zhhyu7 opened a new pull request, #17526:
URL: https://github.com/apache/nuttx/pull/17526
## Summary
Modify txavail to be sent directly in the current thread, and synchronously
modify the logic in the original process that needs to be adapted together.
## Impact
The transmission process of netdev_upperhalf, can reduce one thread context
switch and one net_lock/unlock operation, thus reduce computational consumption
during a single transmission process and improve real-time performance.
## Testing
sim:matter with ping and iperf
```
NuttShell (NSH) NuttX-12.11.0
MOTD: username=admin password=Administrator
nsh>
nsh> ifconfig eth0 10.0.1.2/24
nsh> ping -c 3 10.0.1.1
PING 10.0.1.1 56 bytes of data
56 bytes from 10.0.1.1: icmp_seq=0 time=0.0 ms
56 bytes from 10.0.1.1: icmp_seq=1 time=0.0 ms
56 bytes from 10.0.1.1: icmp_seq=2 time=0.0 ms
3 packets transmitted, 3 received, 0% packet loss, time 3030 ms
rtt min/avg/max/mdev = 0.000/0.000/0.000/0.000 ms
nsh>
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- 12.54 sec 817315840 Bytes 521.41 Mbits/sec
12.54- 18.74 sec 404733952 Bytes 522.24 Mbits/sec
18.74- 30.84 sec 792920064 Bytes 524.24 Mbits/sec
0.00- 30.84 sec 2092908544 Bytes 542.91 Mbits/sec
iperf exit
nsh>
```
And Infineon board with can feature.
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