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apache / nuttx-apps

Apache NuttX Apps is a collection of tools, shells, network utilities, libraries, interpreters and can be used with the NuttX RTOS
https://nuttx.apache.org/
Apache License 2.0
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apps/system: Add `conntrack` command #2356

Closed wengzhe closed 2 months ago

wengzhe commented 3 months ago

Summary

A simple tool like Linux's conntrack command, only supports printing NAT connections now.

nuttx> conntrack -E
    [NEW] icmp  src=192.168.21.66 dst=1.2.3.4 type=8 code=0 id=26739 src=1.2.3.4 dst=192.168.11.1 type=0 code=0 id=26739
    [NEW] tcp   src=192.168.21.66 dst=1.2.3.4 sport=38446 dport=80 src=1.2.3.4 dst=192.168.11.1 sport=80 dport=38446
[DESTROY] icmp  src=192.168.21.66 dst=1.2.3.4 type=8 code=0 id=26739 src=1.2.3.4 dst=192.168.11.1 type=0 code=0 id=26739
nuttx> conntrack -L
tcp   src=192.168.21.66 dst=1.2.3.4 sport=38446 dport=80 src=1.2.3.4 dst=192.168.11.1 sport=80 dport=38446
icmp  src=192.168.21.66 dst=1.2.3.4 type=8 code=0 id=26739 src=1.2.3.4 dst=192.168.11.1 type=0 code=0 id=26739
conntrack: 2 flow entries have been shown.

Impact

Our own implementation behaves like Linux's conntrack command

Testing

Together with https://github.com/apache/nuttx/pull/12156