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vdpa: Provide interface to read driver features

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Provide an interface to read the negotiated features. This is needed
when building the netlink message in vdpa_dev_net_config_fill().

Also fix the implementation of vdpa_dev_net_config_fill() to use the
negotiated features instead of the device features.

To make APIs clearer, make the following name changes to struct
vdpa_config_ops so they better describe their operations:

get_features -> get_device_features
set_features -> set_driver_features

Finally, add get_driver_features to return the negotiated features and
add implementation to all the upstream drivers.

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20220105114646.577224-2-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Eli Cohen 2022-01-05 13:46:33 +02:00 committed by Michael S. Tsirkin
parent 870aaff92e
commit a64917bc2e
10 changed files with 87 additions and 34 deletions
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16
drivers/vdpa/alibaba/eni_vdpa.c
View File

@ -58,7 +58,7 @@ static struct virtio_pci_legacy_device *vdpa_to_ldev(struct vdpa_device *vdpa)
return &eni_vdpa->ldev;
}
static u64 eni_vdpa_get_features(struct vdpa_device *vdpa)
static u64 eni_vdpa_get_device_features(struct vdpa_device *vdpa)
{
struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
u64 features = vp_legacy_get_features(ldev);
@ -69,7 +69,7 @@ static u64 eni_vdpa_get_features(struct vdpa_device *vdpa)
return features;
}
static int eni_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
static int eni_vdpa_set_driver_features(struct vdpa_device *vdpa, u64 features)
{
struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
@ -84,6 +84,13 @@ static int eni_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
return 0;
}
static u64 eni_vdpa_get_driver_features(struct vdpa_device *vdpa)
{
struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
return vp_legacy_get_driver_features(ldev);
}
static u8 eni_vdpa_get_status(struct vdpa_device *vdpa)
{
struct virtio_pci_legacy_device *ldev = vdpa_to_ldev(vdpa);
@ -401,8 +408,9 @@ static void eni_vdpa_set_config_cb(struct vdpa_device *vdpa,
}
static const struct vdpa_config_ops eni_vdpa_ops = {
.get_features = eni_vdpa_get_features,
.set_features = eni_vdpa_set_features,
.get_device_features = eni_vdpa_get_device_features,
.set_driver_features = eni_vdpa_set_driver_features,
.get_driver_features = eni_vdpa_get_driver_features,
.get_status = eni_vdpa_get_status,
.set_status = eni_vdpa_set_status,
.reset = eni_vdpa_reset,

16
drivers/vdpa/ifcvf/ifcvf_main.c
View File

@ -169,7 +169,7 @@ static struct ifcvf_hw *vdpa_to_vf(struct vdpa_device *vdpa_dev)
return &adapter->vf;
}
static u64 ifcvf_vdpa_get_features(struct vdpa_device *vdpa_dev)
static u64 ifcvf_vdpa_get_device_features(struct vdpa_device *vdpa_dev)
{
struct ifcvf_adapter *adapter = vdpa_to_adapter(vdpa_dev);
struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
@ -187,7 +187,7 @@ static u64 ifcvf_vdpa_get_features(struct vdpa_device *vdpa_dev)
return features;
}
static int ifcvf_vdpa_set_features(struct vdpa_device *vdpa_dev, u64 features)
static int ifcvf_vdpa_set_driver_features(struct vdpa_device *vdpa_dev, u64 features)
{
struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
int ret;
@ -201,6 +201,13 @@ static int ifcvf_vdpa_set_features(struct vdpa_device *vdpa_dev, u64 features)
return 0;
}
static u64 ifcvf_vdpa_get_driver_features(struct vdpa_device *vdpa_dev)
{
struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
return vf->req_features;
}
static u8 ifcvf_vdpa_get_status(struct vdpa_device *vdpa_dev)
{
struct ifcvf_hw *vf = vdpa_to_vf(vdpa_dev);
@ -426,8 +433,9 @@ static struct vdpa_notification_area ifcvf_get_vq_notification(struct vdpa_devic
* implemented set_map()/dma_map()/dma_unmap()
*/
static const struct vdpa_config_ops ifc_vdpa_ops = {
.get_features = ifcvf_vdpa_get_features,
.set_features = ifcvf_vdpa_set_features,
.get_device_features = ifcvf_vdpa_get_device_features,
.set_driver_features = ifcvf_vdpa_set_driver_features,
.get_driver_features = ifcvf_vdpa_get_driver_features,
.get_status = ifcvf_vdpa_get_status,
.set_status = ifcvf_vdpa_set_status,
.reset = ifcvf_vdpa_reset,

