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docs: proc.rst: add softnet_stat to /proc/net table

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/proc/net/softnet_stat exists for a long time, but proc.rst miss it.
Softnet_stat shows some statistics of struct softnet_data of online
CPUs. Struct softnet_data manages incoming and output packets
on per-CPU queues. Note that fastroute and cpu_collision in
softnet_stat are obsolete and their value is always 0.

Signed-off-by: Yang Yang <yang.yang29@zte.com.cn>
Reviewed-by: xu xin <xu.xin16@zte.com.cn>
Reviewed-by: Zhang Yunkai <zhang.yunkai@zte.com.cn>
Link: https://lore.kernel.org/r/202212091421536982085@zte.com.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Yang Yang 2022-12-09 14:21:53 +08:00 committed by Jonathan Corbet
parent 078bdea856
commit 8b0a211d31
1 changed files with 1 additions and 0 deletions
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Documentation/filesystems/proc.rst
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@ -1284,6 +1284,7 @@ support this. Table 1-9 lists the files and their meaning.
rt_cache Routing cache
snmp SNMP data
sockstat Socket statistics
softnet_stat Per-CPU incoming packets queues statistics of online CPUs
tcp TCP sockets
udp UDP sockets
unix UNIX domain sockets