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From: Rusty Russell <rusty@rustcorp.com.au>
To: virtualization@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org, "Amit Shah" <amitshah@gmx.net>
Subject: [PATCH 4/4] virtio: Enable netpoll interface for netconsole logging
Date: Tue, 11 Mar 2008 23:06:30 +1100	[thread overview]
Message-ID: <200803112306.30687.rusty@rustcorp.com.au> (raw)
In-Reply-To: <200803112305.23648.rusty@rustcorp.com.au>

From: "Amit Shah" <amitshah@gmx.net>

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>
---
 drivers/net/virtio_net.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
--- 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_d
 	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? */

      reply	other threads:[~2008-03-11 12:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-11 12:03 [PATCH 1/4] virtio: Use spin_lock_irqsave/restore for virtio-pci Rusty Russell
2008-03-11 12:04 ` [PATCH 2/4] virtio: Fix sysfs bits to have proper block symlink Rusty Russell
2008-03-11 12:05   ` [PATCH 3/4] virtio: handle > 2 billion page balloon targets Rusty Russell
2008-03-11 12:06     ` Rusty Russell [this message]

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