The MDI-X status is a useful tool for diagnosing network
connectivity issues. We expose MDI-X status as a tri-state value
status which drivers can optionally implement.

Signed-off-by: Chaitanya Lala <redacted>
Signed-off-by: Arthur Jones <redacted>
---
 ethtool-copy.h |    8 +++++++-
 ethtool.c      |   13 +++++++++++++
 2 files changed, 20 insertions(+), 1 deletions(-)

diff --git a/ethtool-copy.h b/ethtool-copy.h
index 3ca4e2c..48fb1d3 100644
--- a/ethtool-copy.h
+++ b/ethtool-copy.h

@@ -26,7 +26,8 @@ struct ethtool_cmd {
 	__u32	maxtxpkt;	/* Tx pkts before generating tx int */
 	__u32	maxrxpkt;	/* Rx pkts before generating rx int */
 	__u16	speed_hi;
-	__u16	reserved2;
+	__u8	is_mdix;
+	__u8	reserved2;
 	__u32	reserved[3];
 };
 

@@ -416,6 +417,11 @@ struct ethtool_rxnfc {
 #define AUTONEG_DISABLE		0x00
 #define AUTONEG_ENABLE		0x01
 
+/* Mode MDI or MDI-X */
+#define MDI_INVALID 0x00
+#define MDI         0x01
+#define MDI_X       0x02
+
 /* Wake-On-Lan options. */
 #define WAKE_PHY		(1 << 0)
 #define WAKE_UCAST		(1 << 1)