1 files changed, 11 insertions, 6 deletions

diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 21eff418091b..fcb4f8e60c1c 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -45,8 +45,10 @@ struct ethtool_cmd {
                                  * bits) in Mbps. Please use
                                  * ethtool_cmd_speed()/_set() to
                                  * access it */
-        __u8    eth_tp_mdix;
-        __u8    reserved2;
+        __u8    eth_tp_mdix;    /* twisted pair MDI-X status */
+        __u8    eth_tp_mdix_ctrl; /* twisted pair MDI-X control, when set,
+                                   * link should be renegotiated if necessary
+                                   */
         __u32   lp_advertising; /* Features the link partner advertises */
         __u32   reserved[2];
 };
@@ -1229,10 +1231,13 @@ struct ethtool_ops {
 #define AUTONEG_DISABLE         0x00
 #define AUTONEG_ENABLE          0x01
 
-/* Mode MDI or MDI-X */
-#define ETH_TP_MDI_INVALID      0x00
-#define ETH_TP_MDI              0x01
-#define ETH_TP_MDI_X            0x02
+/* MDI or MDI-X status/control - if MDI/MDI_X/AUTO is set then
+ * the driver is required to renegotiate link
+ */
+#define ETH_TP_MDI_INVALID      0x00 /* status: unknown; control: unsupported */
+#define ETH_TP_MDI              0x01 /* status: MDI;     control: force MDI */
+#define ETH_TP_MDI_X            0x02 /* status: MDI-X;   control: force MDI-X */
+#define ETH_TP_MDI_AUTO         0x03 /*                  control: auto-select */
 
 /* Wake-On-Lan options. */
 #define WAKE_PHY                (1 << 0)