igb: remove rx checksum good counter

Counting packets with a good checksum can cause a significant amount of cache
line bouncing due to the shared counter being written to by all of the queues.
In order to avoid this I am removing the counter since we still have the
checksum failed counter which will tell us if there are any issues.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 0 insertions, 3 deletions

diff --git a/drivers/net/igb/igb.h b/drivers/net/igb/igb.h
index 86492c8957e..d27dcd1289c 100644
--- a/drivers/net/igb/igb.h
+++ b/drivers/net/igb/igb.h
@@ -254,7 +254,6 @@ struct igb_adapter {
         int num_rx_queues;
 
         u64 hw_csum_err;
-        u64 hw_csum_good;
         u32 alloc_rx_buff_failed;
         u32 gorc;
         u64 gorc_old;
diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c
index f71276fec3f..2929546115c 100644
--- a/drivers/net/igb/igb_ethtool.c
+++ b/drivers/net/igb/igb_ethtool.c
@@ -95,7 +95,6 @@ static const struct igb_stats igb_gstrings_stats[] = {
         { "tx_flow_control_xon", IGB_STAT(stats.xontxc) },
         { "tx_flow_control_xoff", IGB_STAT(stats.xofftxc) },
         { "rx_long_byte_count", IGB_STAT(stats.gorc) },
-        { "rx_csum_offload_good", IGB_STAT(hw_csum_good) },
         { "rx_csum_offload_errors", IGB_STAT(hw_csum_err) },
         { "tx_dma_out_of_sync", IGB_STAT(stats.doosync) },
         { "alloc_rx_buff_failed", IGB_STAT(alloc_rx_buff_failed) },
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index c15eb4c3916..e1d1c0c984b 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -4827,7 +4827,6 @@ static inline void igb_rx_checksum_adv(struct igb_adapter *adapter,
                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 
         dev_dbg(&adapter->pdev->dev, "cksum success: bits %08X\n", status_err);
-        adapter->hw_csum_good++;
 }
 
 static inline u16 igb_get_hlen(struct igb_adapter *adapter,