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@xxxxxxx>
---
drivers/net/virtio_net.c | 12 ++++++++++++
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index fdc2367..3f3d334 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -294,6 +294,15 @@ again:
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? */
--
1.5.2.5
--
Amit Shah
http://www.amitshah.net/
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