linux-kernel - [PATCH net v2 2/8] forcedeth: new ethtool stat "tx_timeout" to account for tx

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Message-Id: <b38a03bc1edbd129ae39b74ebb379d2354d8a45b.1320369398.git.david.decotigny@google.com>
Date:	Thu,  3 Nov 2011 18:41:17 -0700
From:	David Decotigny <david.decotigny@...gle.com>
To:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Ian Campbell <ian.campbell@...rix.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	Jiri Pirko <jpirko@...hat.com>, Joe Perches <joe@...ches.com>,
	Szymon Janc <szymon@...c.net.pl>,
	Sameer Nanda <snanda@...gle.com>,
	David Decotigny <david.decotigny@...gle.com>
Subject: [PATCH net v2 2/8] 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 <david.decotigny@...gle.com>
---
 drivers/net/ethernet/nvidia/forcedeth.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index 64b1c7c..c82a3c7 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -633,6 +633,7 @@ static const struct nv_ethtool_str nv_estats_str[] = {
 	{ "rx_packets" },
 	{ "rx_errors_total" },
 	{ "tx_errors_total" },
+	{ "tx_timeout" },
 
 	/* version 2 stats */
 	{ "tx_deferral" },
@@ -673,6 +674,7 @@ struct nv_ethtool_stats {
 	u64 rx_packets;
 	u64 rx_errors_total;
 	u64 tx_errors_total;
+	u64 tx_timeout;
 
 	/* version 2 stats */
 	u64 tx_deferral;
@@ -2534,6 +2536,8 @@ 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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