqueue_get_desc_addr(vq) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT; > > if (q_pfn >> 32) { > > dev_err(&vp_dev->pci_dev->dev, > > diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c > > index 623906b4996c..e7e0b8c850f6 100644 > > --- a/drivers/virtio/virtio_pci_modern.c > > +++ b/drivers/virtio/virtio_pci_modern.c > > @@ -218,6 +218,8 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev, > > if (!vq) > > return ERR_PTR(-ENOMEM); > > > > + vq->num_max = num; > > + > > /* activate the queue */ > > vp_modern_set_queue_size(mdev, index, virtqueue_get_vring_size(vq)); > > vp_modern_queue_address(mdev, index, virtqueue_get_desc_addr(vq), > > diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c > > index a5ec724c01d8..4cac600856ad 100644 > > --- a/drivers/virtio/virtio_ring.c > > +++ b/drivers/virtio/virtio_ring.c > > @@ -2385,6 +2385,20 @@ void vring_transport_features(struct virtio_device *vdev) > > } > > EXPORT_SYMBOL_GPL(vring_transport_features); > > > > +/** > > + * virtqueue_get_vring_max_size - return the max size of the virtqueue's vring > > + * @_vq: the struct virtqueue containing the vring of interest. > > + * > > + * Returns the max size of the vring. > > + * > > + * Unlike other operations, this need not be serialized. > > + */ > > +unsigned int virtqueue_get_vring_max_size(struct virtqueue *_vq) > > +{ > > + return _vq->num_max; > > +} > > +EXPORT_SYMBOL_GPL(virtqueue_get_vring_max_size); > > + > > /** > > * virtqueue_get_vring_size - return the size of the virtqueue's vring > > * @_vq: the struct virtqueue containing the vring of interest. > > diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c > > index c40f7deb6b5a..9670cc79371d 100644 > > --- a/drivers/virtio/virtio_vdpa.c > > +++ b/drivers/virtio/virtio_vdpa.c > > @@ -183,6 +183,8 @@ virtio_vdpa_setup_vq(struct virtio_device *vdev, unsigned int index, > > goto error_new_virtqueue; > > } > > > > + vq->num_max = max_num; > > + > > /* Setup virtqueue callback */ > > cb.callback = callback ? virtio_vdpa_virtqueue_cb : NULL; > > cb.private = info; > > diff --git a/include/linux/virtio.h b/include/linux/virtio.h > > index d8fdf170637c..a82620032e43 100644 > > --- a/include/linux/virtio.h > > +++ b/include/linux/virtio.h > > @@ -31,6 +31,7 @@ struct virtqueue { > > struct virtio_device *vdev; > > unsigned int index; > > unsigned int num_free; > > + unsigned int num_max; > > A question, since we export virtqueue to drivers, this means they can > access vq->num_max directly. > > So we probably don't need a helper here.I think you are right. Thanks.> > Thanks > > > void *priv; > > }; > > > > @@ -80,6 +81,7 @@ bool virtqueue_enable_cb_delayed(struct virtqueue *vq); > > > > void *virtqueue_detach_unused_buf(struct virtqueue *vq); > > > > +unsigned int virtqueue_get_vring_max_size(struct virtqueue *vq); > > unsigned int virtqueue_get_vring_size(struct virtqueue *vq); > > > > bool virtqueue_is_broken(struct virtqueue *vq); > > -- > > 2.31.0 > > >