ethtool: Report link-down while interface is down
authorBen Hutchings <bhutchings@solarflare.com>
Thu, 9 Dec 2010 12:08:35 +0000 (12:08 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 10 Dec 2010 23:55:23 +0000 (15:55 -0800)
commite596e6e4d578f2639416e620d367a3af34814a40
tree9ffe67f2abe3aebda15ce65ef4ff223f2db7d0f9
parent29639059a0122d95b34b5475bd9fee3910b401a3
ethtool: Report link-down while interface is down

While an interface is down, many implementations of
ethtool_ops::get_link, including the default, ethtool_op_get_link(),
will report the last link state seen while the interface was up.  In
general the current physical link state is not available if the
interface is down.

Define ETHTOOL_GLINK to reflect whether the interface *and* any
physical port have a working link, and consistently return 0 when the
interface is down.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/ethtool.h
net/core/ethtool.c