AcoSail/kernel_optimize_test
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vlan: convert VLAN devices to use ndo_fix_features()

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Note: get_flags was actually broken, because it should return the
flags capped with vlan_features. This is now done implicitly by
limiting netdev->hw_features.

RX checksumming offload control is (and was) broken, as there was no way
before to say whether it's done for tagged packets.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michał Mirosław 2011-04-02 22:49:12 -07:00 committed by David S. Miller
parent 6cb6a27c45
commit 8a0427bb68
2 changed files with 16 additions and 42 deletions
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8
net/8021q/vlan.c
View File

@ -327,10 +327,6 @@ static void vlan_sync_address(struct net_device *dev,
static void vlan_transfer_features(struct net_device *dev,
struct net_device *vlandev)
{
u32 old_features = vlandev->features;
vlandev->features &= ~dev->vlan_features;
vlandev->features |= dev->features & dev->vlan_features;
vlandev->gso_max_size = dev->gso_max_size;
if (dev->features & NETIF_F_HW_VLAN_TX)
@ -341,8 +337,8 @@ static void vlan_transfer_features(struct net_device *dev,
#if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
vlandev->fcoe_ddp_xid = dev->fcoe_ddp_xid;
#endif
if (old_features != vlandev->features)
netdev_features_change(vlandev);
netdev_update_features(vlandev);
}
static void __vlan_device_event(struct net_device *dev, unsigned long event)

50
net/8021q/vlan_dev.c
View File

@ -704,8 +704,8 @@ static int vlan_dev_init(struct net_device *dev)
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
dev->features |= real_dev->features & real_dev->vlan_features;
dev->features |= NETIF_F_LLTX;
dev->hw_features = real_dev->vlan_features & NETIF_F_ALL_TX_OFFLOADS;
dev->features |= real_dev->vlan_features | NETIF_F_LLTX;
dev->gso_max_size = real_dev->gso_max_size;
/* ipv6 shared card related stuff */
@ -759,6 +759,17 @@ static void vlan_dev_uninit(struct net_device *dev)
}
}
static u32 vlan_dev_fix_features(struct net_device *dev, u32 features)
{
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
features &= (real_dev->features | NETIF_F_LLTX);
if (dev_ethtool_get_rx_csum(real_dev))
features |= NETIF_F_RXCSUM;
return features;
}
static int vlan_ethtool_get_settings(struct net_device *dev,
struct ethtool_cmd *cmd)
{
@ -774,18 +785,6 @@ static void vlan_ethtool_get_drvinfo(struct net_device *dev,
strcpy(info->fw_version, "N/A");
}
static u32 vlan_ethtool_get_rx_csum(struct net_device *dev)
{
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
return dev_ethtool_get_rx_csum(vlan->real_dev);
}
static u32 vlan_ethtool_get_flags(struct net_device *dev)
{
const struct vlan_dev_info *vlan = vlan_dev_info(dev);
return dev_ethtool_get_flags(vlan->real_dev);
}
static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
@ -823,32 +822,10 @@ static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, st
return stats;
}
static int vlan_ethtool_set_tso(struct net_device *dev, u32 data)
{
if (data) {
struct net_device *real_dev = vlan_dev_info(dev)->real_dev;
/* Underlying device must support TSO for VLAN-tagged packets
* and must have TSO enabled now.
*/
if (!(real_dev->vlan_features & NETIF_F_TSO))
return -EOPNOTSUPP;
if (!(real_dev->features & NETIF_F_TSO))
return -EINVAL;
dev->features |= NETIF_F_TSO;
} else {
dev->features &= ~NETIF_F_TSO;
}
return 0;
}
static const struct ethtool_ops vlan_ethtool_ops = {
.get_settings = vlan_ethtool_get_settings,
.get_drvinfo = vlan_ethtool_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_rx_csum = vlan_ethtool_get_rx_csum,
.get_flags = vlan_ethtool_get_flags,
.set_tso = vlan_ethtool_set_tso,
};
static const struct net_device_ops vlan_netdev_ops = {
@ -874,6 +851,7 @@ static const struct net_device_ops vlan_netdev_ops = {
.ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn,
.ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target,
#endif
.ndo_fix_features = vlan_dev_fix_features,
};
void vlan_setup(struct net_device *dev)