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net: add net cookie for net device trace events 

In a multi-network card or container environment, this is needed in order
to differentiate between trace events relating to net devices that exist
in different network namespaces and share the same name.

for xmit_timeout trace events:
[002] ..s1.  1838.311662: net_dev_xmit_timeout: dev=eth0 driver=virtio_net queue=10 net_cookie=3
[007] ..s1.  1839.335650: net_dev_xmit_timeout: dev=eth0 driver=virtio_net queue=10 net_cookie=4100
[007] ..s1.  1844.455659: net_dev_xmit_timeout: dev=eth0 driver=virtio_net queue=10 net_cookie=3
[002] ..s1.  1850.087647: net_dev_xmit_timeout: dev=eth0 driver=virtio_net queue=10 net_cookie=3

Cc: Eran Ben Elisha <eranbe@mellanox.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Suggested-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: Tonghao Zhang <tonghao@bamaicloud.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20251028043244.82288-1-tonghao@bamaicloud.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Tonghao Zhang 2025-10-28 12:32:44 +08:00 committed by Paolo Abeni
parent 9e8a443401
commit 27cb3de7f4
1 changed files with 27 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
include/trace/events/net.h
View File

@ -35,6 +35,7 @@ TRACE_EVENT(net_dev_start_xmit,
__field( u16, gso_size )
__field( u16, gso_segs )
__field( u16, gso_type )
__field( u64, net_cookie )
),
TP_fast_assign(
@ -57,16 +58,18 @@ TRACE_EVENT(net_dev_start_xmit,
__entry->gso_size = skb_shinfo(skb)->gso_size;
__entry->gso_segs = skb_shinfo(skb)->gso_segs;
__entry->gso_type = skb_shinfo(skb)->gso_type;
__entry->net_cookie = dev_net(dev)->net_cookie;
),
TP_printk("dev=%s queue_mapping=%u skbaddr=%p vlan_tagged=%d vlan_proto=0x%04x vlan_tci=0x%04x protocol=0x%04x ip_summed=%d len=%u data_len=%u network_offset=%d transport_offset_valid=%d transport_offset=%d tx_flags=%d gso_size=%d gso_segs=%d gso_type=%#x",
TP_printk("dev=%s queue_mapping=%u skbaddr=%p vlan_tagged=%d vlan_proto=0x%04x vlan_tci=0x%04x protocol=0x%04x ip_summed=%d len=%u data_len=%u network_offset=%d transport_offset_valid=%d transport_offset=%d tx_flags=%d gso_size=%d gso_segs=%d gso_type=%#x net_cookie=%llu",
__get_str(name), __entry->queue_mapping, __entry->skbaddr,
__entry->vlan_tagged, __entry->vlan_proto, __entry->vlan_tci,
__entry->protocol, __entry->ip_summed, __entry->len,
__entry->data_len,
__entry->network_offset, __entry->transport_offset_valid,
__entry->transport_offset, __entry->tx_flags,
__entry->gso_size, __entry->gso_segs, __entry->gso_type)
__entry->gso_size, __entry->gso_segs,
__entry->gso_type, __entry->net_cookie)
);
TRACE_EVENT(net_dev_xmit,
@ -83,17 +86,21 @@ TRACE_EVENT(net_dev_xmit,
__field( unsigned int, len )
__field( int, rc )
__string( name, dev->name )
__field( u64, net_cookie )
),
TP_fast_assign(
__entry->skbaddr = skb;
__entry->len = skb_len;
__entry->rc = rc;
__entry->net_cookie = dev_net(dev)->net_cookie;
__assign_str(name);
),
