[PATCH net-next v23 10/13] rtase: Implement ethtool function

[Justin Lai]

Implement the ethtool function to support users to obtain network card
information, including obtaining various device settings, Report whether
physical link is up, Report pause parameters, Set pause parameters,
Return extended statistics about the device.

Signed-off-by: Justin Lai <justinlai0215@xxxxxxxxxxx>
---
 .../net/ethernet/realtek/rtase/rtase_main.c   | 92 +++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/drivers/net/ethernet/realtek/rtase/rtase_main.c b/drivers/net/ethernet/realtek/rtase/rtase_main.c
index a4799311bd39..ce5a5abe47ec 100644
--- a/drivers/net/ethernet/realtek/rtase/rtase_main.c
+++ b/drivers/net/ethernet/realtek/rtase/rtase_main.c
@@ -1745,9 +1745,101 @@ static void rtase_get_mac_address(struct net_device *dev)
 	rtase_rar_set(tp, dev->dev_addr);
 }
 
+static void rtase_get_drvinfo(struct net_device *dev,
+			      struct ethtool_drvinfo *info)
+{
+	const struct rtase_private *tp = netdev_priv(dev);
+
+	strscpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
+	strscpy(info->bus_info, pci_name(tp->pdev), sizeof(info->bus_info));
+}
+
+static int rtase_get_settings(struct net_device *dev,
+			      struct ethtool_link_ksettings *cmd)
+{
+	u32 supported = SUPPORTED_MII | SUPPORTED_Pause | SUPPORTED_Asym_Pause;
+
+	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
+						supported);
+	cmd->base.speed = SPEED_5000;
+	cmd->base.duplex = DUPLEX_FULL;
+	cmd->base.port = PORT_MII;
+	cmd->base.autoneg = AUTONEG_DISABLE;
+
+	return 0;
+}
+
+static void rtase_get_pauseparam(struct net_device *dev,
+				 struct ethtool_pauseparam *pause)
+{
+	const struct rtase_private *tp = netdev_priv(dev);
+	u16 value = rtase_r16(tp, RTASE_CPLUS_CMD);
+
+	pause->autoneg = AUTONEG_DISABLE;
+
+	if ((value & (RTASE_FORCE_TXFLOW_EN | RTASE_FORCE_RXFLOW_EN)) ==
+	    (RTASE_FORCE_TXFLOW_EN | RTASE_FORCE_RXFLOW_EN)) {
+		pause->rx_pause = 1;
+		pause->tx_pause = 1;
+	} else if (value & RTASE_FORCE_TXFLOW_EN) {
+		pause->tx_pause = 1;
+	} else if (value & RTASE_FORCE_RXFLOW_EN) {
+		pause->rx_pause = 1;
+	}
+}
+
+static int rtase_set_pauseparam(struct net_device *dev,
+				struct ethtool_pauseparam *pause)
+{
+	const struct rtase_private *tp = netdev_priv(dev);
+	u16 value = rtase_r16(tp, RTASE_CPLUS_CMD);
+
+	if (pause->autoneg)
+		return -EOPNOTSUPP;
+
+	value &= ~(RTASE_FORCE_TXFLOW_EN | RTASE_FORCE_RXFLOW_EN);
+
+	if (pause->tx_pause)
+		value |= RTASE_FORCE_TXFLOW_EN;
+
+	if (pause->rx_pause)
+		value |= RTASE_FORCE_RXFLOW_EN;
+
+	rtase_w16(tp, RTASE_CPLUS_CMD, value);
+	return 0;
+}
+
+static void rtase_get_eth_mac_stats(struct net_device *dev,
+				    struct ethtool_eth_mac_stats *stats)
+{
+	struct rtase_private *tp = netdev_priv(dev);
+	const struct rtase_counters *counters;
+
+	counters = tp->tally_vaddr;
+
+	rtase_dump_tally_counter(tp);
+
+	stats->FramesTransmittedOK = le64_to_cpu(counters->tx_packets);
+	stats->FramesReceivedOK = le64_to_cpu(counters->rx_packets);
+	stats->FramesLostDueToIntMACXmitError =
+		le64_to_cpu(counters->tx_errors);
+	stats->BroadcastFramesReceivedOK = le64_to_cpu(counters->rx_broadcast);
+}
+
+static const struct ethtool_ops rtase_ethtool_ops = {
+	.get_drvinfo = rtase_get_drvinfo,
+	.get_link = ethtool_op_get_link,
+	.get_link_ksettings = rtase_get_settings,
+	.get_pauseparam = rtase_get_pauseparam,
+	.set_pauseparam = rtase_set_pauseparam,
+	.get_eth_mac_stats = rtase_get_eth_mac_stats,
+	.get_ts_info = ethtool_op_get_ts_info,
+};
+
 static void rtase_init_netdev_ops(struct net_device *dev)
 {
 	dev->netdev_ops = &rtase_netdev_ops;
+	dev->ethtool_ops = &rtase_ethtool_ops;
 }
 
 static void rtase_reset_interrupt(struct pci_dev *pdev,
-- 
2.34.1