16
drivers/vdpa/mlx5/net/mlx5_vnet.c
View File

@ -1878,7 +1878,7 @@ static u64 mlx_to_vritio_features(u16 dev_features)
return result;
}
static u64 mlx5_vdpa_get_features(struct vdpa_device *vdev)
static u64 mlx5_vdpa_get_device_features(struct vdpa_device *vdev)
{
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
@ -1971,7 +1971,7 @@ static void update_cvq_info(struct mlx5_vdpa_dev *mvdev)
}
}
static int mlx5_vdpa_set_features(struct vdpa_device *vdev, u64 features)
static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 features)
{
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
@ -2338,6 +2338,13 @@ static int mlx5_get_vq_irq(struct vdpa_device *vdv, u16 idx)
return -EOPNOTSUPP;
}
static u64 mlx5_vdpa_get_driver_features(struct vdpa_device *vdev)
{
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
return mvdev->actual_features;
}
static const struct vdpa_config_ops mlx5_vdpa_ops = {
.set_vq_address = mlx5_vdpa_set_vq_address,
.set_vq_num = mlx5_vdpa_set_vq_num,
@ -2350,8 +2357,9 @@ static const struct vdpa_config_ops mlx5_vdpa_ops = {
.get_vq_notification = mlx5_get_vq_notification,
.get_vq_irq = mlx5_get_vq_irq,
.get_vq_align = mlx5_vdpa_get_vq_align,
.get_features = mlx5_vdpa_get_features,
.set_features = mlx5_vdpa_set_features,
.get_device_features = mlx5_vdpa_get_device_features,
.set_driver_features = mlx5_vdpa_set_driver_features,
.get_driver_features = mlx5_vdpa_get_driver_features,
.set_config_cb = mlx5_vdpa_set_config_cb,
.get_vq_num_max = mlx5_vdpa_get_vq_num_max,
.get_device_id = mlx5_vdpa_get_device_id,

2
drivers/vdpa/vdpa.c
View File

@ -808,7 +808,7 @@ static int vdpa_dev_net_config_fill(struct vdpa_device *vdev, struct sk_buff *ms
if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_CFG_MTU, val_u16))
return -EMSGSIZE;
features = vdev->config->get_features(vdev);
features = vdev->config->get_driver_features(vdev);
return vdpa_dev_net_mq_config_fill(vdev, msg, features, &config);
}

