[PATH v5 3/3] vdpa/mlx5: Add the support of set mac address

[Cindy Lu]

Add the function to support setting the MAC address.
For vdpa/mlx5, the function will use mlx5_mpfs_add_mac
to set the mac address

Tested in ConnectX-6 Dx device

Signed-off-by: Cindy Lu <l...@redhat.com>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c 
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index ecfc16151d61..7fce952d650f 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -3785,10 +3785,38 @@ static void mlx5_vdpa_dev_del(struct vdpa_mgmt_dev 
*v_mdev, struct vdpa_device *
        destroy_workqueue(wq);
        mgtdev->ndev = NULL;
 }
+static int mlx5_vdpa_set_attr(struct vdpa_mgmt_dev *v_mdev,
+                             struct vdpa_device *dev,
+                             const struct vdpa_dev_set_config *add_config)
+{
+       struct virtio_net_config *config;
+       struct mlx5_core_dev *pfmdev;
+       struct mlx5_vdpa_dev *mvdev;
+       struct mlx5_vdpa_net *ndev;
+       struct mlx5_core_dev *mdev;
+       int err = -EINVAL;
+
+       mvdev = to_mvdev(dev);
+       ndev = to_mlx5_vdpa_ndev(mvdev);
+       mdev = mvdev->mdev;
+       config = &ndev->config;
+
+       down_write(&ndev->reslock);
+       if (add_config->mask & (1 << VDPA_ATTR_DEV_NET_CFG_MACADDR)) {
+               pfmdev = pci_get_drvdata(pci_physfn(mdev->pdev));
+               err = mlx5_mpfs_add_mac(pfmdev, config->mac);
+               if (0 == err)
+                       memcpy(config->mac, add_config->net.mac, ETH_ALEN);
+       }
+
+       up_write(&ndev->reslock);
+       return err;
+}
 
 static const struct vdpa_mgmtdev_ops mdev_ops = {
        .dev_add = mlx5_vdpa_dev_add,
        .dev_del = mlx5_vdpa_dev_del,
+       .dev_set_attr = mlx5_vdpa_set_attr,
 };
 
 static struct virtio_device_id id_table[] = {
-- 
2.45.0