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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>
hifive-unleashed-5.1
Amit Shah 2008-02-29 16:24:50 +05:30 committed by Rusty Russell
parent bdc1681cdf
commit da74e89d40
1 changed files with 12 additions and 0 deletions
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12
drivers/net/virtio_net.c
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@ -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? */