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@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index 5522d45..4855f1f 100644 (file)
--- 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);
-
-       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;
-       }
-}
+       /*
+        * 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.
+        */
 
-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))
-               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)))
+       if (rx_csum == adapter->rx_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) {