e1000: convert to ndo_fix_features

Private rx_csum flags are now duplicate of netdev->features & NETIF_F_RXCSUM.
Removing this needs deeper surgery.

Things noticed:
 - RX csum disabled by default
 - HW VLAN acceleration probably can be toggled, but it's left as is
 - the resets on RX csum offload change can probably be avoided
 - there is A LOT of copy-and-pasted code here

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Tested-by:  Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/e1000/e1000_ethtool.c b/drivers/net/e1000/e1000_ethtool.c
index ec0fa42..c5f0f04 100644 (file)
--- a/drivers/net/e1000/e1000_ethtool.c
+++ b/drivers/net/e1000/e1000_ethtool.c
@@ -290,69 +290,6 @@ static int e1000_set_pauseparam(struct net_device *netdev,
        return retval;
 }
 
-static u32 e1000_get_rx_csum(struct net_device *netdev)
-{
-       struct e1000_adapter *adapter = netdev_priv(netdev);
-       return adapter->rx_csum;
-}
-
-static int e1000_set_rx_csum(struct net_device *netdev, u32 data)
-{
-       struct e1000_adapter *adapter = netdev_priv(netdev);
-       adapter->rx_csum = data;
-
-       if (netif_running(netdev))
-               e1000_reinit_locked(adapter);
-       else
-               e1000_reset(adapter);
-       return 0;
-}
-
-static u32 e1000_get_tx_csum(struct net_device *netdev)
-{
-       return (netdev->features & NETIF_F_HW_CSUM) != 0;
-}
-
-static int e1000_set_tx_csum(struct net_device *netdev, u32 data)
-{
-       struct e1000_adapter *adapter = netdev_priv(netdev);
-       struct e1000_hw *hw = &adapter->hw;
-
-       if (hw->mac_type < e1000_82543) {
-               if (!data)
-                       return -EINVAL;
-               return 0;
-       }
-
-       if (data)
-               netdev->features |= NETIF_F_HW_CSUM;
-       else
-               netdev->features &= ~NETIF_F_HW_CSUM;
-
-       return 0;
-}
-
-static int e1000_set_tso(struct net_device *netdev, u32 data)
-{
-       struct e1000_adapter *adapter = netdev_priv(netdev);
-       struct e1000_hw *hw = &adapter->hw;
-
-       if ((hw->mac_type < e1000_82544) ||
-           (hw->mac_type == e1000_82547))
-               return data ? -EINVAL : 0;
-
-       if (data)
-               netdev->features |= NETIF_F_TSO;
-       else
-               netdev->features &= ~NETIF_F_TSO;
-
-       netdev->features &= ~NETIF_F_TSO6;
-
-       e_info(probe, "TSO is %s\n", data ? "Enabled" : "Disabled");
-       adapter->tso_force = true;
-       return 0;
-}
-
 static u32 e1000_get_msglevel(struct net_device *netdev)
 {
        struct e1000_adapter *adapter = netdev_priv(netdev);
@@ -1905,12 +1842,6 @@ static const struct ethtool_ops e1000_ethtool_ops = {
        .set_ringparam          = e1000_set_ringparam,
        .get_pauseparam         = e1000_get_pauseparam,
        .set_pauseparam         = e1000_set_pauseparam,
-       .get_rx_csum            = e1000_get_rx_csum,
-       .set_rx_csum            = e1000_set_rx_csum,
-       .get_tx_csum            = e1000_get_tx_csum,
-       .set_tx_csum            = e1000_set_tx_csum,
-       .set_sg                 = ethtool_op_set_sg,
-       .set_tso                = e1000_set_tso,
        .self_test              = e1000_diag_test,
        .get_strings            = e1000_get_strings,
        .set_phys_id            = e1000_set_phys_id,

diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 76e8af0..188d99a 100644 (file)
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -797,6 +797,24 @@ static int e1000_is_need_ioport(struct pci_dev *pdev)
        }
 }
 
+static int e1000_set_features(struct net_device *netdev, u32 features)
+{
+       struct e1000_adapter *adapter = netdev_priv(netdev);
+       u32 changed = features ^ netdev->features;
+
+       if (!(changed & NETIF_F_RXCSUM))
+               return 0;
+
+       adapter->rx_csum = !!(features & NETIF_F_RXCSUM);
+
+       if (netif_running(netdev))
+               e1000_reinit_locked(adapter);
+       else
+               e1000_reset(adapter);
+
+       return 0;
+}
+
 static const struct net_device_ops e1000_netdev_ops = {
        .ndo_open               = e1000_open,
        .ndo_stop               = e1000_close,
@@ -815,6 +833,7 @@ static const struct net_device_ops e1000_netdev_ops = {
 #ifdef CONFIG_NET_POLL_CONTROLLER
        .ndo_poll_controller    = e1000_netpoll,
 #endif
+       .ndo_set_features       = e1000_set_features,
 };
 
 /**
@@ -1016,16 +1035,19 @@ static int __devinit e1000_probe(struct pci_dev *pdev,
        }
 
        if (hw->mac_type >= e1000_82543) {
-               netdev->features = NETIF_F_SG |
-                                  NETIF_F_HW_CSUM |
-                                  NETIF_F_HW_VLAN_TX |
+               netdev->hw_features = NETIF_F_SG |
+                                  NETIF_F_HW_CSUM;
+               netdev->features = NETIF_F_HW_VLAN_TX |
                                   NETIF_F_HW_VLAN_RX |
                                   NETIF_F_HW_VLAN_FILTER;
        }
 
        if ((hw->mac_type >= e1000_82544) &&
           (hw->mac_type != e1000_82547))
-               netdev->features |= NETIF_F_TSO;
+               netdev->hw_features |= NETIF_F_TSO;
+
+       netdev->features |= netdev->hw_features;
+       netdev->hw_features |= NETIF_F_RXCSUM;
 
        if (pci_using_dac) {
                netdev->features |= NETIF_F_HIGHDMA;