[patch 2/6] [PATCH] qeth: add statistics for tx csum

frank.blaschka
2009-03-25T06:57:15Z

[-- Attachment #1: 606-qeth-tx_csum-statistics.diff --]
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From: Frank Blaschka <frank.blaschka@de.ibm.com>

Add statistics counter for software tx checksumming.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
---

drivers/s390/net/qeth_core.h | 1 +
drivers/s390/net/qeth_core_main.c | 2 ++
drivers/s390/net/qeth_l2_main.c | 5 ++++-
drivers/s390/net/qeth_l3_main.c | 5 ++++-
4 files changed, 11 insertions(+), 2 deletions(-)

diff -urpN linux-2.6/drivers/s390/net/qeth_core.h linux-2.6-patched/drivers/s390/net/qeth_core.h
--- linux-2.6/drivers/s390/net/qeth_core.h 2009-02-18 12:06:14.000000000 +0100
+++ linux-2.6-patched/drivers/s390/net/qeth_core.h 2009-02-18 12:06:31.000000000 +0100
@@ -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 -urpN linux-2.6/drivers/s390/net/qeth_core_main.c linux-2.6-patched/drivers/s390/net/qeth_core_main.c
--- linux-2.6/drivers/s390/net/qeth_core_main.c 2009-02-18 12:06:14.000000000 +0100
+++ linux-2.6-patched/drivers/s390/net/qeth_core_main.c 2009-02-18 12:06:31.000000000 +0100
@@ -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
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 -urpN linux-2.6/drivers/s390/net/qeth_l2_main.c linux-2.6-patched/drivers/s390/net/qeth_l2_main.c
--- linux-2.6/drivers/s390/net/qeth_l2_main.c 2009-02-18 12:06:14.000000000 +0100
+++ linux-2.6-patched/drivers/s390/net/qeth_l2_main.c 2009-02-18 12:06:31.000000000 +0100
@@ -707,8 +707,11 @@ static int qeth_l2_hard_start_xmit(struc
}

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 -urpN linux-2.6/drivers/s390/net/qeth_l3_main.c linux-2.6-patched/drivers/s390/net/qeth_l3_main.c
--- linux-2.6/drivers/s390/net/qeth_l3_main.c 2009-02-18 12:06:31.000000000 +0100
+++ linux-2.6-patched/drivers/s390/net/qeth_l3_main.c 2009-02-18 12:06:31.000000000 +0100
@@ -2711,8 +2711,11 @@ static int qeth_l3_hard_start_xmit(struc
}

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,