[PATCH net] vdpa/mlx5: Fix miss to set VIRTIO_NET_S_LINK_UP for virtio_net_config

[wenxu]

From: wenxu <we...@ucloud.cn>

Qemu get virtio_net_config from the vdpa driver. So The vdpa driver
should set the VIRTIO_NET_S_LINK_UP flag to virtio_net_config like
vdpa_sim. Or the link of virtio net NIC in the virtual machine will
never up.

Fixes:1a86b377aa21 ("vdpa/mlx5: Add VDPA driver for supported mlx5 devices")
Signed-off-by: wenxu <we...@ucloud.cn>
---
 drivers/vdpa/mlx5/net/mlx5_vnet.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c 
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
index 74264e59..af6c74c 100644
--- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
+++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
@@ -1537,6 +1537,8 @@ static int mlx5_vdpa_set_features(struct vdpa_device 
*vdev, u64 features)
        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.status = 
__cpu_to_virtio16(mlx5_vdpa_is_little_endian(mvdev),
+                                              VIRTIO_NET_S_LINK_UP);
        return err;
 }
 
-- 
1.8.3.1