zhhyu7 opened a new pull request, #18011:
URL: https://github.com/apache/nuttx/pull/18011
## Summary
The main content of this submission is to limit both the TX/RX buffers of
TCP/UDP to throttled IOBs, avoiding impacts on the sending and receiving of
control-type messages.
## Impact
- **TCP**: `tcp_wrbuffer.c`, `tcp_recvfrom.c`, `tcp_send_buffered.c`
- **UDP**: `udp_wrbuffer.c`
- **ICMP/ICMPv6**: `icmp_input.c`, `icmpv6_input.c`
- **Packet**: `pkt_input.c`, `pkt_sendmsg_buffered.c`
## Testing
sim:matter with very small amount of IOB configuration
```
CONFIG_MM_IOB=y
CONFIG_IOB_NBUFFERS=40
CONFIG_IOB_BUFSIZE=196
CONFIG_IOB_ALIGNMENT=4
CONFIG_IOB_SECTION=""
CONFIG_IOB_NCHAINS=40
CONFIG_IOB_THROTTLE=10
```
NuttX test log:
```
NuttShell (NSH) NuttX-12.12.0
MOTD: username=admin password=Administrator
nsh> iperf -c 10.0.1.1
IP: 10.0.1.2
mode=tcp-client sip=10.0.1.2:5001,dip=10.0.1.1:5001, interval=3, time=30
Interval Transfer Bandwidth
0.00- 3.01 sec 167133184 Bytes 444.21 Mbits/sec
3.01- 6.02 sec 160907264 Bytes 427.66 Mbits/sec
6.02- 9.03 sec 167264256 Bytes 444.56 Mbits/sec
9.03- 12.04 sec 159039488 Bytes 422.70 Mbits/sec
12.04- 15.05 sec 165265408 Bytes 439.24 Mbits/sec
15.05- 18.06 sec 162758656 Bytes 432.58 Mbits/sec
18.06- 21.07 sec 166150144 Bytes 441.60 Mbits/sec
21.07- 24.08 sec 168116224 Bytes 446.82 Mbits/sec
24.08- 27.09 sec 163971072 Bytes 435.80 Mbits/sec
27.09- 30.10 sec 168886272 Bytes 448.87 Mbits/sec
0.00- 30.10 sec 1649491968 Bytes 438.40 Mbits/sec
iperf exit
nsh>
nsh> iperf -s
IP: 10.0.1.2
mode=tcp-server sip=10.0.1.2:5001,dip=0.0.0.0:5001, interval=3, time=0
accept: 10.0.1.1:37436
Interval Transfer Bandwidth
0.00- 3.01 sec 212808200 Bytes 565.60 Mbits/sec
3.01- 6.02 sec 206625040 Bytes 549.17 Mbits/sec
6.02- 9.03 sec 204516800 Bytes 543.57 Mbits/sec
closed by the peer: 10.0.1.1:37436
iperf exit
nsh>
nsh> iperf -c 10.0.1.1 -u
IP: 10.0.1.2
mode=udp-client sip=10.0.1.2:5001,dip=10.0.1.1:5001, interval=3, time=30
Interval Transfer Bandwidth
0.00- 3.01 sec 248220416 Bytes 659.72 Mbits/sec
3.01- 6.02 sec 252431808 Bytes 670.92 Mbits/sec
6.02- 9.03 sec 251402880 Bytes 668.18 Mbits/sec
9.03- 12.04 sec 248893120 Bytes 661.51 Mbits/sec
12.04- 15.05 sec 248382336 Bytes 660.15 Mbits/sec
15.05- 18.06 sec 252202176 Bytes 670.30 Mbits/sec
18.06- 21.07 sec 247859776 Bytes 658.76 Mbits/sec
21.07- 24.08 sec 252090304 Bytes 670.01 Mbits/sec
24.08- 27.09 sec 252523072 Bytes 671.16 Mbits/sec
27.09- 30.10 sec 251651648 Bytes 668.84 Mbits/sec
0.00- 30.10 sec 2505657536 Bytes 665.96 Mbits/sec
iperf exit
nsh>
```
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