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Date: Wed, 26 Jan 2022 15:35:28 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org
Cc: "Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Jesper Dangaard Brouer <hawk@...nel.org>,
John Fastabend <john.fastabend@...il.com>, bpf@...r.kernel.org
Subject: [PATCH v3 12/17] virtio_pci: queue_reset: setup_vq use vring_setup_virtqueue()
setup_vq replaces vring_create_virtuque() with vring_setup_virtqueue() to
support the need to enable reset vq.
Signed-off-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
---
drivers/virtio/virtio_pci_common.c | 8 ++++----
drivers/virtio/virtio_pci_common.h | 4 +++-
drivers/virtio/virtio_pci_legacy.c | 5 +++--
drivers/virtio/virtio_pci_modern.c | 20 ++++++++++++++------
4 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 6b2573ec1ae8..c02936d29a31 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -209,7 +209,7 @@ static struct virtqueue *vp_setup_vq(struct virtio_device *vdev, unsigned index,
void (*callback)(struct virtqueue *vq),
const char *name,
bool ctx,
- u16 msix_vec)
+ u16 msix_vec, u16 num)
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
struct virtio_pci_vq_info *info = kmalloc(sizeof *info, GFP_KERNEL);
@@ -221,7 +221,7 @@ static struct virtqueue *vp_setup_vq(struct virtio_device *vdev, unsigned index,
return ERR_PTR(-ENOMEM);
vq = vp_dev->setup_vq(vp_dev, info, index, callback, name, ctx,
- msix_vec);
+ msix_vec, NULL, num);
if (IS_ERR(vq))
goto out_info;
@@ -368,7 +368,7 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned nvqs,
msix_vec = VP_MSIX_VQ_VECTOR;
vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
ctx ? ctx[i] : false,
- msix_vec);
+ msix_vec, 0);
if (IS_ERR(vqs[i])) {
err = PTR_ERR(vqs[i]);
goto error_find;
@@ -423,7 +423,7 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned nvqs,
}
vqs[i] = vp_setup_vq(vdev, queue_idx++, callbacks[i], names[i],
ctx ? ctx[i] : false,
- VIRTIO_MSI_NO_VECTOR);
+ VIRTIO_MSI_NO_VECTOR, 0);
if (IS_ERR(vqs[i])) {
err = PTR_ERR(vqs[i]);
goto out_del_vqs;
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index 392d990b7c73..65db92245e41 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h
@@ -84,7 +84,9 @@ struct virtio_pci_device {
void (*callback)(struct virtqueue *vq),
const char *name,
bool ctx,
- u16 msix_vec);
+ u16 msix_vec,
+ struct virtqueue *vq,
+ u16 num);
void (*del_vq)(struct virtio_pci_vq_info *info);
u16 (*config_vector)(struct virtio_pci_device *vp_dev, u16 vector);
diff --git a/drivers/virtio/virtio_pci_legacy.c b/drivers/virtio/virtio_pci_legacy.c
index b3f8128b7983..9bc41b764624 100644
--- a/drivers/virtio/virtio_pci_legacy.c
+++ b/drivers/virtio/virtio_pci_legacy.c
@@ -113,9 +113,10 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
void (*callback)(struct virtqueue *vq),
const char *name,
bool ctx,
- u16 msix_vec)
+ u16 msix_vec,
+ struct virtqueue *vq,
+ u16 ring_num)
{
- struct virtqueue *vq;
u16 num;
int err;
u64 q_pfn;
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index 5455bc041fb6..2ce58de549de 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -187,11 +187,12 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
void (*callback)(struct virtqueue *vq),
const char *name,
bool ctx,
- u16 msix_vec)
+ u16 msix_vec,
+ struct virtqueue *vq,
+ u16 ring_num)
{
struct virtio_pci_modern_device *mdev = &vp_dev->mdev;
- struct virtqueue *vq;
u16 num;
int err;
@@ -203,6 +204,13 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
if (!num || vp_modern_get_queue_enable(mdev, index))
return ERR_PTR(-ENOENT);
+ if (ring_num) {
+ if (ring_num > num)
+ return ERR_PTR(-ENOENT);
+
+ num = ring_num;
+ }
+
if (num & (num - 1)) {
dev_warn(&vp_dev->pci_dev->dev, "bad queue size %u", num);
return ERR_PTR(-EINVAL);
@@ -211,10 +219,10 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
info->msix_vector = msix_vec;
/* create the vring */
- vq = vring_create_virtqueue(index, num,
- SMP_CACHE_BYTES, &vp_dev->vdev,
- true, true, ctx,
- vp_notify, callback, name);
+ vq = vring_setup_virtqueue(index, num,
+ SMP_CACHE_BYTES, &vp_dev->vdev,
+ true, true, ctx,
+ vp_notify, callback, name, vq);
if (!vq)
return ERR_PTR(-ENOMEM);
--
2.31.0
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