[vhost next 1/2] vdpa/mlx5: Make use of a specific 16 bit endianness API

From: Eli Cohen
Date: Thu Sep 17 2020 - 08:19:54 EST


Introduce a dedicated function to be used for setting 16 bit fields per
virio endianness requirements and use it to set the mtu field.

Signed-off-by: Eli Cohen <elic@xxxxxxxxxx>
---
drivers/vdpa/mlx5/net/mlx5_vnet.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 70676a6d1691..e70ff7dee33d 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -1514,6 +1514,11 @@ static inline bool mlx5_vdpa_is_little_endian(struct mlx5_vdpa_dev *mvdev)
(mvdev->actual_features & (1ULL << VIRTIO_F_VERSION_1));
}

+static __virtio16 cpu_to_mlx5vdpa16(struct mlx5_vdpa_dev *mvdev, u16 val)
+{
+ return __cpu_to_virtio16(mlx5_vdpa_is_little_endian(mvdev), val);
+}
+
static int mlx5_vdpa_set_features(struct vdpa_device *vdev, u64 features)
{
struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
@@ -1527,8 +1532,7 @@ static int mlx5_vdpa_set_features(struct vdpa_device *vdev, u64 features)
return err;

ndev->mvdev.actual_features = features & ndev->mvdev.mlx_features;
- ndev->config.mtu = __cpu_to_virtio16(mlx5_vdpa_is_little_endian(mvdev),
- ndev->mtu);
+ ndev->config.mtu = cpu_to_mlx5vdpa16(mvdev, ndev->mtu);
return err;
}

--
2.27.0