When the size of a packet in Rx channel is less than the minimum
or greater than the maximum, the packet will be simultaneously
counted by RLEC(Receive Length Error Count) and
RUC(Receive Under Size Count)/ROC(Receive Oversize Count) registers.

This patch fixed the issue of counting a length error packet twice
when counting the total number of received error packets.

Fixes: e6defdfddc3b ("net/igc: enable statistics")
Cc: sta...@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zh...@intel.com>
---

V2: Refine commit log
---
 drivers/net/igc/igc_ethdev.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/igc/igc_ethdev.c b/drivers/net/igc/igc_ethdev.c
index 0ea6e2a..c398701 100644
--- a/drivers/net/igc/igc_ethdev.c
+++ b/drivers/net/igc/igc_ethdev.c
@@ -1901,8 +1901,7 @@ static int eth_igc_vlan_tpid_set(struct rte_eth_dev *dev,
 
        /* Rx Errors */
        rte_stats->imissed = stats->mpc;
-       rte_stats->ierrors = stats->crcerrs +
-                       stats->rlec + stats->ruc + stats->roc +
+       rte_stats->ierrors = stats->crcerrs + stats->rlec +
                        stats->rxerrc + stats->algnerrc;
 
        /* Tx Errors */
-- 
1.8.3.1

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