igb: count Rx FIFO errors correctly
Don't aggregate rx_no_buffer_count into rx_fifo_errors. RNBC counts packets that get queued temporarily in the adapter's FIFO. These packets are not dropped and are not errors. The correct counter is rx_missed_errors (MPC). Signed-off-by: Mitch Williams <mitch.a.williams@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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1 changed files with 5 additions and 5 deletions
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@ -3963,7 +3963,7 @@ void igb_update_stats(struct igb_adapter *adapter)
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struct net_device_stats *net_stats = igb_get_stats(adapter->netdev);
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struct e1000_hw *hw = &adapter->hw;
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struct pci_dev *pdev = adapter->pdev;
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u32 rnbc, reg;
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u32 reg, mpc;
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u16 phy_tmp;
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int i;
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u64 bytes, packets;
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@ -4021,7 +4021,9 @@ void igb_update_stats(struct igb_adapter *adapter)
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adapter->stats.symerrs += rd32(E1000_SYMERRS);
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adapter->stats.sec += rd32(E1000_SEC);
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adapter->stats.mpc += rd32(E1000_MPC);
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mpc = rd32(E1000_MPC);
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adapter->stats.mpc += mpc;
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net_stats->rx_fifo_errors += mpc;
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adapter->stats.scc += rd32(E1000_SCC);
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adapter->stats.ecol += rd32(E1000_ECOL);
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adapter->stats.mcc += rd32(E1000_MCC);
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@ -4036,9 +4038,7 @@ void igb_update_stats(struct igb_adapter *adapter)
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adapter->stats.gptc += rd32(E1000_GPTC);
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adapter->stats.gotc += rd32(E1000_GOTCL);
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rd32(E1000_GOTCH); /* clear GOTCL */
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rnbc = rd32(E1000_RNBC);
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adapter->stats.rnbc += rnbc;
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net_stats->rx_fifo_errors += rnbc;
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adapter->stats.rnbc += rd32(E1000_RNBC);
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adapter->stats.ruc += rd32(E1000_RUC);
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adapter->stats.rfc += rd32(E1000_RFC);
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adapter->stats.rjc += rd32(E1000_RJC);
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