netdev - [PATCH] forcedeth: new ethtool stat "tx_timeout" to account for tx

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Message-Id: <1305752945-14843-2-git-send-email-decot@google.com>
Date:	Wed, 18 May 2011 14:09:05 -0700
From:	David Decotigny <decot@...gle.com>
To:	"David S. Miller" <davem@...emloft.net>,
	Joe Perches <joe@...ches.com>,
	Szymon Janc <szymon@...c.net.pl>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	kernel-net-upstream@...gle.com, Sameer Nanda <snanda@...gle.com>,
	David Decotigny <decot@...gle.com>
Subject: [PATCH] forcedeth: new ethtool stat "tx_timeout" to account for tx_timeouts

From: Sameer Nanda <snanda@...gle.com>

This change publishes a new ethtool stats: tx_timeout that counts the
number of times the tx_timeout callback was triggered.


Signed-off-by: David Decotigny <decot@...gle.com>
---
 drivers/net/forcedeth.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 895471d..112dc0b 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -632,6 +632,7 @@ static const struct nv_ethtool_str nv_estats_str[] = {
 	{ "rx_packets" },
 	{ "rx_errors_total" },
 	{ "tx_errors_total" },
+	{ "tx_timeout" },
 
 	/* version 2 stats */
 	{ "tx_deferral" },
@@ -672,6 +673,7 @@ struct nv_ethtool_stats {
 	u64 rx_packets;
 	u64 rx_errors_total;
 	u64 tx_errors_total;
+	u64 tx_timeout;
 
 	/* version 2 stats */
 	u64 tx_deferral;
@@ -2526,6 +2528,8 @@ static void nv_tx_timeout(struct net_device *dev)
 
 	spin_lock_irq(&np->lock);
 
+	np->estats.tx_timeout++;
+
 	/* 1) stop tx engine */
 	nv_stop_tx(dev);
 
-- 
1.7.3.1

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