anchao opened a new pull request, #7004:
URL: https://github.com/apache/incubator-nuttx/pull/7004
## Summary
net/procfs: add tcp profs support (IPv4 only)
nuttx style:
```
server> cat /proc/net/tcp
TCP sl local_address remote_address st flg tmr uack rt
rxq
1: 0.0.0.0: 4214 192.168.31.22: 5001 04 61 12 0 0
1024
2: 0.0.0.0: 4213 192.168.31.22: 5001 04 61 12 0 0
1024
3: 0.0.0.0: 4215 192.168.31.22: 5001 04 61 12 0 0
1024
4: 0.0.0.0: 4216 192.168.31.22: 5001 04 61 12 0 0
1024
5: 0.0.0.0: 4217 192.168.31.22: 5001 04 61 12 0 0
980
server> ifconfig
TCP sl local_address remote_address st flg tmr uack rt
rxq
1: 0.0.0.0: 4214 192.168.31.22: 5001 04 61 12 0 0
1024
2: 0.0.0.0: 4213 192.168.31.22: 5001 04 61 12 0 0
1024
3: 0.0.0.0: 4215 192.168.31.22: 5001 04 61 12 0 0
1024
4: 0.0.0.0: 4216 192.168.31.22: 5001 04 61 12 0 0
1024
5: 0.0.0.0: 4217 192.168.31.22: 5001 04 61 12 0 0
980
eth0 Link encap:Ethernet HWaddr 42:44:02:ee:4b:58 at RUNNING
inet addr:192.168.31.209 DRaddr:192.168.31.1 Mask:255.255.255.0
RX: Received Fragment Errors
0000008e 00000000 00000000
IPv4 ARP Dropped
0000003f 00000040 0000000f
TX: Queued Sent Errors Timeouts
0000003f 0000003f 00000000 00000000
Total Errors: 00000000
```
linux kernel:
https://www.kernel.org/doc/Documentation/networking/proc_net_tcp.txt
## Impact
N/A
## Testing
IPv4 tcp procfs
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