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Message-Id: <20110331110135.6988113A64@rere.qmqm.pl>
Date: Thu, 31 Mar 2011 13:01:35 +0200 (CEST)
From: Michał Mirosław <mirq-linux@...e.qmqm.pl>
To: netdev@...r.kernel.org
Cc: Rusty Russell <rusty@...tcorp.com.au>,
"Michael S. Tsirkin" <mst@...hat.com>,
virtualization@...ts.linux-foundation.org
Subject: [PATCH] virtio_net: convert to hw_features
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
drivers/net/virtio_net.c | 46 +++++++++++++++++++---------------------------
1 files changed, 19 insertions(+), 27 deletions(-)
This is an example conversion to hw_features when constraints are
constant and can be detected at init time.
Build tested only.
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 82dba5a..0cb0b06 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -710,17 +710,6 @@ static int virtnet_close(struct net_device *dev)
return 0;
}
-static int virtnet_set_tx_csum(struct net_device *dev, u32 data)
-{
- struct virtnet_info *vi = netdev_priv(dev);
- struct virtio_device *vdev = vi->vdev;
-
- if (data && !virtio_has_feature(vdev, VIRTIO_NET_F_CSUM))
- return -ENOSYS;
-
- return ethtool_op_set_tx_hw_csum(dev, data);
-}
-
static void virtnet_set_rx_mode(struct net_device *dev)
{
struct virtnet_info *vi = netdev_priv(dev);
@@ -822,10 +811,6 @@ static void virtnet_vlan_rx_kill_vid(struct net_device *dev, u16 vid)
}
static const struct ethtool_ops virtnet_ethtool_ops = {
- .set_tx_csum = virtnet_set_tx_csum,
- .set_sg = ethtool_op_set_sg,
- .set_tso = ethtool_op_set_tso,
- .set_ufo = ethtool_op_set_ufo,
.get_link = ethtool_op_get_link,
};
@@ -912,22 +897,29 @@ static int virtnet_probe(struct virtio_device *vdev)
SET_NETDEV_DEV(dev, &vdev->dev);
/* Do we support "hardware" checksums? */
- if (csum && virtio_has_feature(vdev, VIRTIO_NET_F_CSUM)) {
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_CSUM)) {
/* This opens up the world of extra features. */
- dev->features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
- if (gso && virtio_has_feature(vdev, VIRTIO_NET_F_GSO)) {
- dev->features |= NETIF_F_TSO | NETIF_F_UFO
+ dev->hw_features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
+ if (csum)
+ dev->features |= NETIF_F_HW_CSUM|NETIF_F_SG|NETIF_F_FRAGLIST;
+
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_GSO)) {
+ dev->hw_features |= NETIF_F_TSO | NETIF_F_UFO
| NETIF_F_TSO_ECN | NETIF_F_TSO6;
}
/* Individual feature bits: what can host handle? */
- if (gso && virtio_has_feature(vdev, VIRTIO_NET_F_HOST_TSO4))
- dev->features |= NETIF_F_TSO;
- if (gso && virtio_has_feature(vdev, VIRTIO_NET_F_HOST_TSO6))
- dev->features |= NETIF_F_TSO6;
- if (gso && virtio_has_feature(vdev, VIRTIO_NET_F_HOST_ECN))
- dev->features |= NETIF_F_TSO_ECN;
- if (gso && virtio_has_feature(vdev, VIRTIO_NET_F_HOST_UFO))
- dev->features |= NETIF_F_UFO;
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_HOST_TSO4))
+ dev->hw_features |= NETIF_F_TSO;
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_HOST_TSO6))
+ dev->hw_features |= NETIF_F_TSO6;
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_HOST_ECN))
+ dev->hw_features |= NETIF_F_TSO_ECN;
+ if (virtio_has_feature(vdev, VIRTIO_NET_F_HOST_UFO))
+ dev->hw_features |= NETIF_F_UFO;
+
+ if (gso)
+ dev->features |= dev->hw_features & (NETIF_F_ALL_TSO|NETIF_F_UFO);
+ /* (!csum && gso) case will be fixed by register_netdev() */
}
/* Configuration may specify what MAC to use. Otherwise random. */
--
1.7.2.5
--
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