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| author | Willem de Bruijn <willemb@google.com> | 2014-08-04 22:11:48 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-08-05 16:35:54 -0700 |
| commit | e7fd2885385157d46c85f282fc6d7d297db43e1f (patch) | |
| tree | 14e9d00ed87b2b45882c8cb8dd1b9b4d221724f8 /include/uapi/linux/errqueue.h | |
| parent | 09c2d251b70723650ba47e83571ff49281320f7c (diff) | |
| download | linux-e7fd2885385157d46c85f282fc6d7d297db43e1f.tar.gz linux-e7fd2885385157d46c85f282fc6d7d297db43e1f.tar.bz2 linux-e7fd2885385157d46c85f282fc6d7d297db43e1f.zip | |
net-timestamp: SCHED timestamp on entering packet scheduler
Kernel transmit latency is often incurred in the packet scheduler.
Introduce a new timestamp on transmission just before entering the
scheduler. When data travels through multiple devices (bonding,
tunneling, ...) each device will export an individual timestamp.
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/errqueue.h')
| -rw-r--r-- | include/uapi/linux/errqueue.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/uapi/linux/errqueue.h b/include/uapi/linux/errqueue.h index accee72cae7c..17437cf297b7 100644 --- a/include/uapi/linux/errqueue.h +++ b/include/uapi/linux/errqueue.h @@ -39,6 +39,7 @@ struct scm_timestamping { */ enum { SCM_TSTAMP_SND, /* driver passed skb to NIC, or HW */ + SCM_TSTAMP_SCHED, /* data entered the packet scheduler */ }; #endif /* _UAPI_LINUX_ERRQUEUE_H */ |