[ETHTOOL]: Add ETHTOOL_[GS]FLAGS sub-ioctls
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index c5e0593..6f8b78b 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -109,6 +109,32 @@
return 0;
}
+/* the following list of flags are the same as their associated
+ * NETIF_F_xxx values in include/linux/netdevice.h
+ */
+static const u32 flags_dup_features =
+ ETH_FLAG_LRO;
+
+u32 ethtool_op_get_flags(struct net_device *dev)
+{
+ /* in the future, this function will probably contain additional
+ * handling for flags which are not so easily handled
+ * by a simple masking operation
+ */
+
+ return dev->features & flags_dup_features;
+}
+
+int ethtool_op_set_flags(struct net_device *dev, u32 data)
+{
+ if (data & ETH_FLAG_LRO)
+ dev->features |= NETIF_F_LRO;
+ else
+ dev->features &= ~NETIF_F_LRO;
+
+ return 0;
+}
+
/* Handlers for each ethtool command */
static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
@@ -783,6 +809,33 @@
return 0;
}
+static int ethtool_get_flags(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata = { ETHTOOL_GFLAGS };
+
+ if (!dev->ethtool_ops->get_flags)
+ return -EOPNOTSUPP;
+
+ edata.data = dev->ethtool_ops->get_flags(dev);
+
+ if (copy_to_user(useraddr, &edata, sizeof(edata)))
+ return -EFAULT;
+ return 0;
+}
+
+static int ethtool_set_flags(struct net_device *dev, char __user *useraddr)
+{
+ struct ethtool_value edata;
+
+ if (!dev->ethtool_ops->set_flags)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&edata, useraddr, sizeof(edata)))
+ return -EFAULT;
+
+ return dev->ethtool_ops->set_flags(dev, edata.data);
+}
+
/* The main entry point in this file. Called from net/core/dev.c */
int dev_ethtool(struct ifreq *ifr)
@@ -935,6 +988,12 @@
case ETHTOOL_SGSO:
rc = ethtool_set_gso(dev, useraddr);
break;
+ case ETHTOOL_GFLAGS:
+ rc = ethtool_get_flags(dev, useraddr);
+ break;
+ case ETHTOOL_SFLAGS:
+ rc = ethtool_set_flags(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}
@@ -959,3 +1018,5 @@
EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
EXPORT_SYMBOL(ethtool_op_set_ufo);
EXPORT_SYMBOL(ethtool_op_get_ufo);
+EXPORT_SYMBOL(ethtool_op_set_flags);
+EXPORT_SYMBOL(ethtool_op_get_flags);