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authorJon Wetzel <jon_wetzel@dell.com>2005-08-20 17:15:54 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 16:02:44 -0700
commita6f9a70578b981321b63786ac8015f17cca4fcbd (patch)
tree5cbc50f95419f4d8d5b13186ccc42b293e0e684a /net/core/ethtool.c
parent8cd25c1fcfbf6460983e99091d278187421c1a1d (diff)
[NET]: Add support for getting the permanent hardware address.
This patch adds a new field to net device to hold the permanent hardware address, and adds a new generic ethtool_op function to get that address. Signed-off-by: Jon Wetzel <jon_wetzel@dell.com> Signed-off-by: John W. Linville <linville@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/ethtool.c')
-rw-r--r--net/core/ethtool.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index a3eeb88e1c81..289c1b5a8e4a 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -81,6 +81,18 @@ int ethtool_op_set_tso(struct net_device *dev, u32 data)
return 0;
}
+int ethtool_op_get_perm_addr(struct net_device *dev, struct ethtool_perm_addr *addr, u8 *data)
+{
+ unsigned char len = dev->addr_len;
+ if ( addr->size < len )
+ return -ETOOSMALL;
+
+ addr->size = len;
+ memcpy(data, dev->perm_addr, len);
+ return 0;
+}
+
+
/* Handlers for each ethtool command */
static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
@@ -683,6 +695,39 @@ static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
return ret;
}
+static int ethtool_get_perm_addr(struct net_device *dev, void *useraddr)
+{
+ struct ethtool_perm_addr epaddr;
+ u8 *data;
+ int ret;
+
+ if (!dev->ethtool_ops->get_perm_addr)
+ return -EOPNOTSUPP;
+
+ if (copy_from_user(&epaddr,useraddr,sizeof(epaddr)))
+ return -EFAULT;
+
+ data = kmalloc(epaddr.size, GFP_USER);
+ if (!data)
+ return -ENOMEM;
+
+ ret = dev->ethtool_ops->get_perm_addr(dev,&epaddr,data);
+ if (ret)
+ return ret;
+
+ ret = -EFAULT;
+ if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
+ goto out;
+ useraddr += sizeof(epaddr);
+ if (copy_to_user(useraddr, data, epaddr.size))
+ goto out;
+ ret = 0;
+
+ out:
+ kfree(data);
+ return ret;
+}
+
/* The main entry point in this file. Called from net/core/dev.c */
int dev_ethtool(struct ifreq *ifr)
@@ -806,6 +851,9 @@ int dev_ethtool(struct ifreq *ifr)
case ETHTOOL_GSTATS:
rc = ethtool_get_stats(dev, useraddr);
break;
+ case ETHTOOL_GPERMADDR:
+ rc = ethtool_get_perm_addr(dev, useraddr);
+ break;
default:
rc = -EOPNOTSUPP;
}
@@ -826,6 +874,7 @@ int dev_ethtool(struct ifreq *ifr)
EXPORT_SYMBOL(dev_ethtool);
EXPORT_SYMBOL(ethtool_op_get_link);
+EXPORT_SYMBOL_GPL(ethtool_op_get_perm_addr);
EXPORT_SYMBOL(ethtool_op_get_sg);
EXPORT_SYMBOL(ethtool_op_get_tso);
EXPORT_SYMBOL(ethtool_op_get_tx_csum);