Commit c5835df9 authored Apr 24, 2008 by Mandeep Singh Baines Committed by David S. Miller Apr 24, 2008

ethtool: EEPROM dump no longer works for tg3 and natsemi



In the ethtool user-space application, tg3 and natsemi over-ride the
default implementation of dump_eeprom(). In both tg3_dump_eeprom() and
natsemi_dump_eeprom(), there is a magic number check which is not
present in the default implementation.

Commit b131dd5d ("[ETHTOOL]: Add support for large eeproms") snipped
the code which copied the ethtool_eeprom structure back to
user-space. tg3 and natsemi are over-writing the magic number field
and then checking it in user-space. With the ethtool_eeprom copy
removed, the check is failing.

The fix is simple. Add the ethtool_eeprom copy back.

Signed-off-by: Mandeep Singh Baines <msb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 2db3e47e

net/core/ethtool.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -323,6 +323,11 @@ static int ethtool_get_eeprom(struct net_device dev, void __user useraddr)
		bytes_remaining -= eeprom.len;
		}

		eeprom.len = userbuf - (useraddr + sizeof(eeprom));
		eeprom.offset -= eeprom.len;
		if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
		ret = -EFAULT;

		kfree(data);
		return ret;
		}