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: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Acked-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index d0b98708e6ce..86c8bad609b9 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -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));