netdev - [PATCH iwl-next v1] igbvf: add tx_timeout

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Message-ID: <20250612161630.67851-2-enjuk@amazon.com>
Date: Fri, 13 Jun 2025 01:16:26 +0900
From: Kohei Enju <enjuk@...zon.com>
To: Tony Nguyen <anthony.l.nguyen@...el.com>, Przemek Kitszel
	<przemyslaw.kitszel@...el.com>
CC: <intel-wired-lan@...ts.osuosl.org>, <netdev@...r.kernel.org>, Andrew Lunn
	<andrew+netdev@...n.ch>, "David S . Miller" <davem@...emloft.net>, "Eric
 Dumazet" <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni
	<pabeni@...hat.com>, Kohei Enju <kohei.enju@...il.com>, Kohei Enju
	<enjuk@...zon.com>
Subject: [PATCH iwl-next v1] igbvf: add tx_timeout_count to ethtool statistics

Add `tx_timeout_count` to ethtool statistics to provide visibility into
transmit timeout events, bringing igbvf in line with other Intel
ethernet drivers.

Currently `tx_timeout_count` is incremented in igbvf_watchdog_task() and
igbvf_tx_timeout() but is not exposed to userspace nor used elsewhere in
the driver.

Before:
  # ethtool -S ens5 | grep tx
       tx_packets: 43
       tx_bytes: 4408
       tx_restart_queue: 0

After:
  # ethtool -S ens5 | grep tx
       tx_packets: 41
       tx_bytes: 4241
       tx_restart_queue: 0
       tx_timeout_count: 0

Tested-by: Kohei Enju <enjuk@...zon.com>
Signed-off-by: Kohei Enju <enjuk@...zon.com>
---
 drivers/net/ethernet/intel/igbvf/ethtool.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/intel/igbvf/ethtool.c b/drivers/net/ethernet/intel/igbvf/ethtool.c
index 83b97989a6bd..773895c663fd 100644
--- a/drivers/net/ethernet/intel/igbvf/ethtool.c
+++ b/drivers/net/ethernet/intel/igbvf/ethtool.c
@@ -33,6 +33,7 @@ static const struct igbvf_stats igbvf_gstrings_stats[] = {
 	{ "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
 	{ "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
 	{ "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
+	{ "tx_timeout_count", IGBVF_STAT(tx_timeout_count, zero_base) },
 	{ "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
 	{ "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
 	{ "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
-- 
2.49.0