Re: [lwip-users] [Re]: Error, installing rtl_lwip_tools.o in RTLinux

[Sergio PérezAlcañiz]

Mensaje citado por: ByungGi Baek <address@hidden>:

> Thank you for your quick response.
> The problem is due to CONFIG_BIGPHYSAREA definition of DIDMA.h.
> I changed CONFIG_BIGPHYSAREA to CONFIG_BIGPHYS_AREA along to .config in
> linux tree.
> And I used RTLinux3.1 and linux-2.4.18 with rtlinux-3.1 patch.
> 
> One more question about the examples.
> Can I communicate rt domain task(tcpclient.o) to linux user mode
> task(tcpServer) without 3C90x card ?
> I don't have 3C90x ethernet card. when I tried tcpclient and tcpServer
> from examples, It's stop at connect func.
> Thank you.
> 
> ByungGi Baek.
> 
>  

By now, the only RT-Linux NIC driver that I've implemented is the 3Com905C-X
driver, so to achieve interconnectiviy between two remote machines, only that
driver can be used. There's a way to test what you say, i.e. communicating
rt-tasks with Linux processes and is using the rtfifo driver. I didn't include
(I think) it in the RTL-lwIP 0.1 distribution because it is hard to understand
the way it works. The RTFIFO driver lets to communicate Linux lwIP TCP/IP stack
with RT-Linux RTL-lwIP stack as if Linux and RT-Linux would be two different
TCP/IP systems. That lets building a tcpclient in RT-Linux (RT-task) and a
tcpServer in Linux (Linux process) and comunnicate them. 
If you want I can explain you how it works and send to you the files. Maybe in
the RTL-lwIP 0.3 distribution would be fully included and documented. The 0.2
version is about to be in the RTL-lwIP web site. I ported the last version of
lwIP (stable version) and the ares (asynchronous DNS resolver) porting to lwIP.
I also modified the 3Com905C-X driver to be more flexible (It will be possible
to define the policy applied to the incoming packets). 

Regards.
Sergio.

RTL-lwIP project web site:

http://canals.disca.upv.es/~serpeal/RTL-lwIP/htmlFiles/index.html