Subject: Re: [PATCH] Make virtio_net support carrier detection

From: Rusty Russell <[email-masked]>
Date: Thu, 12 Mar 2009 17:59:30 +1030

On Wednesday 11 March 2009 22:27:22 Pantelis Koukousoulas wrote:
> For now the semantics are simple: There is always carrier.
> 
> This allows a seamless experience with e.g., qemu/kvm
> where NetworkManager just configures and sets up
> everything automagically.

So, NetworkManager ignores the device because it doesn't support
carrier detection?

That seems weird, but I have nothing against this patch in general.

Thanks,
Rusty.

> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -612,6 +612,7 @@ static struct ethtool_ops virtnet_ethtool_ops = {
>  	.set_tx_csum = virtnet_set_tx_csum,
>  	.set_sg = ethtool_op_set_sg,
>  	.set_tso = ethtool_op_set_tso,
> +	.get_link = ethtool_op_get_link,
>  };
>  
>  #define MIN_MTU 68
> @@ -739,6 +740,8 @@ static int virtnet_probe(struct virtio_device *vdev)
>  		goto unregister;
>  	}
>  
> +	netif_carrier_on(dev);
> +
>  	pr_debug("virtnet: registered device %s\n", dev->name);
>  	return 0;