[Intel-wired-lan] [iwl-net v1 1/1] igc: Fix Energy Efficient Ethernet support declaration

[Sasha Neftin]

The commit 01cf893bf0f4 ("net: intel: i40e/igc: Remove setting Autoneg in
EEE capabilities") removed SUPPORTED_Autoneg field but left inappropriate
ethtool_keee structure initialization. When "ethtool --show <device>"
(get_eee) invoke, the 'ethtool_keee' structure was accidentally overridden.
Remove the 'ethtool_keee' overriding and add EEE declaration as per IEEE
specification that allows reporting Energy Efficient Ethernet capabilities.

Examples:
Before fix:
ethtool --show-eee enp174s0
EEE settings for enp174s0:
        EEE status: not supported

After fix:
EEE settings for enp174s0:
        EEE status: disabled
        Tx LPI: disabled
        Supported EEE link modes:  100baseT/Full
                                   1000baseT/Full
                                   2500baseT/Full

Fixes: 01cf893bf0f4 ("net: intel: i40e/igc: Remove setting Autoneg in EEE 
capabilities")
Suggested-by: Dima Ruinskiy <dima.ruins...@intel.com>
Signed-off-by: Sasha Neftin <sasha.nef...@intel.com>
---
 drivers/net/ethernet/intel/igc/igc_ethtool.c | 9 +++++++--
 drivers/net/ethernet/intel/igc/igc_main.c    | 4 ++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/igc/igc_ethtool.c 
b/drivers/net/ethernet/intel/igc/igc_ethtool.c
index f2c4f1966bb0..0cd2bd695db1 100644
--- a/drivers/net/ethernet/intel/igc/igc_ethtool.c
+++ b/drivers/net/ethernet/intel/igc/igc_ethtool.c
@@ -1629,12 +1629,17 @@ static int igc_ethtool_get_eee(struct net_device 
*netdev,
        struct igc_hw *hw = &adapter->hw;
        u32 eeer;
 
+       linkmode_set_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
+                        edata->supported);
+       linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
+                        edata->supported);
+       linkmode_set_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
+                        edata->supported);
+
        if (hw->dev_spec._base.eee_enable)
                mii_eee_cap1_mod_linkmode_t(edata->advertised,
                                            adapter->eee_advert);
 
-       *edata = adapter->eee;
-
        eeer = rd32(IGC_EEER);
 
        /* EEE status on negotiated link */
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c 
b/drivers/net/ethernet/intel/igc/igc_main.c
index b5bcabab7a1d..ba154097d7b0 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -12,6 +12,7 @@
 #include <linux/bpf_trace.h>
 #include <net/xdp_sock_drv.h>
 #include <linux/pci.h>
+#include <linux/mdio.h>
 
 #include <net/ipv6.h>
 
@@ -4975,6 +4976,9 @@ void igc_up(struct igc_adapter *adapter)
        /* start the watchdog. */
        hw->mac.get_link_status = true;
        schedule_work(&adapter->watchdog_task);
+
+       adapter->eee_advert = MDIO_EEE_100TX | MDIO_EEE_1000T |
+                             MDIO_EEE_2_5GT;
 }
 
 /**
-- 
2.34.1