[ETHTOOL] Provide default behaviors for a few ethtool sub-ioctls

For the operations
	get-tx-csum
	get-sg
	get-tso
	get-ufo
the default ethtool_op_xxx behavior is fine for all drivers, so we
permit op==NULL to imply the default behavior.

This provides a more uniform behavior across all drivers, eliminating
ethtool(8) "ioctl not supported" errors on older drivers that had
not been updated for the latest sub-ioctls.

The ethtool_op_xxx() functions are left exported, in case anyone
wishes to call them directly from a driver-private implementation --
a not-uncommon case.  Should an ethtool_op_xxx() helper remain unused
for a while, except by net/core/ethtool.c, we can un-export it at a
later date.

[ Resolved conflicts with set/get value ethtool patch... -DaveM ]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 0 insertions, 4 deletions

diff --git a/drivers/net/tulip/de2104x.c b/drivers/net/tulip/de2104x.c
index bd04e93908ef..ba3d0e5574a4 100644
--- a/drivers/net/tulip/de2104x.c
+++ b/drivers/net/tulip/de2104x.c
@@ -1670,8 +1670,6 @@ static void de_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 
 static const struct ethtool_ops de_ethtool_ops = {
         .get_link               = ethtool_op_get_link,
-        .get_tx_csum            = ethtool_op_get_tx_csum,
-        .get_sg                 = ethtool_op_get_sg,
         .get_drvinfo            = de_get_drvinfo,
         .get_regs_len           = de_get_regs_len,
         .get_settings           = de_get_settings,
diff --git a/drivers/net/tulip/winbond-840.c b/drivers/net/tulip/winbond-840.c
index 396f8455cd32..e00833fadc0b 100644
--- a/drivers/net/tulip/winbond-840.c
+++ b/drivers/net/tulip/winbond-840.c
@@ -1451,8 +1451,6 @@ static const struct ethtool_ops netdev_ethtool_ops = {
         .get_link               = netdev_get_link,
         .get_msglevel           = netdev_get_msglevel,
         .set_msglevel           = netdev_set_msglevel,
-        .get_sg                 = ethtool_op_get_sg,
-        .get_tx_csum            = ethtool_op_get_tx_csum,
 };
 
 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)