Re: [lwip-users] ip_input

[Pepe Prisas]

I have created sw_services in my project directory and copied 
$XILINX_EDK/sw/lib/lwip_v2_00_a  into this directory which contains all 
the files I need to modify.
But somehow the changes that I make in ip.c or in any file of this 
directory are not being captured.
After changes when executing LibGen I get the following message:

make: Nothing to be done for `test_program'.
Done.

This I assume means that Libgen doesn''t take any notice of the changes 
that are being made in these files.

Am I doing it correctly or am I missing something?

Thanks.


Sathya Thammanur escribió:

> Hi Adrian,
> In order to modify the lwIP source (ip.c) file, do the following :
> - Create "sw_services"  directory in your project area
> - Copy $XILINX_EDK/sw/lib/lwip_v2_00_a into the above area
> - Start modifying the sources in this area
>
> This will let LibGen take the lwip sources from this area and hence
> any change here would be reflected.
>
> Sathya
>
> On 5/10/05, Pepe Prisas <address@hidden> wrote:
>  
>
> > Hi there,
> >
> > I hope this is not a far too simple question for you since I'm a newbie
> > with lwIP and with FPGA programming. Any advice would be really appreciated.
> >
> > I'm actually working on a EDK network project for use on a Virtex-II Pro
> > FPGA using Micoblaze soft-core. This project intends to read every
> > incoming packet/frame on the network to be analyzed later on, something
> > like a sniffer. I'm using EDK 6.3 with the lwIP stack.
> >
> > I am able to initialize the lwIP TCP/IP stack correctly with the lwIP
> > initalization routines: sys_init(); mem_init(); memp_init();
> > pbuf_init(); netif_init(); tcp_init();
> > I can also activate the network interface correctly with netif_add and
> > netif_set_default.
> > I have been able to run other lwIP applications on my development card
> > like the application note "TCP/IP on Virtex-II Pro Devices Using lwIP"
> > that work 100% correctly.
> >
> > My idea was to modify the ip_input function included in ip.c.
> > This function is the one in charge of reading every incoming packet and
> > checking headers, packet length, etc.
> > But I think this is not the correct way to do it since any changes that
> > I make on this file do not seem to apply. I assume that once the lwIP
> > files and headers are generated with LibGen these can not be changed.
> >
> > Some TCP level functions are used to register callback functions which
> > can be included in the project code such as tcp_arg, tcp_bind,...The
> > callback functions then can be programmed in the project to work on a
> > TCP level, but my intention is to capture every packet, not only those
> > from a certain TCP connection
> >
> > Is there any way of registering callback functions on IP level? How can
> > I modify ip_input function so that the changes can apply on my project?
> > Any advice?
> >
> > Sorry if I haven't explained myself correctly but English isn't my first
> > language.
> >
> > Thanks in advance.
> >
> > Adrian
> >
> > _______________________________________________
> > lwip-users mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/lwip-users
> >
> >    
>
>
> _______________________________________________
> lwip-users mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/lwip-users
>
>