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>

4 files changed, 11 insertions, 2 deletions

diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index e0c45574b0c..fd34f63dc23 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -134,6 +134,7 @@ struct qeth_perf_stats {
         unsigned int sg_skbs_rx;
         unsigned int sg_frags_rx;
         unsigned int sg_alloc_page_rx;
+        unsigned int tx_csum;
 };
 
 /* Routing stuff */
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index d1b5bebea7f..1a361b3bf62 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -4327,6 +4327,7 @@ static struct {
 /* 30 */{"tx count"},
         {"tx do_QDIO time"},
         {"tx do_QDIO count"},
+        {"tx csum"},
 };
 
 int qeth_core_get_stats_count(struct net_device *dev)
@@ -4378,6 +4379,7 @@ void qeth_core_get_ethtool_stats(struct net_device *dev,
         data[30] = card->perf_stats.outbound_cnt;
         data[31] = card->perf_stats.outbound_do_qdio_time;
         data[32] = card->perf_stats.outbound_do_qdio_cnt;
+        data[33] = card->perf_stats.tx_csum;
 }
 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
 
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 07ab8a5c1c4..7632d120884 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,
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 0dcc036d34a..fea50bdc8f4 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2711,8 +2711,11 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
         }
 
         if ((large_send == QETH_LARGE_SEND_NO) &&
-            (new_skb->ip_summed == CHECKSUM_PARTIAL))
+            (new_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,