From 9c50139727265c088f936e496777bf588850e9f1 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Mon, 12 Feb 2024 19:59:26 +0100 Subject: [PATCH] r8169: add support for returning tx_lpi_timer in ethtool get_eee 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 Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/4eee9c34-c5d6-4c96-9b05-455896dea59a@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/realtek/r8169_main.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 5244f24a7cb8..7d3f6d59be8c 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -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)