From 18760f1e74e8dfe8f30d4891e66163d1e6feb893 Mon Sep 17 00:00:00 2001
From: Chaitanya Lala <clala@riverbed.com>
Date: Mon, 8 Jun 2009 14:28:54 +0000
Subject: [PATCH] e1000e: Expose MDI-X status via ethtool change
Ethtool is a standard way of getting information about
ethernet interfaces. We enhance ethtool kernel interface
& e1000e to make the MDI-X status readable via ethtool in
userspace.
Signed-off-by: Chaitanya Lala <clala@riverbed.com>
Signed-off-by: Arthur Jones <ajones@riverbed.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/e1000e/ethtool.c | 9 +++++++++
include/linux/ethtool.h | 8 +++++++-
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index 3d6435617527..1bf4d2a5d34f 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -167,6 +167,15 @@ static int e1000_get_settings(struct net_device *netdev,
ecmd->autoneg = ((hw->phy.media_type == e1000_media_type_fiber) ||
hw->mac.autoneg) ? AUTONEG_ENABLE : AUTONEG_DISABLE;
+
+ /* MDI-X => 2; MDI =>1; Invalid =>0 */
+ if ((hw->phy.media_type == e1000_media_type_copper) &&
+ !hw->mac.get_link_status)
+ ecmd->eth_tp_mdix = hw->phy.is_mdix ? ETH_TP_MDI_X :
+ ETH_TP_MDI;
+ else
+ ecmd->eth_tp_mdix = ETH_TP_MDI_INVALID;
+
return 0;
}
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 380b04272bf1..9b660bd2e2b3 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -30,7 +30,8 @@ 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 eth_tp_mdix;
+ __u8 reserved2;
__u32 lp_advertising; /* Features the link partner advertises */
__u32 reserved[2];
};
@@ -632,6 +633,11 @@ 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
+
/* Wake-On-Lan options. */
#define WAKE_PHY (1 << 0)
#define WAKE_UCAST (1 << 1)
--
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