21
drivers/vdpa/vdpa_sim/vdpa_sim.c
View File

@ -399,14 +399,14 @@ static u32 vdpasim_get_vq_align(struct vdpa_device *vdpa)
return VDPASIM_QUEUE_ALIGN;
}
static u64 vdpasim_get_features(struct vdpa_device *vdpa)
static u64 vdpasim_get_device_features(struct vdpa_device *vdpa)
{
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
return vdpasim->dev_attr.supported_features;
}
static int vdpasim_set_features(struct vdpa_device *vdpa, u64 features)
static int vdpasim_set_driver_features(struct vdpa_device *vdpa, u64 features)
{
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
@ -419,6 +419,13 @@ static int vdpasim_set_features(struct vdpa_device *vdpa, u64 features)
return 0;
}
static u64 vdpasim_get_driver_features(struct vdpa_device *vdpa)
{
struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
return vdpasim->features;
}
static void vdpasim_set_config_cb(struct vdpa_device *vdpa,
struct vdpa_callback *cb)
{
@ -613,8 +620,9 @@ static const struct vdpa_config_ops vdpasim_config_ops = {
.set_vq_state = vdpasim_set_vq_state,
.get_vq_state = vdpasim_get_vq_state,
.get_vq_align = vdpasim_get_vq_align,
.get_features = vdpasim_get_features,
.set_features = vdpasim_set_features,
.get_device_features = vdpasim_get_device_features,
.set_driver_features = vdpasim_set_driver_features,
.get_driver_features = vdpasim_get_driver_features,
.set_config_cb = vdpasim_set_config_cb,
.get_vq_num_max = vdpasim_get_vq_num_max,
.get_device_id = vdpasim_get_device_id,
@ -642,8 +650,9 @@ static const struct vdpa_config_ops vdpasim_batch_config_ops = {
.set_vq_state = vdpasim_set_vq_state,
.get_vq_state = vdpasim_get_vq_state,
.get_vq_align = vdpasim_get_vq_align,
.get_features = vdpasim_get_features,
.set_features = vdpasim_set_features,
.get_device_features = vdpasim_get_device_features,
.set_driver_features = vdpasim_set_driver_features,
.get_driver_features = vdpasim_get_driver_features,
.set_config_cb = vdpasim_set_config_cb,
.get_vq_num_max = vdpasim_get_vq_num_max,
.get_device_id = vdpasim_get_device_id,

16
drivers/vdpa/vdpa_user/vduse_dev.c
View File

@ -573,14 +573,14 @@ static u32 vduse_vdpa_get_vq_align(struct vdpa_device *vdpa)
return dev->vq_align;
}
static u64 vduse_vdpa_get_features(struct vdpa_device *vdpa)
static u64 vduse_vdpa_get_device_features(struct vdpa_device *vdpa)
{
struct vduse_dev *dev = vdpa_to_vduse(vdpa);
return dev->device_features;
}
static int vduse_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
static int vduse_vdpa_set_driver_features(struct vdpa_device *vdpa, u64 features)
{
struct vduse_dev *dev = vdpa_to_vduse(vdpa);
@ -588,6 +588,13 @@ static int vduse_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
return 0;
}
static u64 vduse_vdpa_get_driver_features(struct vdpa_device *vdpa)
{
struct vduse_dev *dev = vdpa_to_vduse(vdpa);
return dev->driver_features;
}
static void vduse_vdpa_set_config_cb(struct vdpa_device *vdpa,
struct vdpa_callback *cb)
{
@ -721,8 +728,9 @@ static const struct vdpa_config_ops vduse_vdpa_config_ops = {
.set_vq_state = vduse_vdpa_set_vq_state,
.get_vq_state = vduse_vdpa_get_vq_state,
.get_vq_align = vduse_vdpa_get_vq_align,
.get_features = vduse_vdpa_get_features,
.set_features = vduse_vdpa_set_features,
.get_device_features = vduse_vdpa_get_device_features,
.set_driver_features = vduse_vdpa_set_driver_features,
.get_driver_features = vduse_vdpa_get_driver_features,
.set_config_cb = vduse_vdpa_set_config_cb,
.get_vq_num_max = vduse_vdpa_get_vq_num_max,
.get_device_id = vduse_vdpa_get_device_id,

