masayuki2009 commented on PR #7830:
URL: https://github.com/apache/nuttx/pull/7830#issuecomment-1345697873
>@masayuki2009 san, please try the latest update, I changed the update
strategy for RX index, which can fix the UDP issue, and also I did the related
test of iperf UDP/TCP, it seems that everything works as expected
@anchao
`qemu-armv8a:netnsh` seems OK but `qemu-armv8a:netnsh_smp` has a problem.
```
+ /home/ishikawa/opensource/QEMU/qemu-7.1/build/qemu-system-aarch64 -cpu
cortex-a53 -smp 4 -nographic -machine virt,virtualization=on,gic-version=3
-chardev stdio,id=con,mux=on -serial chardev:con -global
virtio-mmio.force-legacy=false -netdev
user,id=u1,hostfwd=tcp:127.0.0.1:10023-10.0.2.15:23,hostfwd=tcp:127.0.0.1:15001-10.0.2.15:5001
-device virtio-net-device,netdev=u1,bus=virtio-mmio-bus.0 -mon
chardev=con,mode=readline -kernel ./nuttx
telnetd [7:100]
NuttShell (NSH) NuttX-10.4.0
nsh> uname -a
NuttX 10.4.0 a13c876080 Dec 12 2022 09:02:59 arm64 qemu-armv8a
nsh> ps
PID GROUP CPU PRI POLICY TYPE NPX STATE EVENT SIGMASK STACK
USED FILLED COMMAND
0 0 0 0 FIFO Kthread N-- Assigned 00000000 008144
001040 12.7% CPU0 IDLE
1 1 1 0 FIFO Kthread N-- Running 00000000 008144
000320 3.9% CPU1 IDLE
2 2 2 0 FIFO Kthread N-- Running 00000000 008144
000320 3.9% CPU2 IDLE
3 3 3 0 FIFO Kthread N-- Running 00000000 008144
000080 0.9% CPU3 IDLE
4 4 --- 192 RR Kthread --- Waiting Semaphore 00000000 008096
000496 6.1% hpwork 0x402d55d0
5 5 --- 100 RR Kthread --- Waiting Semaphore 00000000 008096
000528 6.5% lpwork 0x402d5600
6 6 0 100 RR Task --- Running 00000000 008112
002480 30.5% nsh_main
7 7 --- 100 RR Task --- Waiting Semaphore 00000010 008112
001216 14.9% telnetd
nsh> iperf -s -i 1 -t 5
IP: 10.0.2.15
mode=tcp-server sip=10.0.2.15:5001,dip=0.0.0.0:5001, interval=1, time=5
accept: 10.0.2.2,53800
Interval Transfer Bandwidth
0.00- 1.01 sec 36500 Bytes inf Mbits/sec
1.01- 2.02 sec 59860 Bytes inf Mbits/sec
2.02- 3.03 sec 59860 Bytes nan Mbits/sec
3.03- 4.04 sec 59860 Bytes nan Mbits/sec
4.04- 5.05 sec 109729 Bytes inf Mbits/sec
0.00- 5.05 sec 109729 Bytes 0.17 Mbits/sec
iperf exit
```
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