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authorHerbert Xu <herbert@gondor.apana.org.au>2008-12-15 23:44:31 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-15 23:44:31 -0800
commitb240a0e5644eb817c4a397098a40e1ad42a615bc (patch)
treeff2262ce70c4f7773c01e736186dbb4b40145841 /net/core/ethtool.c
parentbf296b125b21b8d558ceb6ec30bb4eba2730cd6b (diff)
ethtool: Add GGRO and SGRO ops
This patch adds the ethtool ops to enable and disable GRO. It also makes GRO depend on RX checksum offload much the same as how TSO depends on SG support. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c53
1 files changed, 51 insertions, 2 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 14ada537f895..947710a36ced 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -528,6 +528,22 @@ static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
return dev->ethtool_ops->set_tx_csum(dev, edata.data);
}
+static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!dev->ethtool_ops->set_rx_csum)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)))
+ return -EFAULT;
+
+ if (!edata.data && dev->ethtool_ops->set_sg)
+ dev->features &= ~NETIF_F_GRO;
+
+ return dev->ethtool_ops->set_rx_csum(dev, edata.data);
+}
+
static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
{
struct ethtool_value edata;
@@ -599,6 +615,34 @@ static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
return 0;
}
+static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata = { ETHTOOL_GGRO };
+
+ edata.data = dev->features & NETIF_F_GRO;
+ if (copy_to_user(useraddr, &edata, sizeof(edata)))
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)))
+ return -EFAULT;
+
+ if (edata.data) {
+ if (!dev->ethtool_ops->get_rx_csum ||
+ !dev->ethtool_ops->get_rx_csum(dev))
+ return -EINVAL;
+ dev->features |= NETIF_F_GRO;
+ } else
+ dev->features &= ~NETIF_F_GRO;
+
+ return 0;
+}
+
static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
{
struct ethtool_test test;
@@ -932,8 +976,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
dev->ethtool_ops->get_rx_csum);
break;
case ETHTOOL_SRXCSUM:
- rc = ethtool_set_value(dev, useraddr,
- dev->ethtool_ops->set_rx_csum);
+ rc = ethtool_set_rx_csum(dev, useraddr);
break;
case ETHTOOL_GTXCSUM:
rc = ethtool_get_value(dev, useraddr, ethcmd,
@@ -1014,6 +1057,12 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
case ETHTOOL_SRXFH:
rc = ethtool_set_rxhash(dev, useraddr);
break;
+ case ETHTOOL_GGRO:
+ rc = ethtool_get_gro(dev, useraddr);
+ break;
+ case ETHTOOL_SGRO:
+ rc = ethtool_set_gro(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}