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Commit d51019a4 authored by PJ Waskiewicz's avatar PJ Waskiewicz Committed by David S. Miller
Browse files

ixgbe: Fix an accounting problem when the Rx FIFO is full 



The rx_no_dma_resources counter reported by ethtool -S ethX is not
counting correctly.  In 82599, the queue mappings for the counters need
to be mapped properly, and accounted for properly.

Signed-off-by: default avatarPeter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Acked-by: default avatarMallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1339b9e9

drivers/net/ixgbe/ixgbe_main.c

+6 −1
Original line number Diff line number Diff line
@@ -3629,6 +3629,12 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter) 
	u64 total_mpc = 0;

	u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;



	if (hw->mac.type == ixgbe_mac_82599EB) {

		for (i = 0; i < 16; i++)

			adapter->hw_rx_no_dma_resources +=

			                     IXGBE_READ_REG(hw, IXGBE_QPRDC(i));

	}



	adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);

	for (i = 0; i < 8; i++) {

		/* for packet buffers not used, the register should read 0 */
@@ -3648,7 +3654,6 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter) 
			adapter->stats.pxoffrxc[i] += IXGBE_READ_REG(hw,

			                                   IXGBE_PXOFFRXCNT(i));

			adapter->stats.qprdc[i] += IXGBE_READ_REG(hw, IXGBE_QPRDC(i));

			adapter->hw_rx_no_dma_resources += adapter->stats.qprdc[i];

		} else {

			adapter->stats.pxonrxc[i] += IXGBE_READ_REG(hw,

			                                      IXGBE_PXONRXC(i));