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igc: Fix ambiguity in the ethtool advertising

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[ Upstream commit e7684d29efdf37304c62bb337ea55b3428ca118e ]

The 'ethtool_convert_link_mode_to_legacy_u32' method does not allow us to
advertise 2500M speed support and TP (twisted pair) properly. Convert to
'ethtool_link_ksettings_test_link_mode' to advertise supported speed and
eliminate ambiguity.

Fixes: 8c5ad0dae9 ("igc: Add ethtool support")
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Suggested-by: Vitaly Lifshits <vitaly.lifshits@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20231019203641.3661960-1-jacob.e.keller@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sasha Neftin 2023-10-19 13:36:41 -07:00 committed by Greg Kroah-Hartman
parent 3b098edafe
commit ec885679fa
1 changed files with 25 additions and 10 deletions
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35
drivers/net/ethernet/intel/igc/igc_ethtool.c
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@ -1768,7 +1768,7 @@ static int igc_set_link_ksettings(struct net_device *netdev,
{
struct igc_adapter *adapter = netdev_priv(netdev);
struct igc_hw *hw = &adapter->hw;
u32 advertising;
u16 advertised = 0;
/* When adapter in resetting mode, autoneg/speed/duplex
* cannot be changed
@ -1794,18 +1794,33 @@ static int igc_set_link_ksettings(struct net_device *netdev,
while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
usleep_range(1000, 2000);
ethtool_convert_link_mode_to_legacy_u32(&advertising,
cmd->link_modes.advertising);
/* Converting to legacy u32 drops ETHTOOL_LINK_MODE_2500baseT_Full_BIT.
* We have to check this and convert it to ADVERTISE_2500_FULL
* (aka ETHTOOL_LINK_MODE_2500baseX_Full_BIT) explicitly.
*/
if (ethtool_link_ksettings_test_link_mode(cmd, advertising, 2500baseT_Full))
advertising |= ADVERTISE_2500_FULL;
if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
2500baseT_Full))
advertised |= ADVERTISE_2500_FULL;
if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
1000baseT_Full))
advertised |= ADVERTISE_1000_FULL;
if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
100baseT_Full))
advertised |= ADVERTISE_100_FULL;
if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
100baseT_Half))
advertised |= ADVERTISE_100_HALF;
if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
10baseT_Full))
advertised |= ADVERTISE_10_FULL;
if (ethtool_link_ksettings_test_link_mode(cmd, advertising,
10baseT_Half))
advertised |= ADVERTISE_10_HALF;
if (cmd->base.autoneg == AUTONEG_ENABLE) {
hw->mac.autoneg = 1;
hw->phy.autoneg_advertised = advertising;
hw->phy.autoneg_advertised = advertised;
if (adapter->fc_autoneg)
hw->fc.requested_mode = igc_fc_default;
} else {