[PATCH -v2] drivers: net: ethernet: intel: e1000e: fix ethtool autoneg off for non-copper

[PATCH -v2] drivers: net: ethernet: intel: e1000e: fix ethtool autoneg off for non-copper

[Daniel Walker]

From: Steve Shih <sshih@cisco.com>

This patch fixes the issues for disabling auto-negotiation and forcing
speed and duplex settings for the non-copper media.

For non-copper media, e1000_get_settings should return ETH_TP_MDI_INVALID for
eth_tp_mdix_ctrl instead of ETH_TP_MDI_AUTO so subsequent e1000_set_settings
call would not fail with -EOPNOTSUPP.

e1000_set_spd_dplx should not automatically turn autoneg back on for forced
1000 Mbps full duplex settings for non-copper media.

Cc: xe-kernel@external.cisco.com
Cc: Daniel Walker <dwalker@fifo99.com>
Signed-off-by: Steve Shih <sshih@cisco.com>
---
 drivers/net/ethernet/intel/e1000e/ethtool.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c
index 6cab1f3..b6b8290 100644
--- a/drivers/net/ethernet/intel/e1000e/ethtool.c
+++ b/drivers/net/ethernet/intel/e1000e/ethtool.c
@@ -201,6 +201,9 @@ static int e1000_get_settings(struct net_device *netdev,
 	else
 		ecmd->eth_tp_mdix_ctrl = hw->phy.mdix;
 
+	if (hw->phy.media_type != e1000_media_type_copper)
+		ecmd->eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
+
 	return 0;
 }
 
@@ -236,8 +239,12 @@ static int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx)
 		mac->forced_speed_duplex = ADVERTISE_100_FULL;
 		break;
 	case SPEED_1000 + DUPLEX_FULL:
-		mac->autoneg = 1;
-		adapter->hw.phy.autoneg_advertised = ADVERTISE_1000_FULL;
+		if (adapter->hw.phy.media_type == e1000_media_type_copper) {
+			mac->autoneg = 1;
+			adapter->hw.phy.autoneg_advertised =
+				ADVERTISE_1000_FULL;
+		} else
+			mac->forced_speed_duplex = ADVERTISE_1000_FULL;
 		break;
 	case SPEED_1000 + DUPLEX_HALF:	/* not supported */
 	default:
-- 
2.5.0

RE: [PATCH -v2] drivers: net: ethernet: intel: e1000e: fix ethtool autoneg off for non-copper

[Brown, Aaron F]

> From: netdev-owner@vger.kernel.org [mailto:netdev-
> owner@vger.kernel.org] On Behalf Of Daniel Walker
> Sent: Tuesday, April 5, 2016 11:30 AM
> To: Ruinskiy, Dima <dima.ruinskiy@intel.com>; Kirsher, Jeffrey T
> <jeffrey.t.kirsher@intel.com>; Brandeburg, Jesse
> <jesse.brandeburg@intel.com>; Nelson, Shannon
> <shannon.nelson@intel.com>; Wyborny, Carolyn
> <carolyn.wyborny@intel.com>; Skidmore, Donald C
> <donald.c.skidmore@intel.com>; Allan, Bruce W <bruce.w.allan@intel.com>;
> Ronciak, John <john.ronciak@intel.com>; Williams, Mitch A
> <mitch.a.williams@intel.com>
> Cc: Steve Shih <sshih@cisco.com>; xe-kernel@external.cisco.com; Daniel
> Walker <dwalker@fifo99.com>; intel-wired-lan@lists.osuosl.org;
> netdev@vger.kernel.org; linux-kernel@vger.kernel.org
> Subject: [PATCH -v2] drivers: net: ethernet: intel: e1000e: fix ethtool autoneg
> off for non-copper
> 
> From: Steve Shih <sshih@cisco.com>
> 
> This patch fixes the issues for disabling auto-negotiation and forcing
> speed and duplex settings for the non-copper media.
> 
> For non-copper media, e1000_get_settings should return
> ETH_TP_MDI_INVALID for
> eth_tp_mdix_ctrl instead of ETH_TP_MDI_AUTO so subsequent
> e1000_set_settings
> call would not fail with -EOPNOTSUPP.
> 
> e1000_set_spd_dplx should not automatically turn autoneg back on for
> forced
> 1000 Mbps full duplex settings for non-copper media.
> 
> Cc: xe-kernel@external.cisco.com
> Cc: Daniel Walker <dwalker@fifo99.com>
> Signed-off-by: Steve Shih <sshih@cisco.com>
> ---
>  drivers/net/ethernet/intel/e1000e/ethtool.c | 11 +++++++++--
>  1 file changed, 9 insertions(+), 2 deletions(-)

Tested-by: Aaron Brown <aaron.f.brown@intel.com>