From a767bde4d484b60dab0abac740a7151b624a30bf Mon Sep 17 00:00:00 2001
From: Rusty Russell <rusty@rustcorp.com.au>
Date: Wed, 4 Aug 2010 17:32:05 +0000
Subject: [PATCH] virtio_net: implements ethtool_ops.get_drvinfo
I often use "ethtool -i" command to check what driver controls the
ehternet device. But because current virtio_net driver doesn't
support "ethtool -i", it becomes the following:
# ethtool -i eth3
Cannot get driver information: Operation not supported
This patch simply adds the "ethtool -i" support. The following is the
result when using the virtio_net driver with my patch applied to.
# ethtool -i eth3
driver: virtio_net
version: N/A
firmware-version: N/A
bus-info: virtio0
Personally, "-i" is one of the most frequently-used option, and most
network drivers support "ethtool -i", so I think virtio_net also
should do.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (use ARRAY_SIZE)
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/virtio_net.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index bb6b67f6b0cc..4598e9d2608f 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -705,6 +705,19 @@ static int virtnet_close(struct net_device *dev)
return 0;
}
+static void virtnet_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct virtio_device *vdev = vi->vdev;
+
+ strncpy(drvinfo->driver, KBUILD_MODNAME, ARRAY_SIZE(drvinfo->driver));
+ strncpy(drvinfo->version, "N/A", ARRAY_SIZE(drvinfo->version));
+ strncpy(drvinfo->fw_version, "N/A", ARRAY_SIZE(drvinfo->fw_version));
+ strncpy(drvinfo->bus_info, dev_name(&vdev->dev),
+ ARRAY_SIZE(drvinfo->bus_info));
+}
+
static int virtnet_set_tx_csum(struct net_device *dev, u32 data)
{
struct virtnet_info *vi = netdev_priv(dev);
@@ -817,6 +830,7 @@ static void virtnet_vlan_rx_kill_vid(struct net_device *dev, u16 vid)
}
static const struct ethtool_ops virtnet_ethtool_ops = {
+ .get_drvinfo = virtnet_get_drvinfo,
.set_tx_csum = virtnet_set_tx_csum,
.set_sg = ethtool_op_set_sg,
.set_tso = ethtool_op_set_tso,
--
GitLab