ixgbe: Fix tx_restart_queue/non_eop_desc statistics counters

Fix the restart_queue and non_eop_desc counters from being
double-counted.  They are cumulative in each ring, so we don't want to
add them to the cumulative result in the adapter's master counter.
Otherwise, the stats will be inaccurate

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

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 35ea8c9..5292748 100644 (file)
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -4511,6 +4511,7 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
        struct ixgbe_hw *hw = &adapter->hw;
        u64 total_mpc = 0;
        u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot;
+       u64 non_eop_descs = 0, restart_queue = 0;
 
        if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) {
                u64 rsc_count = 0;
@@ -4528,10 +4529,12 @@ void ixgbe_update_stats(struct ixgbe_adapter *adapter)
 
        /* gather some stats to the adapter struct that are per queue */
        for (i = 0; i < adapter->num_tx_queues; i++)
-               adapter->restart_queue += adapter->tx_ring[i].restart_queue;
+               restart_queue += adapter->tx_ring[i].restart_queue;
+       adapter->restart_queue = restart_queue;
 
        for (i = 0; i < adapter->num_rx_queues; i++)
-               adapter->non_eop_descs += adapter->tx_ring[i].non_eop_descs;
+               non_eop_descs += adapter->rx_ring[i].non_eop_descs;
+       adapter->non_eop_descs = non_eop_descs;
 
        adapter->stats.crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS);
        for (i = 0; i < 8; i++) {