netdev - [PATCH net-next] net: add the ifindex for trace_net_dev_xmit

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Message-Id: <20251021091900.62978-1-tonghao@bamaicloud.com>
Date: Tue, 21 Oct 2025 17:19:00 +0800
From: Tonghao Zhang <tonghao@...aicloud.com>
To: netdev@...r.kernel.org
Cc: Tonghao Zhang <tonghao@...aicloud.com>,
	Eran Ben Elisha <eranbe@...lanox.com>,
	Jiri Pirko <jiri@...lanox.com>,
	Cong Wang <xiyou.wangcong@...il.com>
Subject: [PATCH net-next] net: add the ifindex for trace_net_dev_xmit_timeout

In a multi-network card or container environment, provide more accurate information.

268.148239: net_dev_xmit_timeout: dev=eth0 ifindex=6 driver=virtio_net queue=10
274.292271: net_dev_xmit_timeout: dev=eth0 ifindex=6 driver=virtio_net queue=10
277.876231: net_dev_xmit_timeout: dev=eth1 ifindex=7 driver=virtio_net queue=10
279.924230: net_dev_xmit_timeout: dev=eth2 ifindex=8 driver=virtio_net queue=10
279.924233: net_dev_xmit_timeout: dev=eth0 ifindex=6 driver=virtio_net queue=10
282.996224: net_dev_xmit_timeout: dev=eth1 ifindex=7 driver=virtio_net queue=10

Cc: Eran Ben Elisha <eranbe@...lanox.com>
Cc: Jiri Pirko <jiri@...lanox.com>
Cc: Cong Wang <xiyou.wangcong@...il.com>
Signed-off-by: Tonghao Zhang <tonghao@...aicloud.com>
---
 include/trace/events/net.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/trace/events/net.h b/include/trace/events/net.h
index d55162c12f90..49f9fce69dd7 100644
--- a/include/trace/events/net.h
+++ b/include/trace/events/net.h
@@ -107,16 +107,19 @@ TRACE_EVENT(net_dev_xmit_timeout,
 		__string(	name,		dev->name	)
 		__string(	driver,		netdev_drivername(dev))
 		__field(	int,		queue_index	)
+		__field(	int,		ifindex		)
 	),
 
 	TP_fast_assign(
 		__assign_str(name);
 		__assign_str(driver);
 		__entry->queue_index = queue_index;
+		__entry->ifindex = dev->ifindex;
 	),
 
-	TP_printk("dev=%s driver=%s queue=%d",
-		__get_str(name), __get_str(driver), __entry->queue_index)
+	TP_printk("dev=%s ifindex=%d driver=%s queue=%d",
+		__get_str(name), __entry->ifindex,
+		__get_str(driver), __entry->queue_index)
 );
 
 DECLARE_EVENT_CLASS(net_dev_template,
-- 
2.34.1