git.openwrt.org Git - openwrt/staging/wigyori.git/blob

   1 From 9c50139727265c088f936e496777bf588850e9f1 Mon Sep 17 00:00:00 2001
   2 From: Heiner Kallweit <hkallweit1@gmail.com>
   3 Date: Mon, 12 Feb 2024 19:59:26 +0100
   4 Subject: [PATCH] r8169: add support for returning tx_lpi_timer in
   5  ethtool get_eee
   6
   7 Add support for returning the tx_lpi_timer value to userspace.
   8 This is supported by few chip versions only: RTL8168h/RTL8125/RTL8126
   9
  10 Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
  11 Reviewed-by: Andrew Lunn <andrew@lunn.ch>
  12 Link: https://lore.kernel.org/r/4eee9c34-c5d6-4c96-9b05-455896dea59a@gmail.com
  13 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  14 ---
  15  drivers/net/ethernet/realtek/r8169_main.c | 22 +++++++++++++++++++++-
  16  1 file changed, 21 insertions(+), 1 deletion(-)
  17
  18 --- a/drivers/net/ethernet/realtek/r8169_main.c
  19 +++ b/drivers/net/ethernet/realtek/r8169_main.c
  20 @@ -2103,14 +2103,34 @@ static void rtl_set_eee_txidle_timer(str
  21         }
  22  }
  23
  24 +static unsigned int r8169_get_tx_lpi_timer_us(struct rtl8169_private *tp)
  25 +{
  26 +       unsigned int speed = tp->phydev->speed;
  27 +       unsigned int timer = tp->tx_lpi_timer;
  28 +
  29 +       if (!timer || speed == SPEED_UNKNOWN)
  30 +               return 0;
  31 +
  32 +       /* tx_lpi_timer value is in bytes */
  33 +       return DIV_ROUND_CLOSEST(timer * BITS_PER_BYTE, speed);
  34 +}
  35 +
  36  static int rtl8169_get_eee(struct net_device *dev, struct ethtool_eee *data)
  37  {
  38         struct rtl8169_private *tp = netdev_priv(dev);
  39 +       int ret;
  40
  41         if (!rtl_supports_eee(tp))
  42                 return -EOPNOTSUPP;
  43
  44 -       return phy_ethtool_get_eee(tp->phydev, data);
  45 +       ret = phy_ethtool_get_eee(tp->phydev, data);
  46 +       if (ret)
  47 +               return ret;
  48 +
  49 +       data->tx_lpi_timer = r8169_get_tx_lpi_timer_us(tp);
  50 +       data->tx_lpi_enabled = data->tx_lpi_timer ? data->eee_enabled : false;
  51 +
  52 +       return 0;
  53  }
  54
  55  static int rtl8169_set_eee(struct net_device *dev, struct ethtool_eee *data)