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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: Amit Shah <amitshah@gmx.net> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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1 changed files with 12 additions and 0 deletions
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@ -294,6 +294,15 @@ static int start_xmit(struct sk_buff *skb, struct net_device *dev)
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return 0;
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}
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#ifdef CONFIG_NET_POLL_CONTROLLER
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static void virtnet_netpoll(struct net_device *dev)
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{
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struct virtnet_info *vi = netdev_priv(dev);
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napi_schedule(&vi->napi);
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}
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#endif
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static int virtnet_open(struct net_device *dev)
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{
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struct virtnet_info *vi = netdev_priv(dev);
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@ -336,6 +345,9 @@ static int virtnet_probe(struct virtio_device *vdev)
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dev->stop = virtnet_close;
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dev->hard_start_xmit = start_xmit;
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dev->features = NETIF_F_HIGHDMA;
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#ifdef CONFIG_NET_POLL_CONTROLLER
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dev->poll_controller = virtnet_netpoll;
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#endif
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SET_NETDEV_DEV(dev, &vdev->dev);
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/* Do we support "hardware" checksums? */
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