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net: hns3: disable auto-negotiation off with 1000M setting in ethtool 

The 802.3 specification does not specify the behavior of
auto-negotiation off with 1000M in PHY. Therefore, some PHY
compatibility issues occur. This patch forbids the setting of
this unreasonable mode by ethtool in driver.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Yufeng Mo 2020-05-09 17:27:41 +08:00 committed by Jakub Kicinski
parent b4401a044a
commit 81c287e3dd
1 changed files with 6 additions and 1 deletions
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7
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
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@ -773,8 +773,13 @@ static int hns3_set_link_ksettings(struct net_device *netdev,
cmd->base.autoneg, cmd->base.speed, cmd->base.duplex);
/* Only support ksettings_set for netdev with phy attached for now */
if (netdev->phydev)
if (netdev->phydev) {
if (cmd->base.speed == SPEED_1000 &&
cmd->base.autoneg == AUTONEG_DISABLE)
return -EINVAL;
return phy_ethtool_ksettings_set(netdev->phydev, cmd);
}
if (handle->pdev->revision == 0x20)
return -EOPNOTSUPP;