net: Fix too optimistic NETIF_F_HW_CSUM features

NETIF_F_HW_CSUM is a superset of NETIF_F_IP_CSUM+NETIF_F_IPV6_CSUM, but
some drivers miss the difference. Fix this and also fix UFO dependency
on checksumming offload as it makes the same mistake in assumptions.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 4 insertions, 21 deletions

diff --git a/drivers/net/pch_gbe/pch_gbe_ethtool.c b/drivers/net/pch_gbe/pch_gbe_ethtool.c
index c8cc32c0edc..c8c873b31a8 100644
--- a/drivers/net/pch_gbe/pch_gbe_ethtool.c
+++ b/drivers/net/pch_gbe/pch_gbe_ethtool.c
@@ -469,18 +469,6 @@ static int pch_gbe_set_rx_csum(struct net_device *netdev, u32 data)
 }
 
 /**
- * pch_gbe_get_tx_csum - Report whether transmit checksums are turned on or off
- * @netdev:  Network interface device structure
- * Returns
- *      true(1):  Checksum On
- *      false(0): Checksum Off
- */
-static u32 pch_gbe_get_tx_csum(struct net_device *netdev)
-{
-        return (netdev->features & NETIF_F_HW_CSUM) != 0;
-}
-
-/**
  * pch_gbe_set_tx_csum - Turn transmit checksums on or off
  * @netdev: Network interface device structure
  * @data:   Checksum on[true] or off[false]
@@ -493,11 +481,7 @@ static int pch_gbe_set_tx_csum(struct net_device *netdev, u32 data)
         struct pch_gbe_adapter *adapter = netdev_priv(netdev);
 
         adapter->tx_csum = data;
-        if (data)
-                netdev->features |= NETIF_F_HW_CSUM;
-        else
-                netdev->features &= ~NETIF_F_HW_CSUM;
-        return 0;
+        return ethtool_op_set_tx_ipv6_csum(netdev, data);
 }
 
 /**
@@ -572,7 +556,6 @@ static const struct ethtool_ops pch_gbe_ethtool_ops = {
         .set_pauseparam = pch_gbe_set_pauseparam,
         .get_rx_csum = pch_gbe_get_rx_csum,
         .set_rx_csum = pch_gbe_set_rx_csum,
-        .get_tx_csum = pch_gbe_get_tx_csum,
         .set_tx_csum = pch_gbe_set_tx_csum,
         .get_strings = pch_gbe_get_strings,
         .get_ethtool_stats = pch_gbe_get_ethtool_stats,
diff --git a/drivers/net/pch_gbe/pch_gbe_main.c b/drivers/net/pch_gbe/pch_gbe_main.c
index afb75066b14..58e79033a8e 100644
--- a/drivers/net/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/pch_gbe/pch_gbe_main.c
@@ -2319,7 +2319,7 @@ static int pch_gbe_probe(struct pci_dev *pdev,
         netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD;
         netif_napi_add(netdev, &adapter->napi,
                        pch_gbe_napi_poll, PCH_GBE_RX_WEIGHT);
-        netdev->features = NETIF_F_HW_CSUM | NETIF_F_GRO;
+        netdev->features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | NETIF_F_GRO;
         pch_gbe_set_ethtool_ops(netdev);
 
         pch_gbe_mac_reset_hw(&adapter->hw);
@@ -2358,9 +2358,9 @@ static int pch_gbe_probe(struct pci_dev *pdev,
         pch_gbe_check_options(adapter);
 
         if (adapter->tx_csum)
-                netdev->features |= NETIF_F_HW_CSUM;
+                netdev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
         else
-                netdev->features &= ~NETIF_F_HW_CSUM;
+                netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
 
         /* initialize the wol settings based on the eeprom settings */
         adapter->wake_up_evt = PCH_GBE_WL_INIT_SETTING;