diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_ethtool.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_ethtool.c b/drivers/net/ethernet/intel/igb/igb_ethtool.c index 03137e2..ce9b5a9 100644 --- a/drivers/net/ethernet/intel/igb/igb_ethtool.c +++ b/drivers/net/ethernet/intel/igb/igb_ethtool.c @@ -2784,6 +2784,90 @@ static void igb_ethtool_complete(struct net_device *netdev) pm_runtime_put(&adapter->pdev->dev); } +static u32 igb_get_rxfh_indir_size(struct net_device *netdev) +{ + return IGB_RETA_SIZE; +} + +static int igb_get_rxfh_indir(struct net_device *netdev, u32 *indir) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + int i; + + for (i = 0; i < IGB_RETA_SIZE; i++) + indir[i] = adapter->rss_indir_tbl[i]; + + return 0; +} + +void igb_write_rss_indir_tbl(struct igb_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 reg = E1000_RETA(0); + u32 shift = 0; + int i = 0; + + switch (hw->mac.type) { + case e1000_82575: + shift = 6; + break; + case e1000_82576: + /* 82576 supports 2 RSS queues for SR-IOV */ + if (adapter->vfs_allocated_count) + shift = 3; + break; + default: + break; + } + + while (i < IGB_RETA_SIZE) { + u32 val = 0; + int j; + + for (j = 3; j >= 0; j--) { + val <<= 8; + val |= adapter->rss_indir_tbl[i + j]; + } + + wr32(reg, val << shift); + reg += 4; + i += 4; + } +} + +static int igb_set_rxfh_indir(struct net_device *netdev, const u32 *indir) +{ + struct igb_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + int i; + u32 num_queues; + + num_queues = adapter->rss_queues; + + switch (hw->mac.type) { + case e1000_82576: + /* 82576 supports 2 RSS queues for SR-IOV */ + if (adapter->vfs_allocated_count) + num_queues = 2; + break; + default: + break; + } + + /* Verify user input. */ + for (i = 0; i < IGB_RETA_SIZE; i++) + if (indir[i] >= num_queues) + return -EINVAL; + + + for (i = 0; i < IGB_RETA_SIZE; i++) + adapter->rss_indir_tbl[i] = indir[i]; + + igb_write_rss_indir_tbl(adapter); + + return 0; +} + static const struct ethtool_ops igb_ethtool_ops = { .get_settings = igb_get_settings, .set_settings = igb_set_settings, @@ -2817,6 +2901,9 @@ static const struct ethtool_ops igb_ethtool_ops = { .set_eee = igb_set_eee, .get_module_info = igb_get_module_info, .get_module_eeprom = igb_get_module_eeprom, + .get_rxfh_indir_size = igb_get_rxfh_indir_size, + .get_rxfh_indir = igb_get_rxfh_indir, + .set_rxfh_indir = igb_set_rxfh_indir, .begin = igb_ethtool_begin, .complete = igb_ethtool_complete, }; |