[PATCH net-next v2 08/12] ax88179_178a: Add support for ethtool pause parameter configuration
From: Birger Koblitz <hidden>
Date: 2026-07-08 18:40:19
Also in:
linux-usb, lkml
Subsystem:
networking drivers, the rest, usb networking drivers · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
The AX179A-based chips support pause parameter configuration. Make it available through ethtool ops. Signed-off-by: Birger Koblitz <redacted> --- drivers/net/usb/ax88179_178a.c | 48 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+)
diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c
index 5f3a6d85cc4054e43e085531fcd715a990d87c6a..925b66f8b8fff10578056bb13e15dc4ba0f88ecc 100644
--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c@@ -973,6 +973,52 @@ static int ax88179_set_link_ksettings(struct net_device *net, return mii_ethtool_set_link_ksettings(&dev->mii, cmd); } +static void ax88179a_get_pauseparam(struct net_device *net, struct ethtool_pauseparam *pause) +{ + struct usbnet *dev = netdev_priv(net); + struct ax88179_data *data; + + data = dev->driver_priv; + pause->autoneg = data->pause_autoneg; + pause->tx_pause = data->pause_tx; + pause->rx_pause = data->pause_rx; +} + +static int ax88179a_set_pauseparam(struct net_device *net, struct ethtool_pauseparam *pause) +{ + struct usbnet *dev = netdev_priv(net); + struct ax88179_data *data; + u16 old, new, bmcr; + u8 cap = 0; + + data = dev->driver_priv; + + if (data->chip_version < AX_VERSION_AX88179A) + return -EOPNOTSUPP; + + bmcr = ax88179_mdio_read(net, dev->mii.phy_id, MII_BMCR); + if (pause->autoneg && !(bmcr & BMCR_ANENABLE)) + return -EINVAL; + + data->pause_autoneg = pause->autoneg; + data->pause_tx = pause->tx_pause; + data->pause_rx = pause->rx_pause; + + if (pause->rx_pause) + cap |= FLOW_CTRL_RX; + + if (pause->tx_pause) + cap |= FLOW_CTRL_TX; + + old = ax88179_mdio_read(net, dev->mii.phy_id, MII_ADVERTISE); + new = (old & ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) | + mii_advertise_flowctrl(cap); + if (old != new) + ax88179_mdio_write(net, dev->mii.phy_id, MII_ADVERTISE, new); + + return mii_nway_restart(&dev->mii); +} + static int ax88179_ethtool_get_eee(struct usbnet *dev, struct ethtool_keee *data) {
@@ -1144,6 +1190,8 @@ static const struct ethtool_ops ax88179_ethtool_ops = { .nway_reset = usbnet_nway_reset, .get_link_ksettings = ax88179_get_link_ksettings, .set_link_ksettings = ax88179_set_link_ksettings, + .get_pauseparam = ax88179a_get_pauseparam, + .set_pauseparam = ax88179a_set_pauseparam, .get_ts_info = ethtool_op_get_ts_info, };
--
2.47.3