qeth: add statistics for tx csum

Add statistics counter for software tx checksumming.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 07ab8a5c1c46..7632d1208844 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -707,8 +707,11 @@ static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         }
 
         if ((large_send == QETH_LARGE_SEND_NO) &&
-            (skb->ip_summed == CHECKSUM_PARTIAL))
+            (skb->ip_summed == CHECKSUM_PARTIAL)) {
                 qeth_tx_csum(new_skb);
+                if (card->options.performance_stats)
+                        card->perf_stats.tx_csum++;
+        }
 
         if (card->info.type != QETH_CARD_TYPE_IQD)
                 rc = qeth_do_send_packet(card, queue, new_skb, hdr,