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Commit da74e89d authored by Amit Shah's avatar Amit Shah Committed by Rusty Russell
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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
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+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? */