wengzhe opened a new pull request, #7334:
URL: https://github.com/apache/incubator-nuttx/pull/7334
## Summary
- arch/sim: calling txdone callback after devif_loopback in netdriver
- When devif_loopback handles a packet (like a ping targeting at this
dev), it does not call the txdone callback, breaking the tx pipeline and may
left some packets unhandled, delayed until next transmit on the network
interface.
- arch/sim: change g_avail_work and g_recv_work to array in netdriver
- Share one worker between multiple simulated network devices may work
most of the time, but sometimes breaks the tx pipeline when sending packets on
more than one interface at the same time, and leaves some packets unprocessed
in network stack, delayed until next transmit on the network interface. The rx
process is likely delayed in packet processing under similar situation, so keep
g_avail_work and g_recv_work the same number as interfaces.
```
dev0 tx1 avail tx1 done
v v
shared_work dev0 tx1 -> dev0 tx1 -> empty -> dev1 tx2 -> dev1 tx3 -> empty
^ ^ ^ ^
dev1 tx2 avail (failed to queue) tx3 avail tx2 done tx3 done
```
## Impact
Netdriver in sim.
## Testing
Tested on Ubuntu 22.04 x86_64
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