Re: [PATCH] net/mlx5_vdpa: Offer VIRTIO_NET_F_MTU when setting MTU

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On 11/24/2021 9:09 AM, Eli Cohen wrote:
Make sure to offer VIRTIO_NET_F_MTU since we configure the MTU based on
what was queried from the device.

This allows the virtio driver to allocate large enough buffers based on
the reported MTU.

Signed-off-by: Eli Cohen <elic@xxxxxxxxxx>
Reviewed-by: Si-Wei Liu <si-wei.liu@xxxxxxxxxx>
---
  drivers/vdpa/mlx5/net/mlx5_vnet.c | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 465e832f2ad1..ed7a63e48335 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -1956,6 +1956,7 @@ static u64 mlx5_vdpa_get_features(struct vdpa_device *vdev)
  	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;

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