16
drivers/vdpa/virtio_pci/vp_vdpa.c
View File

@ -53,14 +53,14 @@ static struct virtio_pci_modern_device *vdpa_to_mdev(struct vdpa_device *vdpa)
return &vp_vdpa->mdev;
}
static u64 vp_vdpa_get_features(struct vdpa_device *vdpa)
static u64 vp_vdpa_get_device_features(struct vdpa_device *vdpa)
{
struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
return vp_modern_get_features(mdev);
}
static int vp_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
static int vp_vdpa_set_driver_features(struct vdpa_device *vdpa, u64 features)
{
struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
@ -69,6 +69,13 @@ static int vp_vdpa_set_features(struct vdpa_device *vdpa, u64 features)
return 0;
}
static u64 vp_vdpa_get_driver_features(struct vdpa_device *vdpa)
{
struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
return vp_modern_get_driver_features(mdev);
}
static u8 vp_vdpa_get_status(struct vdpa_device *vdpa)
{
struct virtio_pci_modern_device *mdev = vdpa_to_mdev(vdpa);
@ -415,8 +422,9 @@ vp_vdpa_get_vq_notification(struct vdpa_device *vdpa, u16 qid)
}
static const struct vdpa_config_ops vp_vdpa_ops = {
.get_features = vp_vdpa_get_features,
.set_features = vp_vdpa_set_features,
.get_device_features = vp_vdpa_get_device_features,
.set_driver_features = vp_vdpa_set_driver_features,
.get_driver_features = vp_vdpa_get_driver_features,
.get_status = vp_vdpa_get_status,
.set_status = vp_vdpa_set_status,
.reset = vp_vdpa_reset,

2
drivers/vhost/vdpa.c
View File

@ -262,7 +262,7 @@ static long vhost_vdpa_get_features(struct vhost_vdpa *v, u64 __user *featurep)
const struct vdpa_config_ops *ops = vdpa->config;
u64 features;
features = ops->get_features(vdpa);
features = ops->get_device_features(vdpa);
if (copy_to_user(featurep, &features, sizeof(features)))
return -EFAULT;

2
drivers/virtio/virtio_vdpa.c
View File

@ -308,7 +308,7 @@ static u64 virtio_vdpa_get_features(struct virtio_device *vdev)
struct vdpa_device *vdpa = vd_get_vdpa(vdev);
const struct vdpa_config_ops *ops = vdpa->config;
return ops->get_features(vdpa);
return ops->get_device_features(vdpa);
}
static int virtio_vdpa_finalize_features(struct virtio_device *vdev)

14
include/linux/vdpa.h
View File

@ -171,14 +171,17 @@ struct vdpa_map_file {
* for the device
* @vdev: vdpa device
* Returns virtqueue algin requirement
* @get_features: Get virtio features supported by the device
* @get_device_features: Get virtio features supported by the device
* @vdev: vdpa device
* Returns the virtio features support by the
* device
* @set_features: Set virtio features supported by the driver
* @set_driver_features: Set virtio features supported by the driver
* @vdev: vdpa device
* @features: feature support by the driver
* Returns integer: success (0) or error (< 0)
* @get_driver_features: Get the virtio driver features in action
* @vdev: vdpa device
* Returns the virtio features accepted
* @set_config_cb: Set the config interrupt callback
* @vdev: vdpa device
* @cb: virtio-vdev interrupt callback structure
@ -278,8 +281,9 @@ struct vdpa_config_ops {
/* Device ops */
u32 (*get_vq_align)(struct vdpa_device *vdev);
u64 (*get_features)(struct vdpa_device *vdev);
int (*set_features)(struct vdpa_device *vdev, u64 features);
u64 (*get_device_features)(struct vdpa_device *vdev);
int (*set_driver_features)(struct vdpa_device *vdev, u64 features);
u64 (*get_driver_features)(struct vdpa_device *vdev);
void (*set_config_cb)(struct vdpa_device *vdev,
struct vdpa_callback *cb);
u16 (*get_vq_num_max)(struct vdpa_device *vdev);
@ -397,7 +401,7 @@ static inline int vdpa_set_features(struct vdpa_device *vdev, u64 features)
const struct vdpa_config_ops *ops = vdev->config;
vdev->features_valid = true;
return ops->set_features(vdev, features);
return ops->set_driver_features(vdev, features);
}
void vdpa_get_config(struct vdpa_device *vdev, unsigned int offset,