diff options
Diffstat (limited to 'drivers/net/e1000e/ethtool.c')
| -rw-r--r-- | drivers/net/e1000e/ethtool.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c index c894a6f03bb4..ce045acce63e 100644 --- a/drivers/net/e1000e/ethtool.c +++ b/drivers/net/e1000e/ethtool.c @@ -1770,6 +1770,47 @@ static int e1000_phys_id(struct net_device *netdev, u32 data) return 0; } +static int e1000_get_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + if (adapter->itr_setting <= 3) + ec->rx_coalesce_usecs = adapter->itr_setting; + else + ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting; + + return 0; +} + +static int e1000_set_coalesce(struct net_device *netdev, + struct ethtool_coalesce *ec) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + + if ((ec->rx_coalesce_usecs > E1000_MAX_ITR_USECS) || + ((ec->rx_coalesce_usecs > 3) && + (ec->rx_coalesce_usecs < E1000_MIN_ITR_USECS)) || + (ec->rx_coalesce_usecs == 2)) + return -EINVAL; + + if (ec->rx_coalesce_usecs <= 3) { + adapter->itr = 20000; + adapter->itr_setting = ec->rx_coalesce_usecs; + } else { + adapter->itr = (1000000 / ec->rx_coalesce_usecs); + adapter->itr_setting = adapter->itr & ~3; + } + + if (adapter->itr_setting != 0) + ew32(ITR, 1000000000 / (adapter->itr * 256)); + else + ew32(ITR, 0); + + return 0; +} + static int e1000_nway_reset(struct net_device *netdev) { struct e1000_adapter *adapter = netdev_priv(netdev); @@ -1845,6 +1886,8 @@ static const struct ethtool_ops e1000_ethtool_ops = { .phys_id = e1000_phys_id, .get_ethtool_stats = e1000_get_ethtool_stats, .get_sset_count = e1000e_get_sset_count, + .get_coalesce = e1000_get_coalesce, + .set_coalesce = e1000_set_coalesce, }; void e1000e_set_ethtool_ops(struct net_device *netdev) |