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authorOr Gerlitz <ogerlitz@voltaire.com>2010-03-04 13:16:52 (GMT)
committerRoland Dreier <rolandd@cisco.com>2010-04-22 00:17:30 (GMT)
commitd414371795d54fa916938f948105d08928abfbb9 (patch)
treea7f34094105b580336a40ecdf3b99599ed4593ea /drivers/infiniband
parent0eddb519b9127c73d53db4bf3ec1d45b13f844d1 (diff)
downloadlinux-d414371795d54fa916938f948105d08928abfbb9.tar.xz
IPoIB: Allow disabling/enabling TSO on the fly through ethtool
Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_ethtool.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
index d10b4ec..40e8584 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
@@ -49,6 +49,25 @@ static u32 ipoib_get_rx_csum(struct net_device *dev)
!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
}
+static int ipoib_set_tso(struct net_device *dev, u32 data)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
+
+ if (data) {
+ if (!test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags) &&
+ (dev->features & NETIF_F_SG) &&
+ (priv->hca_caps & IB_DEVICE_UD_TSO)) {
+ dev->features |= NETIF_F_TSO;
+ } else {
+ ipoib_warn(priv, "can't set TSO on\n");
+ return -EOPNOTSUPP;
+ }
+ } else
+ dev->features &= ~NETIF_F_TSO;
+
+ return 0;
+}
+
static int ipoib_get_coalesce(struct net_device *dev,
struct ethtool_coalesce *coal)
{
@@ -131,6 +150,7 @@ static void ipoib_get_ethtool_stats(struct net_device *dev,
static const struct ethtool_ops ipoib_ethtool_ops = {
.get_drvinfo = ipoib_get_drvinfo,
.get_rx_csum = ipoib_get_rx_csum,
+ .set_tso = ipoib_set_tso,
.get_coalesce = ipoib_get_coalesce,
.set_coalesce = ipoib_set_coalesce,
.get_flags = ethtool_op_get_flags,