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r8169: add support for returning tx_lpi_timer in ethtool get_eee

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Add support for returning the tx_lpi_timer value to userspace.
This is supported by few chip versions only: RTL8168h/RTL8125/RTL8126

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/4eee9c34-c5d6-4c96-9b05-455896dea59a@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Heiner Kallweit 2024-02-12 19:59:26 +01:00 committed by Jakub Kicinski
parent 57d2d2c8f1
commit 9c50139727
1 changed files with 21 additions and 1 deletions
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22
drivers/net/ethernet/realtek/r8169_main.c
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@ -2053,14 +2053,34 @@ static void rtl_set_eee_txidle_timer(struct rtl8169_private *tp)
}
}
static unsigned int r8169_get_tx_lpi_timer_us(struct rtl8169_private *tp)
{
unsigned int speed = tp->phydev->speed;
unsigned int timer = tp->tx_lpi_timer;
if (!timer || speed == SPEED_UNKNOWN)
return 0;
/* tx_lpi_timer value is in bytes */
return DIV_ROUND_CLOSEST(timer * BITS_PER_BYTE, speed);
}
static int rtl8169_get_eee(struct net_device *dev, struct ethtool_keee *data)
{
struct rtl8169_private *tp = netdev_priv(dev);
int ret;
if (!rtl_supports_eee(tp))
return -EOPNOTSUPP;
return phy_ethtool_get_eee(tp->phydev, data);
ret = phy_ethtool_get_eee(tp->phydev, data);
if (ret)
return ret;
data->tx_lpi_timer = r8169_get_tx_lpi_timer_us(tp);
data->tx_lpi_enabled = data->tx_lpi_timer ? data->eee_enabled : false;
return 0;
}
static int rtl8169_set_eee(struct net_device *dev, struct ethtool_keee *data)