netpkt: Add parameters to support specific network cards

[zs39]

Summary

Supports sending and receiving data packets on specified interfaces.

Impact

Scenarios using netpkt examples

Testing

Use the command netpkt -i eth0 -t -v to check if it executes correctly.
The execution result is normal, as shown below.

nsh> netpkt -i eth0 -t -v
Testing write() (3 times)
transmitted 128 octets
F0 DE F1 02 43 01 00 E0  DE AD BE EF 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
transmitted 128 octets
F0 DE F1 02 43 01 00 E0  DE AD BE EF 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
transmitted 128 octets
F0 DE F1 02 43 01 00 E0  DE AD BE EF 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00

[simbit18]

@zs39
Can you please provide simple update to documentation too ?
https://nuttx.apache.org/docs/latest/applications/examples/netpkt/index.html

[acassis]

@zs39 very nice! Please create a basic (initial) Documentation to netpkt, there is only an entry to it without anything useful: https://nuttx.apache.org/docs/latest/applications/examples/netpkt/index.html

[zs39]

@zs39 very nice! Please create a basic (initial) Documentation to netpkt, there is only an entry to it without anything useful: https://nuttx.apache.org/docs/latest/applications/examples/netpkt/index.html

@acassis https://github.com/apache/nuttx/pull/17655/files
The document has been added here.

documentation already provided