TP_printk("dev=%s skbaddr=%p len=%u rc=%d",
__get_str(name), __entry->skbaddr, __entry->len, __entry->rc)
TP_printk("dev=%s skbaddr=%p len=%u rc=%d net_cookie=%llu",
__get_str(name), __entry->skbaddr,
__entry->len, __entry->rc,
__entry->net_cookie)
);
TRACE_EVENT(net_dev_xmit_timeout,
@ -107,16 +114,19 @@ TRACE_EVENT(net_dev_xmit_timeout,
__string( name, dev->name )
__string( driver, netdev_drivername(dev))
__field( int, queue_index )
__field( u64, net_cookie )
),
TP_fast_assign(
__assign_str(name);
__assign_str(driver);
__entry->queue_index = queue_index;
__entry->net_cookie = dev_net(dev)->net_cookie;
),
TP_printk("dev=%s driver=%s queue=%d",
__get_str(name), __get_str(driver), __entry->queue_index)
TP_printk("dev=%s driver=%s queue=%d net_cookie=%llu",
__get_str(name), __get_str(driver),
__entry->queue_index, __entry->net_cookie)
);
DECLARE_EVENT_CLASS(net_dev_template,
@ -129,16 +139,20 @@ DECLARE_EVENT_CLASS(net_dev_template,
__field( void *, skbaddr )
__field( unsigned int, len )
__string( name, skb->dev->name )
__field( u64, net_cookie )
),
TP_fast_assign(
__entry->skbaddr = skb;
__entry->len = skb->len;
__entry->net_cookie = dev_net(skb->dev)->net_cookie;
__assign_str(name);
),
TP_printk("dev=%s skbaddr=%p len=%u",
__get_str(name), __entry->skbaddr, __entry->len)
TP_printk("dev=%s skbaddr=%p len=%u net_cookie=%llu",
__get_str(name), __entry->skbaddr,
__entry->len,
__entry->net_cookie)
)
DEFINE_EVENT(net_dev_template, net_dev_queue,
@ -188,6 +202,7 @@ DECLARE_EVENT_CLASS(net_dev_rx_verbose_template,
__field( unsigned char, nr_frags )
__field( u16, gso_size )
__field( u16, gso_type )
__field( u64, net_cookie )
),
TP_fast_assign(
@ -214,16 +229,18 @@ DECLARE_EVENT_CLASS(net_dev_rx_verbose_template,
__entry->nr_frags = skb_shinfo(skb)->nr_frags;
__entry->gso_size = skb_shinfo(skb)->gso_size;
__entry->gso_type = skb_shinfo(skb)->gso_type;
__entry->net_cookie = dev_net(skb->dev)->net_cookie;
),
TP_printk("dev=%s napi_id=%#x queue_mapping=%u skbaddr=%p vlan_tagged=%d vlan_proto=0x%04x vlan_tci=0x%04x protocol=0x%04x ip_summed=%d hash=0x%08x l4_hash=%d len=%u data_len=%u truesize=%u mac_header_valid=%d mac_header=%d nr_frags=%d gso_size=%d gso_type=%#x",
TP_printk("dev=%s napi_id=%#x queue_mapping=%u skbaddr=%p vlan_tagged=%d vlan_proto=0x%04x vlan_tci=0x%04x protocol=0x%04x ip_summed=%d hash=0x%08x l4_hash=%d len=%u data_len=%u truesize=%u mac_header_valid=%d mac_header=%d nr_frags=%d gso_size=%d gso_type=%#x net_cookie=%llu",
__get_str(name), __entry->napi_id, __entry->queue_mapping,
__entry->skbaddr, __entry->vlan_tagged, __entry->vlan_proto,
__entry->vlan_tci, __entry->protocol, __entry->ip_summed,
__entry->hash, __entry->l4_hash, __entry->len,
__entry->data_len, __entry->truesize,
__entry->mac_header_valid, __entry->mac_header,
__entry->nr_frags, __entry->gso_size, __entry->gso_type)
__entry->nr_frags, __entry->gso_size,
__entry->gso_type, __entry->net_cookie)
);
DEFINE_EVENT(net_dev_rx_verbose_template, napi_gro_frags_entry,