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Commit da74e89d authored by Amit Shah's avatar Amit Shah Committed by Rusty Russell
Browse files

virtio: Enable netpoll interface for netconsole logging 



Add a new poll_controller handler that the netpoll interface needs.

This enables netconsole logging from a kvm guest over the virtio
net interface.

Signed-off-by: default avatarAmit Shah <amitshah@gmx.net>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent bdc1681c

drivers/net/virtio_net.c

+12 −0
Original line number Diff line number Diff line
@@ -294,6 +294,15 @@ static int start_xmit(struct sk_buff *skb, struct net_device *dev) 
	return 0;

}



#ifdef CONFIG_NET_POLL_CONTROLLER

static void virtnet_netpoll(struct net_device *dev)

{

	struct virtnet_info *vi = netdev_priv(dev);



	napi_schedule(&vi->napi);

}

#endif



static int virtnet_open(struct net_device *dev)

{

	struct virtnet_info *vi = netdev_priv(dev);
@@ -336,6 +345,9 @@ static int virtnet_probe(struct virtio_device *vdev) 
	dev->stop = virtnet_close;

	dev->hard_start_xmit = start_xmit;

	dev->features = NETIF_F_HIGHDMA;

#ifdef CONFIG_NET_POLL_CONTROLLER

	dev->poll_controller = virtnet_netpoll;

#endif

	SET_NETDEV_DEV(dev, &vdev->dev);



	/* Do we support "hardware" checksums? */