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Date: Tue, 19 Apr 2011 14:14:25 +0200 (CEST)
From: Michał Mirosław <mirq-linux@...e.qmqm.pl>
To: netdev@...r.kernel.org
Cc: Santiago Leon <santil@...ux.vnet.ibm.com>
Subject: [PATCH] net: ibmveth: convert to hw_features
A minimal conversion.
ibmveth_set_csum_offload() can be folded into ibmveth_set_features()
and adapter->rx_csum removed - left for later cleanup.
Signed-off-by: Michał Mirosław <mirq-linux@...e.qmqm.pl>
---
drivers/net/ibmveth.c | 96 ++++++++++++++-----------------------------------
1 files changed, 27 insertions(+), 69 deletions(-)
diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index 5522d45..4855f1f 100644
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -729,45 +729,24 @@ static void netdev_get_drvinfo(struct net_device *dev,
sizeof(info->version) - 1);
}
-static void ibmveth_set_rx_csum_flags(struct net_device *dev, u32 data)
+static u32 ibmveth_fix_features(struct net_device *dev, u32 features)
{
- struct ibmveth_adapter *adapter = netdev_priv(dev);
+ /*
+ * Since the ibmveth firmware interface does not have the
+ * concept of separate tx/rx checksum offload enable, if rx
+ * checksum is disabled we also have to disable tx checksum
+ * offload. Once we disable rx checksum offload, we are no
+ * longer allowed to send tx buffers that are not properly
+ * checksummed.
+ */
- if (data) {
- adapter->rx_csum = 1;
- } else {
- /*
- * Since the ibmveth firmware interface does not have the
- * concept of separate tx/rx checksum offload enable, if rx
- * checksum is disabled we also have to disable tx checksum
- * offload. Once we disable rx checksum offload, we are no
- * longer allowed to send tx buffers that are not properly
- * checksummed.
- */
- adapter->rx_csum = 0;
- dev->features &= ~NETIF_F_IP_CSUM;
- dev->features &= ~NETIF_F_IPV6_CSUM;
- }
-}
-
-static void ibmveth_set_tx_csum_flags(struct net_device *dev, u32 data)
-{
- struct ibmveth_adapter *adapter = netdev_priv(dev);
+ if (!(features & NETIF_F_RXCSUM))
+ features &= ~NETIF_F_ALL_CSUM;
- if (data) {
- if (adapter->fw_ipv4_csum_support)
- dev->features |= NETIF_F_IP_CSUM;
- if (adapter->fw_ipv6_csum_support)
- dev->features |= NETIF_F_IPV6_CSUM;
- adapter->rx_csum = 1;
- } else {
- dev->features &= ~NETIF_F_IP_CSUM;
- dev->features &= ~NETIF_F_IPV6_CSUM;
- }
+ return features;
}
-static int ibmveth_set_csum_offload(struct net_device *dev, u32 data,
- void (*done) (struct net_device *, u32))
+static int ibmveth_set_csum_offload(struct net_device *dev, u32 data)
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
unsigned long set_attr, clr_attr, ret_attr;
@@ -827,8 +806,8 @@ static int ibmveth_set_csum_offload(struct net_device *dev, u32 data,
} else
adapter->fw_ipv6_csum_support = data;
- if (ret == H_SUCCESS || ret6 == H_SUCCESS)
- done(dev, data);
+ if (ret != H_SUCCESS || ret6 != H_SUCCESS)
+ adapter->rx_csum = data;
else
rc1 = -EIO;
} else {
@@ -844,41 +823,22 @@ static int ibmveth_set_csum_offload(struct net_device *dev, u32 data,
return rc1 ? rc1 : rc2;
}
-static int ibmveth_set_rx_csum(struct net_device *dev, u32 data)
+static int ibmveth_set_features(struct net_device *dev, u32 features)
{
struct ibmveth_adapter *adapter = netdev_priv(dev);
+ int rx_csum = !!(features & NETIF_F_RXCSUM);
+ int rc;
- if ((data && adapter->rx_csum) || (!data && !adapter->rx_csum))
+ if (rx_csum == adapter->rx_csum)
return 0;
- return ibmveth_set_csum_offload(dev, data, ibmveth_set_rx_csum_flags);
-}
-
-static int ibmveth_set_tx_csum(struct net_device *dev, u32 data)
-{
- struct ibmveth_adapter *adapter = netdev_priv(dev);
- int rc = 0;
-
- if (data && (dev->features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
- return 0;
- if (!data && !(dev->features & (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM)))
- return 0;
-
- if (data && !adapter->rx_csum)
- rc = ibmveth_set_csum_offload(dev, data,
- ibmveth_set_tx_csum_flags);
- else
- ibmveth_set_tx_csum_flags(dev, data);
+ rc = ibmveth_set_csum_offload(dev, rx_csum);
+ if (rc && !adapter->rx_csum)
+ dev->features = features & ~(NETIF_F_ALL_CSUM | NETIF_F_RXCSUM);
return rc;
}
-static u32 ibmveth_get_rx_csum(struct net_device *dev)
-{
- struct ibmveth_adapter *adapter = netdev_priv(dev);
- return adapter->rx_csum;
-}
-
static void ibmveth_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
int i;
@@ -914,13 +874,9 @@ static const struct ethtool_ops netdev_ethtool_ops = {
.get_drvinfo = netdev_get_drvinfo,
.get_settings = netdev_get_settings,
.get_link = ethtool_op_get_link,
- .set_tx_csum = ibmveth_set_tx_csum,
- .get_rx_csum = ibmveth_get_rx_csum,
- .set_rx_csum = ibmveth_set_rx_csum,
.get_strings = ibmveth_get_strings,
.get_sset_count = ibmveth_get_sset_count,
.get_ethtool_stats = ibmveth_get_ethtool_stats,
- .set_sg = ethtool_op_set_sg,
};
static int ibmveth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
@@ -1345,6 +1301,8 @@ static const struct net_device_ops ibmveth_netdev_ops = {
.ndo_set_multicast_list = ibmveth_set_multicast_list,
.ndo_do_ioctl = ibmveth_ioctl,
.ndo_change_mtu = ibmveth_change_mtu,
+ .ndo_fix_features = ibmveth_fix_features,
+ .ndo_set_features = ibmveth_set_features,
.ndo_validate_addr = eth_validate_addr,
.ndo_set_mac_address = eth_mac_addr,
#ifdef CONFIG_NET_POLL_CONTROLLER
@@ -1412,7 +1370,9 @@ static int __devinit ibmveth_probe(struct vio_dev *dev,
netdev->netdev_ops = &ibmveth_netdev_ops;
netdev->ethtool_ops = &netdev_ethtool_ops;
SET_NETDEV_DEV(netdev, &dev->dev);
- netdev->features |= NETIF_F_SG;
+ netdev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM |
+ NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
+ netdev->features |= netdev->hw_features;
memcpy(netdev->dev_addr, &adapter->mac_addr, netdev->addr_len);
@@ -1437,8 +1397,6 @@ static int __devinit ibmveth_probe(struct vio_dev *dev,
netdev_dbg(netdev, "registering netdev...\n");
- ibmveth_set_csum_offload(netdev, 1, ibmveth_set_tx_csum_flags);
-
rc = register_netdev(netdev);
if (rc) {
--
1.7.2.5
--
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