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vdpa/mlx5: Report max device capabilities

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Configure max supported virtqueues and features on the management
device.
This info can be retrieved using:

$ vdpa mgmtdev show
auxiliary/mlx5_core.sf.1:
  supported_classes net
  max_supported_vqs 257
  dev_features CSUM GUEST_CSUM MTU HOST_TSO4 HOST_TSO6 STATUS CTRL_VQ MQ \
               CTRL_MAC_ADDR VERSION_1 ACCESS_PLATFORM

Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20220105114646.577224-12-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Si-Wei Liu<si-wei.liu@oracle.com>
This commit is contained in:
Eli Cohen 2022-01-05 13:46:43 +02:00 committed by Michael S. Tsirkin
parent cd2629f6df
commit 79de65edf8
1 changed files with 23 additions and 12 deletions
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35
drivers/vdpa/mlx5/net/mlx5_vnet.c
View File

@ -1866,22 +1866,29 @@ static u64 mlx_to_vritio_features(u16 dev_features)
return result;
}
static u64 get_supported_features(struct mlx5_core_dev *mdev)
{
u64 mlx_vdpa_features = 0;
u16 dev_features;
dev_features = MLX5_CAP_DEV_VDPA_EMULATION(mdev, device_features_bits_mask);
mlx_vdpa_features |= mlx_to_vritio_features(dev_features);
if (MLX5_CAP_DEV_VDPA_EMULATION(mdev, virtio_version_1_0))
mlx_vdpa_features |= BIT_ULL(VIRTIO_F_VERSION_1);
mlx_vdpa_features |= BIT_ULL(VIRTIO_F_ACCESS_PLATFORM);
mlx_vdpa_features |= BIT_ULL(VIRTIO_NET_F_CTRL_VQ);
mlx_vdpa_features |= BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR);
mlx_vdpa_features |= BIT_ULL(VIRTIO_NET_F_MQ);
mlx_vdpa_features |= BIT_ULL(VIRTIO_NET_F_STATUS);
mlx_vdpa_features |= BIT_ULL(VIRTIO_NET_F_MTU);
return mlx_vdpa_features;
}
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);
u16 dev_features;
dev_features = MLX5_CAP_DEV_VDPA_EMULATION(mvdev->mdev, device_features_bits_mask);
ndev->mvdev.mlx_features |= mlx_to_vritio_features(dev_features);
if (MLX5_CAP_DEV_VDPA_EMULATION(mvdev->mdev, virtio_version_1_0))
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_F_VERSION_1);
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_F_ACCESS_PLATFORM);
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_NET_F_CTRL_VQ);
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_NET_F_CTRL_MAC_ADDR);
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_NET_F_MQ);
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_NET_F_STATUS);
ndev->mvdev.mlx_features |= BIT_ULL(VIRTIO_NET_F_MTU);
print_features(mvdev, ndev->mvdev.mlx_features, false);
return ndev->mvdev.mlx_features;
@ -2563,6 +2570,7 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name,
if (IS_ERR(ndev))
return PTR_ERR(ndev);
ndev->mvdev.mlx_features = mgtdev->mgtdev.supported_features;
ndev->mvdev.max_vqs = max_vqs;
mvdev = &ndev->mvdev;
mvdev->mdev = mdev;
@ -2696,6 +2704,9 @@ static int mlx5v_probe(struct auxiliary_device *adev,
mgtdev->mgtdev.id_table = id_table;
mgtdev->mgtdev.config_attr_mask = BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR) |
BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MAX_VQP);
mgtdev->mgtdev.max_supported_vqs =
MLX5_CAP_DEV_VDPA_EMULATION(mdev, max_num_virtio_queues) + 1;
mgtdev->mgtdev.supported_features = get_supported_features(mdev);
mgtdev->madev = madev;
err = vdpa_mgmtdev_register(&mgtdev->mgtdev);